Effect Of Variable Viscosity Research Articles

Effects of Variable Viscosity in Unsteady Magnetohydrodynamic Hybrid Nanofluid Flow over Stretching/Shrinking Cylinder with Partial Slip and Stefan Blowing

In the manufacturing sector, transport phenomena near the stagnation region are frequent, particularly in the polymer and extrusion processes, which require continuous improvement to raise the process’s quality standards. The aim of this study is to explore the improvement of heat and mass transmission using unsteady magnetohydrodynamic (MHD) hybrid nanofluid (HNF) flow over a stretching/shrinking cylinder with variable viscosity and Stefan blowing. The governed equations of heat and mass transfer processes are converted into ordinary differential equations (ODEs) using the appropriate transformations, and the resulting equations are then solved using the MATLAB package bvp4c. With an upsurge in the volume fraction of nanoparticles, the skin friction increases, but the reverse trend is detected with negative values for the unsteadiness constraint. The use of 2D graphs to show how important parameters affect the velocity, temperature, and concentration is thoroughly discussed. There is a discussion of the quantitative findings from the wall shear factor and the heat and mass transfer rates calculated for the stretching/shrinking cases.

Effect of variable viscosity, porous walls and mixed thermal boundary condition on the onset of Rayleigh-Bénard convective instability

In this paper, we have studied the criteria for the onset of instability in the Rayleigh-Bénard convection problem, by considering a fluid layer confined between two infinitely extended rough boundaries, which are subjected to mixed-type thermal boundary conditions, physically representing the imperfectly conducting boundaries. The rough boundaries are assumed to be shallow porous layers with different pore size, properties, and permeabilities. Mathematically, it is given by the Saffman type boundary condition. Therefore, we have two generalized forms of boundary conditions, one for the flow field and the other for the thermal field. The two limiting cases of the mixed-type thermal boundary condition correspond to a perfectly conducting boundary and to a perfectly insulating boundary, whereas the two limiting cases of the hydrodynamic boundary condition correspond to a no-slip condition and to a free-surface condition, depending upon the limiting values of the parameters involved in these two generalized boundary conditions. The linear and nonlinear energy stability analyses are performed, and the existence of the region of subcritical instability is checked. Through the principle of exchange of stability analysis, it is found that the instability occurs only in the stationary mode. The adiabatic boundary condition is found to be more restrictive than the isothermal boundary condition. Under given conditions, the instability is observed to be occurring in the infinite wavelength mode for the case of adiabatic boundaries. In the present work, the effect of temperature and pressure dependent viscosity on the stability of the system has been shown and found to be of destabilizing nature. However, the roughness of the boundaries is found to be of stabilizing nature.

Viscoelastic third-order nanofluid MHD flow for wire coating purpose inside canonical coating die with variable viscosity effect: numerical and analytical solutions

The polyethene coating is frequently functionalized to cables or pipes for corrosion prevention, voltage differential, mechanical characteristics, and environmental legislation. The metal coating technique, in particular, is important in a variety of commercial applications. Coaxial extrusion, immersion, and electromagnetic application are examples of wire surface treatments. The wire coating procedure necessitates an increase in thermal performance. As a result, this research aims to determine how floating nanoparticles affect the mass and heat transport mechanisms of non-Newtonian fluid in the posttreatment for cable coating processes. For nanofluids, the Buongiorno model is used, including variable viscosity. The original mathematical formulation in terms of nonlinear ODEs for bvph2 is altered to first-order ODEs using similarity transformation. The data collection for the projected bvph2 is developed for variables related to the proposed model manipulating the velocity consuming the explicit bvph2 technique. The exercise, confirmation, and analysis processes of the ND-solve method are utilized to appraise the attained results of bvhp2 for numerous cases, and an assessment of the achieved consequences is executed with available statistics set to pattern the correctness and efficiency of the suggested algorithm for the scrutiny of non-Newtonian fluid problem connected bvph2. The prevailing uniformity of recommended conclusions with published findings designates the legitimacy of the structure, and the accurateness of 10−6 is also accomplished. The analytical findings of this investigation revealed that within the Reynolds modeling, the stress on the whole wire surface combined with shear forces at the surface predominates Vogel’s model. The contribution of nanomaterials upon force on the entire surface of wire and shear forces at the surface appears positive. A non-Newtonian feature can increase the capping substance’s velocity. This research could aid in the advancement of wire coating technologies. For the first instance, the significance of nanotechnology during wire coating evaluation is explored by utilizing Brownian motion with generation/absorption slip processes. For time-dependent viscosity, two alternative models are useful.

MHD rotating flow over a stretching surface: The role of viscosity and aggregation of nanoparticles

The magnetohydrodynamic (MHD) rotating flow that occurs across a stretching surface has numerous practical applications in a variety of domains. These fields include astronomy, engineering, the material sciences, and space exploration. The combined examination of magnetohydrodynamics rotating flow across a stretching surface, taking into consideration fluctuating viscosity and nanoparticle aggregation, has significant ramifications across several different domains. It is essential for both the growth of technology and the attainment of deeper insights into the complicated fluid dynamics to maintain research in this field. Given the aforementioned motivation, the principal aim of this study is to examine the effects of variable viscosity on the bidirectional rotating magnetohydrodynamic flow over a stretching surface. Aggregation effects on nanoparticles are used in the analysis. Titania (TiO2) is taken nanoparticle and ethylene glycol as base fluid. The nonlinear ordinary differential equations and the boundary conditions that correspond to them can be transformed into a dimensionless form by using a technique called similarity transformation. To get a numerical solution to the transformed equation, the Runge-Kutta 4th order (RK-4) method is utilized, and this is done in conjunction with the shooting method. The impact of various leading variables on dimensionless velocity, the coefficients of temperature, skin friction and local Nusselt number are graphically represented. Velocity profiles in both direction increases with increasing values of φ. The Nusselt number increases with increasing values of the radiation and temperature ratio parameters. When a 1 % volume fraction of nanoparticles is introduced, the Nusselt number exhibits a 0.174 % increase for the aggregation model compared to the regular fluid in the absence of radiation effects. When the aggregation model is used with a 1 % volume fraction of nanoparticles, the skin friction increases by 0.1153 % in the x direction and by 0.1165 % in the y direction compared to the regular fluid. Tables show the variation in Nusselt numbers, as well as a comparison of the effects of nanoparticle's aggregation model without and with radiation. Moreover, the numerical results obtained were compared with previously published data, demonstrating a satisfactory agreement. We firmly believe that this finding will have extensive implications for engineering and various industries.

Forced convective flows of Casson hybrid nanofluid and entropy production over diverging channel with variable thermophysical properties

The heat transfer occurring on boundary layer flows during dilute suspension of Cu–Al2O3 nanoparticles-based non-Newtonian Casson hybrid nanofluid over diverging channel is to be characterized in this model. The governing equations comprise continuity, momentum, energy and concentration equations which incorporated variable viscosity and magnetic effects in the momentum equation, variable thermal conductivity, chemical reaction, thermal radiative heat flux, uniform magnetic field, Joule heating and viscous dissipative effects in the energy equation and Brownian motion and thermophoretic effects in the concentration equation. The modeled equations are nondimensionalized using nonsimilar variables and linearized using quasilinearization technique. The system of linearized partial differential equations is solved numerically using implicit finite difference and successively iterated with the help of Varga’s algorithm. The physical impacts of viscous dissipation parameter (Ec), Brownian motion ([Formula: see text]) on velocity, temperature, concentration and Schmidt number (Sc) influences on skin friction, Nusselt number, Sherwood number profiles, Bejan lines and total entropy production profiles are simulated graphically. The velocity profiles are enhanced and the temperature profile declines for augmented values of Eckert number. Moreover, for augmented values of Schmidt number the heat and mass transfer rates are enhanced and the Bejan lines dropped a decreasing trend whereas total entropy production is augmented near the wall region. The improved values of the Schmidt number physically increased Sc in the heat transfer rate. The ascending profile of the mass transfer rate with increased values of the viscous dissipation parameter Ec demonstrated that the graph is raised for larger values of the viscous dissipating parameter (Ec). The physical behavior of incremental mass transfer rate led to the conclusion that the relative diffusivity of nanoparticles is characterized by both nondimensional numbers Ec and Sc which are directly proportional to the viscous forces.

Computational Study of MHD Nanofluid Flow with Effects of Variable Viscosity and Non-uniform Heat Generation

Computational Study of MHD Nanofluid Flow with Effects of Variable Viscosity and Non-uniform Heat Generation

Modelling and Experimental Validation of the Flow and Mixing Processes in a Microfluidic Membraneless X-Cell with Flowing Vanadium Electrolytes

Microfluidic devices are characterized by submillimeter channel cross-sections and tiny flow rates, typically below 100 µL/min. This results in rather small Reynolds numbers that maintain the flow laminar and steady, preventing chaotic mixing from turbulence [1-4]. This orderly flow can be used to remove the ionomeric membrane in redox flow batteries, generating membraneless microfluidic cells with low internal electric resistance. These devices could be manufactured at a lower cost than their macro counterparts. However, without a membrane, the mixing region where the electrolytes come into contact must be accurately controlled to avoid unwanted interface deflections leading to increased cross-contamination of liquid and species.In this work, we compare experimental and CFD realizations of the flow in a membraneless microfluidic flow channel [5], including in the simulations the effect of viscosity variations across the positive and negative vanadium electrolytes. The apparatus includes a microfluidic control system that uses piezoelectric pumps and valves for flow regulation, an X-cell as flow channel, and small tanks with discharged positive (VIV) and negative (VIII) electrolytes. We use a UV/Visible spectrometer to measure the amount of mixing at the outlet of the cell [6]. This allows us to validate the CFD model against the experimentally measured cross-contamination and liquid transfer. To our knowledge, these results are unique in using spectrometry data to quantify the mixing ratio of VIII/VIV, and provide valuable data to validate CFD models that could later be used to engineer the flow in membraneless microfluidic vanadium redox flow batteries. Acknowledgments This work has been partially funded by FEDER/Ministerio de Ciencia, Innovación y Universidades – Agencia Estatal de Investigación Projects PID2019-106740RB-I00 and RTC-2017-5955-3/AEI/10.13039/501100011033, and by Grant IND2019/AMB-17273 of the Comunidad de Madrid.

The stability of the nanofluid flow in an inclined porous channel with variable viscosity

The effect of variable viscosity on the stability of nanofluid flow in an inclined porous channel is investigated. The nanofluid model considers the consideration of thermophoresis and Brownian motion. In addition, the Brinkman model has been employed in the momentum equation. The eigenvalue problem for the perturbed state is obtained using normal mode analysis, and the spectral method is used to solve it. The influence of numerous parameters on the critical Rayleigh number and associated wavenumber are graphically displayed. It is noticed that the increasing impact of the Darcy number, Prandtl number, and porosity parameter increases the system’s stability, whereas the variable viscosity parameter and the channel’s inclination destabilize the flow. Also, the dynamics of the flow field, behavior of temperature, and volume fraction are presented through streamlines, isotherms, and isonanoconcentration at the critical level.

Unsteady Magnetohydrodynamics (MHD) mixed convection flow over a cone with the effect of chemical reaction and viscous dissipation

This paper investigates the Magnetohydrodynamics (MHD) convective flow over a cone with the influence of viscous dissipation, variable viscosity, chemical reaction and variable thermal conductivity effects. Related equations are tackled by the Homotopy analysis method (HAM). The impacts of physical variables on concentration, velocity and temperature are presented through numerical tables and graphs. It is noticed that the heat transfer rate (Nusselt number) increases against Prandtl number. Similarly, the mass transfer rate (Sherwood number) increases against Schmidt number. Also, it is seen that skin friction in tangential and azimuthal direction increases against the buoyancy forces ratio parameter. Current results are validated with previous literature work.

Darcy–Brinkman–Forchheimer forced convective pseudo-plastic nanofluid flow through annular sector duct

In this research paper, we numerically analyze the flow and heat transfer rate of non-Newtonian pseudo-plastic nanofluid with variable apparent viscosity and thermal conductivity effects, respectively, through annular sector duct. Concentric pipes annular sector duct of an apex angle, [Formula: see text] and ratio of radii, [Formula: see text], is filled with saturated porous media. For this purpose, we utilize the power law Darcy–Brinkman flow model along with Forchheimer term. Also, the contribution of nanoparticles is accounted in carboxy methyl cellulose (CMC)-water, which has been taken as base fluid. Finite volume method (FVM) is utilized to discretize the governing mathematical model, whereas algebraic equations are solved numerically by using strongly implicit procedure (SIP). With the help of graphs, the impacts of nanoparticles’ contribution and porosity factor have been discussed by giving physical interpretation. Results are also found in the limiting sense and show the good agreement with already published data. At [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text], we can observe down in [Formula: see text] and Nu upto [Formula: see text] and [Formula: see text], respectively, when n decreases from 1 to [Formula: see text], whereas [Formula: see text] and [Formula: see text], respectively, by decreasing the value of n from 1 to [Formula: see text]. For both cases of nanoparticles’ contribution, the downs in Nu have been observed same by decreasing the value of n.

Effect of variable viscosity on oscillatory heat and mass transfer in mixed convective flow with chemical reaction along inclined heated plate under reduced gravity

Reduced gravity refers to the actual decline in the accelerated motion of gravitation that occurs when a particular fluid comes into contact with another fluid that has different densities as a result of buoyant effects. The reduced gravity mechanism is very affective along the inclined geometries to reduce more gravitational pressure. In comparison to ordinary action of gravity, reduced gravity was reported to demonstrate less heat transfer, which helped to thicken the liquid layers. The main objective of this study is to illustrate the effects of chemical reaction and variable viscosity on oscillatory behavior of heat and mass transfer along an inclined heated plate under reduced gravity. The viscosity of fluid is assumed as a function of temperature. The mathematical model is developed in terms of partial differential equations and converted into steady and oscillating part by using oscillating Stokes conditions. The primitive variable formulation is used to convert steady and oscillating part into convenient form for smooth algorithm. The numerical results are deduced in tables and graphs with the help of FORTRAN and Tecplot 360. The velocity, temperature distribution, concentration profile, oscillatory skin friction, heat transfer and mass transfer are plotted for various governing parameters. The range of parameters has selected according as Prandtl number 0.1≤Pr≤7.0, buoyancy parameter 0<λT,λC<∞, Schmidt number 1.0≤Sc≤6.0, 0.1≤Rg≤8.0 and the choice of reaction rate parameter set the effects of chemical reaction respectively. The results show that the velocity profile increases as viscosity decreases under reduced gravity. It can be seen that temperature profile decreases as reduced gravity increases with lower viscosity. It is noticed that the heat and mass transfer increases with significant amplitude in the presence of reduced gravity and chemical reaction.

Variable viscosity effects on unsteady MHD reactive third-grade fluid with asymmetric convective cooling within porous Couette device

The principal motive of this study is to present a detailed account of the impact of both flow and energy profile of a time-dependent, incompressible, reactive third-grade fluid having low electrical conductivity besides variable viscosity through a porous channel accompanied by asymmetric cooling at the walls. The highly coupled equation of motion and energy manifested as non-linear partial differential equations are represented as algebraic equations using an implicit finite difference scheme and solved numerically by implementing the damped-Newton method. The solution obtained is eventually simulated using MATLAB and the resulting graphs representing the influence of non-dimensional parameters on the flow field and temperature field are discussed thoroughly. It is noted that an increase in γ values enhances non-Newtonian fluid properties which result in the thickening of the fluid and consequently fall in fluid velocity. An increase in reaction parameter and variable viscosity values remarkably enhances viscous heating source terms and contributes to the overall rise in fluid temperature. It is also observed that due to the nature of coupling of the source terms, for the majority of the non-dimensional parameters, there is a simultaneous increase or decrease in the momentum and energy profile of the fluid.

Entropy analysis of unsteady MHD nanofluid flow over a stretching surface with effects of variable viscosity and nonuniform heat generation

An unsteady two-dimensional nanofluid flow across a permeable stretched sheet is examined in terms of thermodynamic analysis. Water is utilized as the basic fluid, together with four distinct types of nanoparticles: copper (Cu), copper oxide (CuO), aluminum oxide (Al2O3), and titanium dioxide (TiO2). An external source is used to describe the heat transfer phenomena. The effects of heat generation and absorption are also taken into account. The nonlinear partial differential equations are transformed into a system of nonlinear ordinary differential equations via a similarity transformation. The spectral quasi-linearization approach is then used to numerically integrate the altered equations. Except when otherwise noted, the findings are provided for copper nanoparticle situations. A visual and detailed explanation of the effects of several physical factors on the profiles of dimensionless velocity, temperature, average entropy generation function, skin friction, and the Nusselt number are discussed. As exceptional circumstances of the current findings, there is a strong agreement between the current conclusion and the findings of the other researchers. The average entropy generation number, temperature, and velocity profiles are shown to be strongly influenced by regulating factors. It is concluded that the average entropy generation decreased in the presence of a temperature- and space-dependent heat source/sink, but it improves with enhanced viscosity parameter. The significance of the present study has frequent applications in the major area of heat transfer enhancement in renewable energy systems, industrial thermal management, and also materials processing.

Impacts of variable viscosity and chemical reaction on Ohmic dissipative fluid flow in a porous medium over a stretching sheet with thermal radiation

AbstractThis study investigates the chemical reaction influence on heat transfer flow of viscous Newtonian fluid over a moving surface under the intensity of nonuniform heat source/sink. Variable fluid viscosity and ohmic heating effects are considered in the model equation. The uniqueness of the present investigation is to scrutinize the significance of nonuniform heat source/sink and ohmic heating on the heat transfer flow of optically thin radiative fluid in a permeable medium. The flow equations of continuity, momentum, thermal and solutal fields are converted by invoking relevant dimensionless variables. Also, the converted nonlinear equations are analyzed numerically by using the fourth order Runge–Kutta Fehlberg approach. The significance of model parameters are scrutinized and discussed in detail via graphs and tables. The important findings of this study are the effects of Joule heating , viscous dissipation parameter , variable fluid property parameter and radiation parameter on fluid flow, energy profile and solutal field. The results show that the thermal field depreciates as the Prandtl number increases but escalates against higher values of Joule heating parameter and Brinkman number. Also, the outcome of this study reveals that an enhancement in the values of variable viscosity parameter declines velocity distribution. Concentration distributions behave as a growing function of the Soret number and diminishing function of the Schmidt number. Furthermore, contrasting this study with existing results reveals excellent agreement.

Heat and mass transfer analysis for magnetized flow of {mathrm{ZnO}-SAE50} nanolubricant with variable properties: an application of Cattaneo–Christov model

The current study scrutinizes heat and mass transfer features of magnetized flow of {mathrm{ZnO}-SAE50} nanolubricant over Riga plate in a Darcy Forchheimer medium. The effects of variable viscosity, thermal radiation, variable thermal conductivity, viscous dissipation and uniform heat source/sink are examined in this study. The diffusion model presented by Cattaneo–Christov is incorporated in this study to enclose heat and mass transport phenomenon. Additionally, the mass transfer rate is inspected subjected to the effects of variable solutal diffusivity and higher order chemical reaction. Heat and mass transfer phenomena have significant applications in the disciplines of science and technology that can be seen everywhere in nature. This simultaneous transportation phenomenon indicates a variety of applications in manufacturing processes, aerodynamics, cooling systems, environmental sciences, oceanography, food industries, biological disciplines, and energy transport systems etc. The modeled system of PDEs is metamorphosed to nonlinear ODEs with the introduction of appropriate transformations. An eminent bvp4c method in MATLAB has been incorporated to execute the resulting system of ODEs numerically. The outcomes of velocity, temperature and concentration profiles corresponding to various emerging parameters have been exposed graphically. The motion of {mathrm{ZnO}-SAE50} nanolubricant tends to enhance significantly with larger modified Hartmann number, whereas converse behavior is reported by increasing porosity parameter and variable viscosity parameter. The greater heat transfer rate is observed for variable thermal conductivity parameter. The rates of heat and mass transfer slow down for thermal and solutal time relaxation parameters respectively. The concentration profile gets enriched by growing the order of the chemical reaction and variable mass diffusivity parameter. It is concluded that by increasing solid volume fraction up to 1.5%, the viscosity of the nanolubricant enhances up to 12% which consequently slows down motion of the nanolubricant but increases temperature and concentration profiles.

Thermal description and entropy evaluation of magnetized hybrid nanofluid with variable viscosity via Crank–Nicolson method

The dominant characteristics of hybrid nanofluids, such as low cost, improved heat transfer rates, and higher thermal and electrical conductivity, make them preferable fluids in thermal energy systems. In light of these incredible features, our goal in the present research is to analyse heat transfer and entropy generating in (Fe3O4–Cu)/water hybridity nano liquid flowing via a vertical cone with variable wall temperature inserted in a porous material. The effects of variable viscosity, magnetic force, and thermal radiative flux are additional aspects that contribute to the originality of the constructed model. The mathematical model is solved utilising the Crank-Nicolson technique, and the numerical findings are showed graphically and in a tabular manner. The heat transfer process is improved by hybrid nanoparticles and porosity while being hindered by magnetic interaction, viscosity, and thermal radiation. Energy loss in the form of increased entropy can be noted at the further vertical end of the cone than the base. The parametrical influence was reported to be nominal compared to the other physical aspects. Domination of heat transfer induced entropy generation and be observed for the porosity improvements.

Unsteady nanofluid flow over a cone featuring mixed convection and variable viscosity

This article addresses unsteady nanofluid flow over a cone with MHD and mixed convection effects. Effects of variable viscosity and viscous dissipation are also considered. The resulting system of equations is tackled through the Homotopy Analysis Method (HAM). The impact of different influential variables on skin friction coefficient, heat and mass flux are discovered through numerical tables and graphs. It is noted that the surface drag force in x and y directions increases against the buoyancy force parameter. Also, it is observed that the tangential and azimuthal velocity decrease against the variable viscosity parameter. Furthermore, the temperature of fluid is observed to decay against the unsteady parameter but it increases against the Eckert number.

Effects of the variation of viscosity on the stability of thin liquid film flows along a uniformly heated substrate under heat flux boundary condition

The effects of variable viscosity on the stability of gravity-driven, Newtonian, thin liquid film flowing down a uniformly heated substrate under heat flux (HF) boundary condition is investigated. HF boundary condition allow us to consider the heat loss from the system at the solid–air interface as well as the heat flux by the rigid wall to the surrounding liquid, both of which effects the temperature gradient on the solid–liquid interface. This model is more realistic in comparison with specified temperature (ST) boundary condition/Dirichlet condition. The underlying assumption of ST boundary condition is that the heat flux at the solid–liquid interface is equal to the heat loss at the solid–air interface. It results in vanishing temperature gradient on the top surface of the rigid wall. Consequently, both the heat flux at solid–liquid and solid–air interfaces have no influence on the thin liquid film flow over the rigid substrate. Considering exponential variation of viscosity, together with the linear variation of surface tension, an evolution equation is constructed, using long-wave expansion technique. This evolution equation captures the effect of the variation of viscosity, thermocapillarity, and heat flux at the solid–air interface, through the parameters, Kμ (coefficient of dynamical viscosity), MBs (products of film Marangoni and free surface Biot number), and Bw (wall film Biot number), respectively. Using normal mode approach, the linear stability analysis reveals the destabilizing behavior of Kμ, MBs, and stabilizing effect of Bw. Using multiple-scale analysis, the weakly nonlinear study demarcates the supercritical (subcritical) stable (unstable) zones and their dependence on Kμ and Bw. Finally, the numerical simulation of the evolution equation, by the spectral method over a periodic domain, confirms the results obtained by the linear and weakly nonlinear study.

Onset of stability and heat transfer by Rayleigh-Bénard magnetoconvection with variable viscosity effect using Ginzburg-Landau model: Effect of thermal/gravity modulation

In modulating the commencement of Rayleigh-Bénard convection, thermal/gravitational modulation refers to its promising uses in various technical and scientific disciplines, including crystal formation, space laboratory research, and atmospheric convection. The aim of the study is to demonstrate the effect of thermal/gravitational modulation on the onset of stability and heat transfer of the Rayleigh-Bénard magnetoconvection with variable viscosity. The disturbance produced by the thermal/gravitational modulation is expanded in terms of the power series of the amplitude of the convection, and a non-autonomous Ginzburg-Landau equation is derived. The numerical solution of the Ginzburg-Landau equation is obtained using the classical Runge-Kutta method, which helps to determine the necessary amplitudes for the quantification of heat transfer. The examination of the data demonstrates that the commencement of convection and heat transfer can be advanced or suppressed by appropriately adjusting the problem’s parameters. The issue also shows how different parameters affect the Nusselt number, which measures the heat transfer coefficient.

Effect of Thermal Radiation and Variable Viscosity on Bioconvective and Thermal Stability of Non-Newtonian Nanofluids under Bidirectional Porous Oscillating Regime

The bioconvective flow of a Jeffrey fluid conveying tiny particles under the effect of an oscillating stretched bidirectional surface is considered in this paper. The effects of thermal radiation and a porous medium are also investigated. The Cattaneo–Christov diffusion theories are used to analyze the heat and mass transfer phenomena. The activation energy effects are included in the concentration equation. The solved dimensionless equations system is established, based on non-dimensional variables. The analytical findings are evaluated using the homotopic analysis technique. The convergence of solutions is ensured. The results are validated by already available published findings and a good concordance is encountered. The fundamental physical aspect of flow parameters is graphically evaluated. The main results reveal that the velocity is reduced by increasing the permeability of the porous medium. An increase in the temperature occurs when the viscosity of the fluid is varied. The obtained results can be useful in thermal systems, energy production, heat transfer devices, solar systems, biofuels, fertilizers, etc.