Drop Values Research Articles

Analysis of shift in discharge coefficient for contaminated multihole orifice flow meter

The aim of this paper is to provide a comprehensive numerical study of influence of contamination and multi-hole orifice (MHO) flow meter geometry on shift in discharge coefficient. In this research, authors analyzed steady, three-dimensional, turbulent flow of dry air through MHO flow meter with 3 different β parameters. Shift in discharge coefficient was calculated for 29 different combinations of contamination parameters for 7 contamination angles, 3 different Reynolds numbers and 3 β parameters. Numerical method that was used was finite volume method with SIMPLE algorithm and standard k-ε turbulence model. Grid sensitivity study was performed on four systematically refined numerical grids for MHO with contamination for all values of Reynolds number, all values of β parameters and 3 values of contamination angle. Obtained results were grid independent. Numerical results for MHO without contamination were compared with the experimental results found in the literature. It was found that contamination angle has most influence on shift in discharge coefficient. Also it was found that the contamination has influence on the change of pressure drop values, which directly affects the change of other parameters. Pressure drop and singular pressure loss coefficient of the orifice with contamination are smaller compared to the values for a pure orifice, whereby the measurement accuracy was reduced. It was found that the multi-hole orifice meter was less sensitive to the pressure drop changes due to the increasing of contamination angle in regards to the single-hole orifice meters.

A novel concept of enhanced direct-contact condensation of vapour- inert gas mixture in a spray ejector condenser

An analytical model of direct steam condensation (DCC) in the novel idea of spray ejector condenser (SEC) in the presence of inert gas has been developed. It is based on continuity, momentum and energy equations for the steam-carbon dioxide mixture and direct contact condensation mechanisms due to heat transfer and concentration. Crucial in the process of DCC is atomisation of the motive fluid in the ejector. The effect of atomised droplet size is exhibiting a significant amplification influence with increasing size of the droplet. Motive fluid is driving the secondary fluid-mixture of steam and inert gas in the Venturi nozzle and is cold enough to cause direct condensation. The intensity of heat transfer process from steam to water when the phases are in direct contact is much higher than the heat transfer intensity in surface heat exchangers. The analytical model pertains to a subcritical flow of a mixture of steam and gas in SEC. The model exhibits satisfactory agreement with experimental data. The model of DCC predicts higher values of temperature drop between inlet and outlet from the mixing section for the case of smaller steam-CO2 flow rates. Increasing the flow rate of steam mixture from 1.2 g/s to 3.6 g/s results in a reduction of steam mixture temperature from 25 °C to 14 °C respectively, at CO2 flow rate of 6.8 m3/h. Condensation without presence of CO2 in the same range of steam flow rate, i.e. from 1.2 g/s to 3.6 g/s results in reduction of steam mixture temperature from 56 °C to 25 °C respectively, confirming in such way the effect of CO2 presence on the efficiency of DCC. Such model allow for discussion of parameters affecting process of condensation in SEC and ability of application such condenser in power plants.

SLIP SOURCE MODEL OF THE 1995 NEFTEGORSK EARTHQUAKE (NORTH SAKHALIN) FROM GEODETIC DATA

The May 27, 1995 Mw=7.0 Neftegorsk earthquake occurred in the north of Sakhalin Island, rupturing the Upper Piltun fault, a secondary feature of the main Hokkaido-Sakhalin regional fault zone. The fault geometry, coseismic slip model, and Coulomb stress changes in the earthquake focal area were calculated based on a finite fault modeling. We used near-field coseismic offsets at 24 points obtained by comparison between predating triangulation and GPS observations, which were collected before and after the earthquake. Our slip distribution model shows two major slip patches. Larger slip asperity (amplitude up to 6.36 m) was characterized by right-lateral strike-slip movements, which correspond to focal mechanism of the earthquake, whereas the northern segment has reverse fault mechanism with maximum slip of 2.64 m. The fault length and width, average slip and stress drop values are estimated at 78 km, 28 km, 1.91 m and 11.3 MPa, respectively. The estimated release moment is approximately 7.49×1019 N∙m equal to Mw=7.2, which is larger than that reported by the USGS and GCMT but consistent with the values reported by other researchers. The coseismic Coulomb stress changes enhanced the stress by more than 10 MPa on the southern segment of the Gyrgylaninsky fault and middle section of the Hokkaido–Sakhalin fault. Seismic risks on the nearest faults cannot be ignored in the future despite the fact that the earthquake with a magnitude of 5.8 occurred in 2010 near the Gyrgylaninsky fault. The recent GPS rates in the surroundings of the Neftegorsk surface rupture mean that the recurrence interval for similar earthquakes may be more than a thousand years.

Simulation of Fluid Flow and Heat Transfer Process in Heat Exchangers in Petroleum Industries

Heat exchangers are very useful equipment in a wide range of industries, therefore ?the analysis of the internal flow in them is very important. In this study, a heat exchanger is modeled to solve the flow and temperature field. Three ?turbulence models have been tested for first and second order discretization using ?two different mesh densities, and the results are as follows. The effects of different parameters on the internal conditions of the converter have ?been simulated. The temperature changes decrease in proportion to the reduction of ?the heat transfer coefficient in viscous fluids, and the Reynolds number is greater ?than the Parantel number. For the tube with constant wall temperature and shell inlet, the heat transfer ?coefficient, pressure drop values and heat transfer rate are obtained. In another part, it is shown that the stabilization time of the fluid temperature has a ?direct relationship with the heat capacity of the pipes, and that the performance of ?the tubular heat exchanger with spiral walls is better than that of segmental walls. The intermittent temperature input has been investigated. It has been shown that ?the other flux will fluctuate with the same frequency, which it also proved our ? theoretical results.

Development of a jeans sizing system for young black pear-shaped South African women

The South African Pear-shaped Black women’s jeans market has been confronted by fit dissatisfaction, although there is a growing demand for jeans. This study was approached from the viewpoint that jeans do not fit a large population of this consumer group and investigated the issues related to this problem. Local manufacturers and retailers currently use an adaptation of the British sizing system to suit their customer profile. Not much research, however, has been carried out on developing a sizing system for the pear-shaped figure type, which makes up a sizeable portion of the population in the country. The aim of the study was to establish key variables for developing a jeans sizing system for Black South African pear-shaped women. A total of 60 Black women aged 18 to 35 years at the Cape Peninsula University of Technology were scanned for body measurements using a 3D body scanner. Body measurement differences were examined by using a quantitative research approach to establish the difference between waist and hip measurements. The findings revealed an average drop value of 39cm between waist and hip circumference for a Black pear-shaped figure, in comparison to a drop value of 24cm for a standardised sizing used by the clothing industry. It is recommended that the major stakeholders consider conducting a national anthropometric study to update sizing systems, by using 3D body scanning technology, which provides accurate and consistent measurements of the human body.

Thermohydraulic performance assessment of new alternative methods for anti-icing application against current application in an aircraft

In this study, anti-icing problems, which are mostly industrial problems in aerospace companies, have been numerically investigated. Herein, to enhance anti-icing performance of NACA0015, different jet-to-surface distances ( H/d), jet angles ( α), and slot jet designs with different aspect ratios ( ARs) have also been investigated. ANSYS Fluent 2020R2 commercial program has been utilized for all numerical calculations. In addition, the SST k-ω with low-Re correction wall treatment turbulence model has been used for solving turbulence equation. Furthermore, the average Nusselt number ( Nu) on the NACA0015's surface, pressure drop, and performance evaluation criteria (PEC) which define the anti-icing performance of novel proposed system have been presented section by section. As a result of the investigation, it has been obtained that the use of AR = 4 increases the Nu by 85.52% compared to circular jet for the H/d = 4 at α = 90°. The pressure drop value dramatically increases using AR = 4 around 307.85% compared to circular jet for H/d = 4 at α = 90°. Despite this drastic increment in pressure drop, the PEC value is kept as 1.14 using AR = 4, H/d = 4, and α = 90°. Finally, empirical correlations developed from existing findings have been presented with an error rate of lower than 5%.

Experimental Thermohydraulic Assessment of Novel Curved Ribs for Heat Exchanger Tubes: A Machine Learning Approach

Heat transfer enhancement using curved ribs of different cross sections, viz., square, rectangular, triangular, and circular, is a crucial study for designing heat-exchanging devices for various applications, and their thermohydraulic performance prediction using machine learning technique is a vital part of the modern world. An experimental study on using curved ribs suitable for heat transfer enhancement for the circular tube is presented for turbulent airflow with Reynolds numbers varying from 10,000 to 50,000. The machine learning methodology is used to predict the thermohydraulic performance assessment of curved ribs. The square cross-sectioned curved ribs produce the highest performance factor R3 of 1.5 to 2.65 to the equivalent Reynolds number Rec value of 20,000. It is observed that most of the curved rib configurations show a performance ratio R3 maximum and are suitable at a low Reynolds number value. At moderate and high Reynolds number values, the performance factor values decrease due to a rise in the pressure drop values for a few curved rib configurations. An artificial neural network (ANN) model predicts with an accuracy of 95% with the present study experimental values for the heat transfer performance indicators like average heat transfer enhancement Nua/Nus, average heat transfer enhancement fa/fs, and performance ratio R3, i.e., Nua/Nuc.

Experimental Study of an Internally Channeled Tube Heat Exchanger under Turbulent Flow Conditions

In our previous work, an innovative heat exchanger design, the so-called internally channeled tube (ICT), was proposed based on a channels-in-tube principle. The new geometry provides a significantly larger heat transfer area than similar conventional heat exchangers. Furthermore, a three-dimensional numerical model was developed to govern fluid dynamics and heat transfer in the ICT. The focus of the present paper is an experimental investigation of the ICT under turbulent flow conditions. The experimental set-up is presented in detail and the measurement procedure is highlighted. In particular, the maldistribution issue is considered. Measured pressure drop and temperature values are used to validate the numerical model. The deviation between simulated and experimental values is below 6.5% for the pressure drop and below 13% for the heat transfer coefficient.

Proposal for New Development Environment Based on Digital Materials and a Case Study of Gasoline Particulate Filter

Carbon dioxide emissions must be reduced as a countermeasure against global warming. A gasoline direct injection (GDI) engine is known for its high fuel economy, but there are more particulate emissions. To trap these particulates, a gasoline particulate filter (GPF) is needed. In this study, numerical simulations of the flow field in the GPF have been performed using the lattice Boltzmann method (LBM). Three types of filters were tested by our proposed approach, named as a digital material technique, where virtual materials are created by the simulation. Focusing on the pore characteristics of the filters, we used filters with the same pore size but different porosity. For comparison, the real internal structures of the actual GPF were detected using an X-ray CT method. The simulated flow field and the pressure drop across the filter wall were investigated, comparing with those of the actual GPF. As a result, it was found that the larger the porosity, the smaller the pressure drop. By setting the pore size and porosity to the same values as the actual GPF, a similar flow field was obtained, and the value of the pressure drop was close to that of the actual GPF.

Computational fluid dynamics for the optimization of internal bioprinting parameters and mixing conditions

Tissue engineering requires the fabrication of three-dimensional (3D) multimaterial structures in complex geometries mimicking the hierarchical structure of biological tissues. To increase the mechanical and biological integrity of the tissue engineered structures, continuous printing of multiple materials through a printing head consisting of a single nozzle is crucial. In this work, numerical analysis was carried out to investigate the extrusion process of two different shear-thinning biomaterial solutions (alginate and gelatin) inside a novel single-nozzle dispensing system consisting of cartridges and a static mixer for varying input pressures, needle geometries, and outlet diameters. Systematic analysis of the dispensing process was conducted to describe the flow rate, velocity field, pressure drop, and shear stress distribution throughout the printing head. The spatial distribution of the biopolymer solutions along the mixing chamber was quantitatively analyzed and the simulation results were validated by comparing the pressure drop values with empirical correlations. The simulation results showed that the proposed dispensing system enables to fabricate homogenous material distribution across the nozzle outlet. The predicted shear stress along the proposed printing head model is lower than the critical shear values which correspond to negligible cell damage, suggesting that the proposed dispensing system can be used to print cell-laden tissue engineering constructs.  

The effect of the triangular rib usage in the plate fin heat sinks on the pressure drop, base plate temperature, and entropy generation

Improving the thermal efficiency in plate fin heat sinks (PFHS) results in a reduction in the weight, volume and cost of the heat sink. This ensures long life and reliable operation of the cooled equipment. In this study, the performances of triangular ribbed PFHSs, which are formed by placing a staggered array of triangular ribs between plate fins, were numerically investigated. Pressure drop, base plate temperature and entropy generation are used for performance comparisons. Numerical heat transfer and flow analysis were performed in three-dimensional models with the help of Ansys Fluent program, which uses the finite volume method with incompressible, turbulent flow and conjugate heat transfer assumptions. The design parameters were determined as inlet velocity between 3 m/s and 9 m/s, number of plate fins 9, 12 and 15, plate fin heights 10 mm and 30 mm, triangular rib heights 0.1 mm and 0.3 mm. As a result, the heat sink base temperature decreases with the increase of velocity, fin height, number of plate fins and triangular rib height, lower pressure drop values were obtained in the case of Hrib=0.1 mm compared to the unribbed case. If the design with the least entropy production is desired as the optimum design, there is a %10.64 increase in the base temperature and a significant decrease in the pressure drop (220.88 Pa to 7.512 Pa). In this case, since the fin length is H=30 mm, the volume and weight of the heat sink also increase.

Analysis of fluid flow behaviour in different proton exchange membrane fuel cell flow field configurations

AbstractThe performance of a proton exchange membrane fuel cell (PEMFC) stack is largely affected by the bipolar plate design. Uniform gas distribution throughout the active area with effective mass transport is critical to avoiding activation, concentration and ohmic losses that can reduce the overall stack performance. In this study, three inlet/outlet turning angles (90, 135 and 180°) were first simulated with a conventional parallel (CP) flow field. It was found that the 135° inlet/outlet angle showed the most optimised fluid distribution in the flow field. Thus, improving fluid uniformity up to 6% and reducing pressure drop up to 36%. This turning angle was then simulated in three different flow fields (modified serpentine [MS], modified fishbone [MF] and Tesla valve [TV]). MF generated the lowest pressure drop value of 80.11 Pa, but flow channelling was apparent in the fluid channels. The pressure drop in MS was 43% higher than in TV. Furthermore, the continuous fluid flow mechanism of the TV design generated up to two times higher uniformity level than MS. Hence, a TV flow field with a 135° inlet/outlet angle evidently demonstrated uniform fluid distribution, which can significantly enhance the multi‐phase fluid dynamics in a PEMFC.

Eccentric Rotor Drop Dynamics Study of Vertical Maglev Bearing System

When considering the problem of a vertical magnetic levitation bearing system, the rotor eccentric fall is more likely to cause the failure of the protective bearing. In this paper, a rotor drop collision model and a protective bearing dynamics model are constructed. It compares and analyzes the evolution of collision force values of the rotor eccentric drop as well as the non-eccentric drop. Further, this paper discusses the law of influence of three factors, rotor quality, rotational speed, and axial protection clearance, on the collision characteristics of the protected bearing in eccentric and non-eccentric cases. It has also experimentally verified this characteristic of rotor speed. The results show that compared with the non-eccentric condition, the axial impact force and radial impact forces of the rotor in the eccentric condition increase by 14% and 114%, respectively. Compared with the non-eccentric condition, with the increase in rotor quality, the axial and radial impact force increase by 68% on average, and the axial depth amplitude of the rotor increases by 350%. With the increase of rotor speed, the axial impact force without an eccentric drop is basically unchanged; the axial impact force of an eccentric drop increases slightly, and the radial impact force increases by 110%. With the increase of axial protection clearance, the radial displacement vibration of the rotor axis increases; the average increase of the maximum axial force is 120 N, and the average increase of the maximum radial force is 100%.

Pengaruh Variasi Tebal Orifice dan Bilangan Reynolds (Re) terhadap Penurunan Tekanan (Pressure Drop) pada Entrance Region

Orifice is a device that is placed in a pipe flow to inhibit the flow of fluid and cause a pressure drop. The measurement of the flow rate (flow rate) is obtained from the difference in pressure due to the pressure drop. In this study, it analyzed the influence of differences in plate orifice thickness variations used ranging from 2 mm to 4 mm thick with variations in increments every 0.5 mm with an orifice center hole diameter of 1.5 cm. Orifice placement is placed in an area whose speed profile is still changing or called the entrance region with a pipe diameter used 2.54 cm (1 Inch) diameter in the pipe. Then along the entrance area are paired 12 piezometer points along 75 cm with a position of laying 6 piezometer points before the orifice valve and 6 piezometer points after the orifice valve and in this experiment set the Re value to 3 Variations of Re, namely Re 1: 9784.5; Re2: 14647.5; Re 3: 19510.45 and this experiment was carried out at a temperature of 27 °C. In this study, the results were obtained for the highest irrecoverable pressure drop value located in the flow discharge with Re 19510.45 and at the thickness of the plate orifice 4 mm with an irrecoverable pressure drop value of 3033.01 Pa and while for the lowest irrecoverable pressure drop value, it was located in the flow discharge with a value of Re 9784.5 at an orifice plate thickness of 2 mm with an irrecoverable pressure drop value of 548.26 Pa. The highest discharge of coefficient (Cd) value lies in the flow discharge with a value of Re 14647.5 at the plate orifice thickness of 3.5 with a Cd value of 0.718 and while for the lowest discharge of coefficient (Cd) value lies in the flow discharge with Re 14647.5 with an orifice plate thickness of 2 mm with a Cd value of 0.609.

Numerical study of hydrodynamic forces of nonlinear fluid flow in a channel-driven cavity: Finite element-based simulation

This communication is aimed at presenting the flow behavior of viscoplastic materials in a channel driven-cavity by utilizing the Bingham constitutive equation in conjunction with the modification proposed by Papanastasiou. The whole system has been represented by a model consisting of coupled nonlinear partial differential equations. In addition, the governing equations were nondimensionalized by making use of the appropriate set of variables and the computations were carried out using the finite element method. A finite element space including quadratic polynomial [Formula: see text] is chosen for the approximation of velocity profiles whilst a space containing linear polynomials is used for the estimation of pressure [Formula: see text]. The hydrodynamics forces like drag and lift values on cylindrical obstacle whose center is located at (1.5, 1.5) are computed against various values of Bingham number. Moreover, pressure drop values between the back and front of the square obstacle have also been tabulated.

Pulmonary vein isolation with the novel radiofrequency balloon catheter: predictors of single-shot isolation

Abstract Funding Acknowledgements Type of funding sources: None. Background Single-shot technologies have demonstrated comparable results to point-by-point ablation for pulmonary vein (PV) isolation (PVI). The novel multi-electrode radiofrequency (RF) Balloon catheter (RFB) has been developed to achieve safe and effective single-shot PVI. Purpose This single-centre study aimed to evaluate ablation parameters predictors of single-shot PVI with the novel RFB. Methods All consecutive patients with symptomatic paroxysmal or persistent atrial fibrillation (AF) undergoing first-time PVI with the RFB between August 2021 and November 2022 were prospectively included. Remapping was performed in all patients to confirm persistent intraprocedural PVI. Clinical, procedural and ablation parameters were systematically collected. First RF applications were categorized as follows: 1) single-shot PVI (SS-PVI), in case of PVI without acute intraprocedural reconnection and 2) non-single-shot PVI (NSS-PVI), if single-shot isolation was not obtained at first application or if isolation was followed by acute PV reconnection. Results A total of 492 first RF applications were analysed, 433 (88.1%) SS-PVI and 59 (11.9%) NSS-PVI. Overall, the mean impedance drop was 22.9 ± 5.4 Ω, and the mean temperature rise was 12.2 ± 3.3 °C. SS-PVI showed higher mean impedance drop and mean temperature rise compared to NSS-PVI (23.3 ± 5.3 Ω vs 20.1 ± 4.9 Ω, p<0.001; 12.4 ± 3.3 °C vs 10.8 ± 2.8 °C, p<0.001, respectively). SS-PVI showed higher values of mean impedance drop and temperature rise for all veins, except for the left superior PV. For the other PVs, impedance drop and temperature rise were significant predictors of SS-PVI (OR per 1 Ω increase, 1.22, 95% CI 1.13-1.32, p<0.001, and OR per 1 °C increase, 1.34, 95% CI 1.17-1.54, p<0.001, respectively). The best cut-offs to predict SS-PVI were: impedance drop >19.2 Ω (sensitivity 0.79, specificity 0.62, PPV 0.94, NPV 0.25, AUC 0.75) and temperature rise >11.1 °C (sensitivity 0.58, specificity 0.84, PPV 0.18, NPV 0.97, AUC 0.72); Figure 1. Conclusion Specific cut-offs of impedance drop and temperature rise are able to predict single-shot PVI with the novel RFB and may be implemented in the procedural workflow to optimize the ablation procedure.

Modeling of the pressure drop effect using membrane distillation in the desalination process

The desalination process using membrane distillation (MD) has recently attracted wide attention in the last few years around the world. Especially, membranes that have an asymmetric geometry, for their performance to filtrate the salt water and the high salt rejection. In this paper, the Langevin dynamics model was adopted as a simulation method to investigate the transport of salt water through the sloping membrane under a pressure drop. The surface of the used membrane is considered as a hydrophilic sloping surface. Thus, the pressure drop effect on the fluid flux was observed, which leads to attracting the salt water into pores that are randomly distributed. The influence of deposition and accumulation of the ions into pores, the incline angle of the membrane surface, and the thickness of the formed layer on the surface were investigated. In addition, the impact of biofouling is caused by the accumulation and the variation of the fluid velocity as a function of pressure drop values. The obtained results show that the relationship between the fluid velocity and the pressing force is a power law. Moreover, the increase in fluid flow velocity in the porous medium is severe in the earlier time regime, but it becomes almost constant in the second regime. However, the time desalination process increases linearly with the pressure drop. Moreover, the accumulation and deposition of ions into the pores cause a decrease in the water flow through the pores resulting in a higher pressure drop in the less inclined direction. Finally, the influence of deposition and accumulation of the salt phase into the pores on the membrane performance was remarked, resulting in a high desalination rate. The obtained results explain the salt water behavior through a porous membrane, which provides ideas for making a high membrane performance.

A CFD Modelling Approach for the Operation Analysis of an Exhaust Backpressure Valve Used in a Euro 6 Diesel Engine

Harvesting residual thermal energy from exhaust gases with thermoelectric generators is one of the paths that are currently being explored to achieve more sustainable and environmentally friendly means of transport. In some cases, thermoelectric generators are installed in a by-pass configuration to regulate the mass flow entering the thermoelectric generator. Some manufacturers are using throttle valves with electromechanical actuators and electronic control in the exhaust pipe to improve techniques for active control of pollutant emissions in reciprocating internal combustion engines, such as the exhaust gas recirculation. The above-mentioned circumstances have motivated the approach of this work: computational fluid dynamics (CFD) modelling of the operation of a throttle valve used for establishing adequate exhaust backpressure conditions to achieve the low pressure exhaust gas recirculation in Euro 6 engines. The aim of this model is to understand the flow control process with these types of valves in order to incorporate them in an exhaust system that will include two thermoelectric generators used to convert residual thermal energy into electrical energy. This work presents a computational model of the flow through the throttle valve under different temperatures and mass flow rates of the exhaust gas with different closing positions. For all cases, the values of the pressure drop were obtained. In all cases studied, the level of agreement between the modelled and experimental results exceeds 90%. The developed model has helped to propose a correlation to estimate the mass flow rate of exhaust gas from easily measurable quantities.

Study the Performance of a Dynamic Wall Heat Exchanger Using Computational Fluid Dynamics

Thermal systems in small devices like cooling electronic chips require efficient technologies with small diameter channels. These systems have laminar flow and disrupted boundary layers, leading to high pressure drop values. To ensure sufficient flow and limit coolant temperature, a possible solution is to dynamically deform one channel wall to mimic pumping and disrupt boundary layers, creating a peristaltic effect, called a dynamic heat exchanger. The aim of the present numerical study is to explore the effects of different operating parameters of the dynamic wall heat exchanger on the heat transfer performance. In our numerical study we varied different operating parameters (amplitude of vibration A, frequency f, minimum gap between upper and lower wall H and pressure difference P) and observed how it affects the performance of the dynamic wall heat exchanger in terms of mass flow rate of coolant (water) and heat transfer coefficient. A crucial finding is that the distribution of isotherms and streamlines is adequate, and heat transfer is significant when the relative amplitude is high. Additionally, this type of wall can generate substantial heat transfer even with minimal externally applied pressure.

Photocathodic protection of 304 stainless steel by coating muscovite/TiO2 heterostructure

The sol-gel method was used to prepare a series of muscovite/TiO2 heterostructures for photocathodic protection of 304 stainless steels (304SS). The effects of different mass ratio of muscovite to TiO2 (1:0.5, 1:1 and 1:1.5, denoted as MT-0.5, MT-1 and MT-1.5, respectively) on the crystal phase, grain size, light absorption properties and photoelectrochemical properties of TiO2 and muscovite/TiO2 heterostructures were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV–visible diffuse reflection spectroscopy (UV–vis DRS). The corrosion resistances and photoelectrochemical properties of the 304SS coated with muscovite/TiO2 heterostructures (304SS/MT) were studied through corrosion immersion test and electrochemical workstation in 3.5 wt% NaCl solution, respectively. In addition, Tafel curves and the electrochemical impedance spectroscopy (EIS) measurements were carried out to evaluate the photogenerated electron separation and transfer efficiency, and the interfacial charge transfer resistance of the 304SS and 304SS/MT electrodes, respectively. The time-dependent photocurrent responses of the MT-1 heterostructures demonstrated an enhanced photo-generated cathodic protection performance for 304SS substrates under visible light irradiation compared to TiO2. A photoinduced potential drop value for 304SS coated with MT-1 in 3.5 wt% NaCl solution was −0.54 V (vs. SCE). After immersion test, the corrosion image analyses of the 304SS, 304SS-MT, and 304SS coated with physically mixed muscovite/TiO2 samples showed that the 304SS/MT-1 exhibits the best corrosion resistances. After connecting with 304SS/MT-1 in 3.5 wt% NaCl solution, the corrosion current densities (icorr) of 304SS increased significantly under the white light illumination, indicating more photoinduced electrons were migrated from the muscovite/TiO2 heterostructures to the 304SS compared with that from pure TiO2. Furthermore, the simulated charge transfer resistance (Rct) of 304SS/MT-1 electrode is smaller than that of the 304SS electrode coated with TiO2, indicating that there exists an effective separation of the photogenerated electrons and holes, and a fast interfacial charge transfer after coating muscovite/TiO2 heterostructures.