Stress Coefficient Research Articles

Effect of a DLC film on the sliding-wear behaviour of Ti6Al4V: Implications for dental implants

Titanium alloys are widely used in parts of dental implants, such as screws and abutments. In practice, unwanted relative sliding between contacting implant parts can cause excessive wear, which may lead to early failure. The effect of a submicron diamond-like carbon (DLC) coating on the friction and wear of Ti6Al4V alloys under sliding contact in artificial saliva was investigated. Critically, the DLC film suppressed adhesion between contacting surfaces, significantly lowered the coefficient of friction and contact stress, and ultimately the wear rate, relative to uncoated Ti6Al4V, while maintaining good film-substrate bonding and undergoing a limited extent of fracture. Results are explained within the framework of contact mechanics. Implications for the development of durable dental implants are discussed.

Significance of Nanoparticle Radius and Gravity Modulation on Dynamics of Nanofluid over Stretched Surface via Finite Element Simulation: The Case of Water-Based Copper Nanoparticles

This communication studies the importance of varying the radius Dp of Copper nanoparticles for microgravity-modulated mixed convection in micropolar nanofluid flux under an inclined surface subject magnetic field and heat source. In the current era, extremely pervasive modernized technical implementations have drawn attention to free convection governed by g-jitter force connected with microgravity. Therefore, fixed inter-spacing of nanoparticles and effects of g-jitter on the inclined surface are taken into consideration. A mathematical formulation based on conservation principles was non-dimensionalized by enforcement of similarity transformation, yielding a related set of ODEs. The convective non-linearity and coupling, an FE discretization, was implemented and executed on the Matlab platform. The numerical process’ credibility was ensured for its acceptable adoption with the defined outcomes. Then, the computational endeavor was continued to elucidate the impacts of various inputs of Dp, the amplitude of modulation ϵ, material parameter β, mixed convection parameter λ, inclination angle γ, and magnetic parameter M. The enlarging size of nanoparticles accelerated the nanofluid flow due to the depreciation of viscosity and receded the fluid temperature by reducing the surface area for heat transportation. The modulated Nusselt number, couple stress, and skin friction coefficient are significantly affected by the variation of Dp, M, β, λ, and ϵ. These results would benefit experts dealing with upper space transportation and materials’ performance, such as the effectualness of chemical catalytic reactors and crystals.

Intrinsic magnetism with high critical temperatures and piezoelectricity in 2D transition metal tetraborides

AbstractDeveloping 2D materials with intrinsic magnetism is an essential issue owing to their wide potential applications in spintronics. Here, a type of transition metal tetraborides, TMB4, (TM = TiCo) monolayers were systematically investigated by employing first principles calculations. Our results showed that the predicted structures hold buckled motif, ultrahigh stability and large magnetic anisotropy energy. It is revealed that CrB4, MnB4, and FeB4 monolayers are robust ferromagnetism, differently, TiB4, VB4, and CoB4 monolayers are stable anti‐ferromagnetism. Based on the Monte Carlo simulation, the critical temperatures of these magnetic systems are around 177–755 K. Most importantly, CoB4 monolayer is confirmed to be an antiferromagnetic semiconductor with out‐of‐plane magnetic easy axis and out‐of‐plane piezoelectricity with large piezoelectric stress coefficients. Our study suggests that the 2D TMB4s hold promising applications for spintronic devices and piezoelectric devices.

Study on Stress Evolution and Crushing Behavior of Jointed Rock Mass under Confining Pressure and Joint Materials

To study the effects of confining pressure and joint material properties on stress evolution and fracture behavior of jointed rock mass under SHPB impact load, the numerical software LS-DYNA and the indoor SHPB impact system are used to carry out experimental research on intact rock mass and jointed rock mass. The peak stress, reflection and transmission coefficient, and specimen failure state of rock specimens under different schemes are obtained. The effects of confining pressure level and joint material properties on the propagation and attenuation law of explosive stress waves are expounded. The test results show that when the confining pressure is within a specific range, the impact resistance of the limestone specimen can be increased, and the more difficult it is to be destroyed. Moreover, if the confining pressure continues to increase after rising to the peak value, the impact resistance of rock specimens will decline. In that case, the impact resistance of the specimen will decrease—the dynamic strength of jointed rock mass changes with a change in joint material. The dynamic strength of cement jointed rock is the highest, that of gypsum jointed rock is the second, and that of epoxy resin jointed rock is the lowest. The impact damage resistance of the jointed rock has the same law as the above.

Integral assessment of non-specific lipid peroxidation reactions blood in adolescent girls of the Siberian ethnos

BACKGROUND: Integral parameters, in particular, the oxidative stress coefficient are informative and can be used both for evaluation of pathological conditions and compensatory-adaptive reactions of the organism.
 AIM: To investigate an integral coefficient the activity of nonspecific reactions of lipid peroxidation in adolescent girls of the Buryat, Evenki and Tofalar ethnic groups, as compared to the non-indigenous ethnic groups, by applying.
 METHODS: Total 190 adolescent girls (Buryats, Evenki and Tofalar, and nonindigenous population (for example of Russians)) living in the Irkutsk region were the objects of research. The survey was carried out in expeditionary conditions, in the territories of compact residence of ethnic groups. To calculate the integral coefficient (oxidative stress coefficient), spectrophotometry and fluorometry methods we implemented. The individual indicators: primary, secondary, and final products of lipid peroxidation as well as antioxidant defense components were measured.
 RESULTS: According to the obtained data, a lower content of diene conjugates (DC) (p 0.0001), ketodienes and conjugated trienes (KD and СT) (p=0.0003), -tocopherol (p 0.0001) with elevated levels of TBA-active products (p=0.0074) and superoxide dismutase activity (p=0.0008) in the Buryat ethnic girls group relative to similar parameters of girls in the non-ingenious population was observed. Girls of Tofalar ethnic group had higher values of DC (p=0.0009), with reduced values of KD and CT (p=0.0044) compared to the non-indigenous population. There were no differences among girls of the Evenk ethnic group relative to Russians. An integrative analysis of the state of nonspecific lipid peroxidation reactions using the coefficient showed no significant differences between the studied groups.
 CONCLUSION: The conducted study demonstrates certain changes in the lipid peroxidationantioxidant defence system, in the absence of changes in the total indicator among girls representing Siberian ethnic groups and the Russian population living next to them, which can be the basis for subsequent monitoring of their health status.

Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test

This paper deals with the micro and macro behaviors of coarse sand inside a direct shear box during a geotechnical test. A 3D discrete element method (DEM) model of the direct shear of sand was performed using sphere particles to explore the ability of the rolling resistance linear contact model to reproduce this commonly used test considering real-size particles. The focus was on the effect of the interaction of the main contact model parameters and particle size on maximum shear stress, residual shear stress, and sand volume change. The performed model was calibrated and validated with experimental data and followed by sensitive analyses. It is shown that the stress path can be reproduced appropriately. For a high coefficient of friction, the peak shear stress and volume change during the shearing process were mainly affected by increasing the rolling resistance coefficient. However, for a low coefficient of friction, shear stress and volume change were marginally affected by the rolling resistance coefficient. As expected, varying the friction and rolling resistance coefficients was found to have less influence on the residual shear stress.

Oxidative Stress Reactions in Women of Reproductive Age with Metabolic Syndrome.

We analyzed the levels of LPO products and antioxidant defense components in women with the metabolic syndrome. Women with the metabolic syndrome had higher values of substrates with unsaturated double bonds and final TBA-reactive substances in comparison with the control group and higher levels of unsaturated double bonds, primary and end products of LPO, and retinol in comparison with the reference group (women with less than 3 signs of metabolic syndrome). No statistically significant differences between the groups were revealed while estimating the coefficient of oxidative stress; however, there was a tendency to an increase in the median value of this parameter in the group with metabolic syndrome. Thus, the results of the study indicate the activity of LPO reactions at different stages in women of reproductive age with the metabolic syndrome, which points to the necessity to evaluate and monitor the content of these metabolites in the patients of this cohort for the purpose of prevention and treatment.

A generalized nonlinear three-dimensional failure criterion based on fracture mechanics

Based on fracture mechanics theory and wing crack model, a three-dimensional strength criterion for hard rock was developed in detail in this paper. Although the basic expression is derived from initiation and propagation of a single crack, it can be extended to microcrack cluster so as to reflect the macroscopic failure characteristic. Besides, it can be derived as Hoek–Brown criterion when the intermediate principal stress σ2 is equal to the minimum principal stress σ3. In addition, the opening direction of the microcrack cluster decreases with the increase of the intermediate principal stress coefficient, which could be described by an empirical function and verified by 10 kinds of hard rocks. Rock strength is influenced by the coupled effect of stress level and the opening direction of the microcrack clusters related to the stress level. As the effects of these two factors on the strength are opposite, the intermediate principal stress effect is induced.

Prediction of aerodynamic performance of NREL offshore 5‐MW baseline wind turbine considering power loss at varying wind speeds

AbstractIn this study, a computational fluid dynamics (CFD) model was developed to simulate the aerodynamic performance of the National Renewable Energy Laboratory (NREL) offshore 5‐MW baseline wind turbine with single rotor and full wind turbine. Using statistical methods, the relation between pitch angle and performance when the speed is above the rated wind speed was analyzed; furthermore, other published data were compiled to establish the functional equations of power, thrust with various inflow wind speeds, and pitch angles. In addition, according to shape optimization based on parametric modeling, the two‐dimensional cross‐section of the wind turbine blade can be defined through a metasurface approach, and the three‐dimensional surface modeling of the wind turbine blade, nacelle, and tower is completed using the nonuniform rational B‐splines (NURBS) interpolator. In terms of aerodynamic simulation, the unstructured polygon mesh was used herein to discretize the space and simulate the highly curved and twisted surfaces of the blade. In this study, the compact and accurate mesh form obtained through a grid independence test will be used to analyze the distribution of the pressure coefficient, shear stress coefficient, and limited streamline on the blade surface at various inflow wind speeds and pitch angles to understand the differences between different turbulence models and the causes of power and thrust attenuation at high inflow wind speeds. In addition, the phenomena of blade‐tip vortices, dynamic stall, blade loading, and the interaction between nacelle and tower were collectively explored.

Predicting the bond strength between steel wire and mortar based on interfacial porosity and shrinkage

The interfacial bond strength, which is the key to predict pullout behavior of steel fiber/wire/rebar embedded in cement-based matrix, is usually determined by pullout tests. However, precise pullout test is difficult to be conducted, especially for steel fiber, due to the high accuracy requirements for equipment and operation process. In the present paper, a prediction model on interfacial bond strength between steel wire and cement mortar was developed, based on the interfacial porosity and matrix shrinkage, without conducting pullout test. Firstly, Backscattered Electron test was conducted to determine the interfacial porosity of the steel wire, Nanoindentation test was carried out to determine the elastic modulus of the interfacial zone, restraint ring test was conducted to determine the effective shrinkage deformation of the matrix. The results show that lower interfacial porosity causes higher elastic modulus of interfacial zone, the relationship between interfacial porosity and elastic modulus can be described by a first order fractional function. Then, the extrusion stress between streel wire and matrix was calculated based on the shrinkage deformation of matrix and elastic modulus of interfacial zone. Finally, the frictional bonding strength of interface was calculated based on the extrusion stress and friction coefficient. The calculated frictional bonding strengths for steel wire embedded in mortar with water-cement ratios of 0.25, 0.35, 0.45 and 0.55 are 4.24 MPa, 3.52 MPa, 2.81 MPa and 2.45 MPa, which are in good agreement with the measured bond strengths by pullout test. The prediction model can be extended to predict the pullout behavior of smooth plain steel fibers/wires/rebars in cement-based material.

Effect of water-cooling shock on fracture initiation and morphology of high-temperature granite: Application of hydraulic fracturing to enhanced geothermal systems

Deep geothermal energy exploitation is primarily accomplished using an enhanced geothermal system (EGS) to extract heat from hot dry rock (HDR). The use of hydraulic fracturing technology to build large-scale fracture networks is essential for improving the EGS heat extraction efficiency. Water-cooling shock on high-temperature rock degrades the mechanical properties of the rock while increasing the fracturing effect of HDR. A thermal–hydraulic–mechanical coupling model is proposed herein to investigate the effect of water-cooling shock on fracture initiation and morphology in HDR hydraulic fracturing. The validity of the coupling model is confirmed using theoretical analytical solutions and physical experimental results, such as hydraulic fracturing experiments on high-temperature granite, as well as analytical solutions for the stress shadow effect and fracture initiation pressure. The numerical simulation is performed using a coupling model to investigate the characteristics of fracture propagation and damage evolution during the HDR hydraulic fracturing process as well as to investigate the fracturing effect of water-cooling shock on high-temperature rock. Finally, the effects of initial rock temperature, in-situ stress, and heat transfer coefficient on fracture morphology are investigated. The results show that the combined effects of tensile strength deterioration water-cooling shock, thermal stress caused by cold shrinkage, and pore water pressure are primarily responsible for the initiation and propagation of hydraulic fractures. The water-cooling shock can considerably reduce the fracture initiation pressure, induce more secondary fractures, and form more complex fracture networks. The initial temperature and heat transfer coefficient of the rock affect the thermal stress and tensile strength deterioration. The formation of an intricate fracture network can be aided by a high initial rock temperature, a large surface heat transfer coefficient, and small in-situ stress differences.

Stress coefficients for hybrid bermudagrass in the transition zone

AbstractThe use of drought tolerant turfgrass cultivars is desirable due to greater water use efficiency and sustained acceptable turfgrass quality during times of drought stress. Crop coefficients (Kc) have traditionally been utilized to assist in reducing irrigation by comparing reference evapotranspiration (ETo) to actual evapotranspiration (ETa) of specific crops. However, Kc values are most relevant during times of nonlimiting conditions and do not quantify the amount turfgrasses restrict evapotranspiration (ET) under moderate drought stress. Stress coefficients (Ks) estimate water needs while maintaining minimally acceptable turfgrass quality. The objective of this study was to derive Ks values for four bermudagrass (Cynodon spp.) cultivars managed in the transition zone. Direct measurements of actual evapotranspiration were made through weighing lysimetry during a 2‐year field study. Experimental units were allowed to naturally dry down near wilting point and maintained at a steady level of soil moisture to calculate Ks for each cultivar. A lower Ks value indicates increased turfgrass tolerance to water stress; whereas a Ks value ≥1 suggests higher soil moisture levels are required to sustain turfgrass quality. ‘TifTuf’, ‘Latitude 36’ and ‘Tifway’ were the best performing cultivars with mean Ks values of 0.747, 0.766, and 0.796, respectively. ‘Celebration’ had the highest Ks value of 0.944. The results indicate certain bermudagrass cultivars can maintain quality with less soil water, and the reduced water requirements may be used to schedule efficient irrigation applications.

Plane stress measurement on the cross-section of steel components using ultrasonic shear waves

Plane stress measurement is an important means to obtain the mechanical information of structural steel components. Traditional structural health monitoring techniques are difficult to perform non-destructive measurement of internal plane stress of the components. In this study, we theoretically and experimentally proposed a method for measuring average plane stress on the cross-section of steel components. We derived a new form of plane stress-acoustic relation based on shear wave birefringence and successfully achieved plane stress separation. The phase difference of two groups of echoes was used to calculate effective phase velocity information, where Fourier-transform was used for obtaining the echo phase spectra. The experimental calibration for determining the values of five stress coefficients was presented and the optimal frequency was found to be the center frequency of the probe. The strain gauge method was adopted to prove the effectiveness of the proposed method, and good experimental results were observed.

Molecular dynamics study on enhancement of mechanical and tribological properties of polytetrafluoroethylene composites by incorporating hexagonal boron nitride nanosheets

AbstractMolecular models and sandwiched friction models of pure PTFE and h‐BN/PTFE composite were respectively constructed to investigate the enhancement of mechanical and tribological performances of the polytetrafluoroethylene (PTFE) matrix by incorporating the hexagonal boron nitride (h‐BN) nanosheets as reinforcements. The simulation results indicate that increases of 36.4% in the Young's modulus, 23.6% in the bulk modulus, and 37.3% in the shear modulus of the PTFE matrix are achieved respectively by the incorporation of h‐BN nanosheets. Decreases of 3.48% and 10.27% in the Poisson's ratio and the ratio of bulk modulus to shear modulus of the PTFE matrix are also observed due to the incorporation of h‐BN nanosheets, which shows that the ductility of the PTFE matrix could be somewhat decreased with the addition of h‐BN nanosheets. Additionally, decreases of 69.23% and 69.06% in the coefficient of friction and friction stress of the PTFE matrix are obtained respectively with the introduction of h‐BN nanosheets. To provide in‐depth insight into the internal reason for these findings, the interaction energy between the PTFE matrix and h‐BN nanosheets, the MSD and diffusion coefficient of PTFE chains, and the RDF of carbon and fluorine atoms in the PTFE backbone chains were evaluated and interpreted accordingly.

Comparing Simulated Jujube Evapotranspiration from P–T, Dual Kc, and S–W Models against Measurements Using a Large Weighing Lysimeter under Drip Irrigation in an Arid Area

Accurate prediction of orchard evapotranspiration (ET) can optimize orchard water management. Based on the jujube (Zizyphus jujuba), ET was continuously measured from 2016 to 2019 using a large weighing lysimeter; the actual jujube ET was compared with the ET simulated with the Priestley–Taylor (P–T), Dual Crop Coefficient (Dual Kc), and Shuttleworth–Wallace (S–W) models, to verify the accuracy of the three models. The results showed that, from 2016 to 2019, the whole growth period of jujube ET was 532–592 mm and the crop coefficient was 0.85–0.93. The basal crop coefficients of the calibrated Dual Kc model were 0.4, 1.0, and 0.5 at the initial, middle, and ending growth stages, respectively. The overall simulation error of the Dual Kc model was low, and simulations were stable during the four years of the study. However, because of rough estimation the water stress coefficient (Ks) simulation accuracy will be reduced in the case of serious water shortage. The simulation error of the S–W model was greater than the simulation error of the Dual Kc model, and the simulations were unstable and vulnerable to interannual changes. The simulation error of the traditional P–T model was large. When the parameter “α” solution method was improved, the simulation accuracy was significantly improved, and the P–T model’s simulation accuracy was only slightly lower than that of the Dual Kc model. However, the model was easily affected by changes in net radiation and air temperature. Therefore, the Dual Kc model is recommended for estimating the ET of young jujube trees in arid areas.

The Hydro‐Mechanical Properties of Fracture Intersections: Pressure‐Dependant Permeability and Effective Stress Law

AbstractFluid flow through the brittle crust is primarily controlled by the capability of fracture networks to provide pathways for fluid transport. The dominant permeability orientation within fractured rock masses has been consistently correlated with the development of fracture intersections; an observation also made at the meso‐regional scale. Despite the importance attributed to fracture intersections in promoting fluid flow, the magnitude of their enhancement of fractured rock permeability has not yet been quantified. Here, we characterize the hydro‐mechanical properties of intersections in samples of Seljadalur Basalt by generating two orthogonal, tensile fractures produced by two separate loadings using a Brazilian test apparatus, and measuring their permeability as a function of hydrostatic pressure. We observe that intersecting fractures are significantly more permeable and less compliant than two independent macro‐fractures. We formulate a model for fracture intersection permeability as a function of pressure by adding the contributions of two independent fractures plus a tube‐like cavity with an effective elastic compressibility determined by its geometry. Permeability measurements during cyclic loading allowed determination of the effective stress coefficient (α in pe = pc − αpp) for fracture and intersection permeability. We observe a trend of lower αintersection values with respect to αfracture, which suggests that the channels controlling fluid flow have a higher aspect ratio (are more tubular) for the intersections relative to independent fractures. Our results suggest that fracture intersections play a critical role in maintaining permeability at depth, which has significant implications for the quantification and upscaling of fracture permeability toward reservoir‐scale simulations.

Net Primary Productivity Estimation Using a Modified MOD17A3 Model in the Three-River Headwaters Region

Remote sensing (RS) models can easily estimate the net primary productivity (NPP) on a large scale. The majority of RS models try to couple the effects of temperature, water, stand age, and CO2 concentration to attenuate the maximum light use efficiency (LUE) in the NPP models. The water effect is considered the most unpredictable, significant, and challenging. Because the stomata of alpine plants are less sensitive to limiting water vapor loss, the typically employed atmospheric moisture deficit or canopy water content may be less sensitive in signaling water stress on plant photosynthesis. This study introduces a soil moisture (SM) content index and an alpine vegetation photosynthesis model (AVPM) to quantify the RS NPP for the alpine ecosystem over the Three-River Headwaters (TRH) region. The SM content index was based on the minimum relative humidity and maximum vapor pressure deficit during the noon, and the AVPM model was based on the framework of a moderate resolution imaging spectroradiometer NPP (MOD17) model. A case study was conducted in the TRH region, covering an area of approximately 36.3 × 104 km2. The results demonstrated that the AVPM NPP greatly outperformed the MOD17 and had superior accuracy. Compared with the MOD17, the average bias of the AVPM was −9.8 gCm−2yr−1, which was reduced by 91.8%. The average mean absolute percent error was 57.0%, which was reduced by 68.2%. The average Pearson’s correlation coefficient was 0.4809, which was improved by 30.0%. The improvements in the NPP estimation were mainly attributed to the decreasing estimation of the water stress coefficient on the NPP, which was considered the higher constraint of water impact on plant photosynthesis. Therefore, the AVPM model is more accurate in estimating the NPP for the alpine ecosystem. This is of great significance for accurately assessing the vegetation growth of alpine ecosystems across the entire Qinghai–Tibet Plateau in the context of grassland degradation and black soil beach management.

Viscoelastic Solution for Axial Forces of Point-Anchored Rock Bolts in a Circular Tunnel

In this study, a deeply buried circular tunnel supported with point-anchored rock bolts was investigated. Assuming that the effects of each rock bolt on the surrounding rock are simplified to two identical concentrated forces acting in opposite directions, a viscoelastic analytical solution for the axial forces of the rock bolts is presented herein based on the complex variable method and correspondence principle. First, in the solution process, the surrounding rock is considered as an elastic material. A linear equation system for the axial forces was established according to the deformation coordination condition between the surrounding rock and the rock bolts. Second, the surrounding rock was considered as a viscoelastic material. Based on the correspondence principle, Laplace transformation was performed for the equation system of the axial forces to obtain its expression in the Laplace domain, and the values of the axial forces in the Laplace domain could be determined by solving the obtained expression. Finally, the viscoelastic semi-analytical solution for the axial forces was established using the numerical method of the Laplace inverse transformation. The results obtained were also compared with the numerical methods of ANSYS. Accordingly, the effects of the lateral stress coefficient, rock mass Young’s modulus, rock bolt length, viscosity coefficient, and preload on the axial forces of the rock bolts were discussed.

Understanding the molecular mechanism of drought resistance in Shanlan upland rice by transcriptome and phenotype analyses

Rice (Oryza sativa L.) is an important grain crop worldwide, and drought has become an important factor restricting rice yield. As a unique rice germplasm in Hainan (China), Shanlan upland rice has rich genetic diversity and certain advantage for breeding water-saving and drought-resistance rice. 48 varieties, including 41 Shanlan upland rice, 3 upland rice, and 4 irrigated rice varieties was cultivated in soil pots. The drought resistance was assessed at the seedling stage using the stress coefficients of seven indicators, as the D value calculating from five principal components to rank the varieties. Five cultivars with strong, medium, and low resistance, were selected for transcriptome sequencing. The results of the GSEA analysis showed that free amino acid content increased through the redistribution of energy in Shanlan upland rice to cope with drought stress. In addition, we found that Os03g0623100 was significantly up-regulated under drought stress conditions in varieties with high drought resistance, as compared with low resistance cultivars. The Os03g0623100 was predicted to interact with LEA protein in the STRING database, which may contribute to maintaining the energy metabolisms to under stress conditions. This study provides a view of Shanlan upland rice as a drought-resistant germplasm resource, and a deeper understanding of the molecular mechanism of crop drought resistance.

Dynamic Response of Heat Transfer in Magnetohydrodynamic Blood Flow Through a Porous Bifurcated Artery with Overlapping Stenosis

The influence of heat transfers on magnetohydrodynamic blood flow treated as a Newtonian rheological model in permeable bifurcated arteries with a magnetic field applied in a transverse direction has been presented in this study. The blood flow is considered steady, incompressible, electrically conducting and porous as it consists of fatty accumulation on blood cells. A mathematical model governing such flow phenomena is developed by the Navier-Stokes and energy equations. The governing equations with appropriate boundary conditions are solved numerically by using a stabilized form of the finite element method, called the Galerkin least-squares method. The implementation of this method managed to overcome two sources of undesirable pathologies suffered by the Classical Galerkin method in solving the incompressible flow. This involves the requirement to satisfy the Babuška-Brezzi stability condition and the inherent instability arising from the approximations of highly advective flows. As a result, stable and converged solutions are generated for the velocity, temperature, pressure, wall shear stress and heat transfer coefficient in the constricted bifurcated artery by employing an equal order (quadratic triangular element) of interpolation function for velocity, pressure and temperature subspaces. The developed algorithm is validated with reported findings from previous literature where a close agreement has been achieved. Effects of the porosity parameter and Hartmann number in the presence of heat on blood flow characteristics at several locations along the branch artery are computed and presented graphically. The finding obtained from this work may be beneficial for cryosurgery and hyperthermia treatment in analysing the temperature distributions inside the vessel.