Alexandria Engineering Journal (Sep 2024)
Entropy generation in peristaltic transport of bio-convective couple stress blood nanofluid with chemotactic microorganisms involving viscous dissipation and slip effects
Abstract
The aim of this work is to investigate the entropy generation and thermal characteristics of couple stress blood nanofluid on the peristaltic flow of gold nanoparticles being conveyed through an asymmetric channel through a porous medium. The distinctive characteristics of the nanoparticles such as their inspiring thermal conductivity make them a vital aspect of contemporary heat exchangers and nanotechnology. To create contrast-enhanced tracers intended for dynamic X-ray imaging of blood flows, gold nanoparticles have been incorporated into human red blood cells. The possibility for dynamic imaging with X-rays of blood flows provided by red blood cells in combination with gold nanoparticles has the potential to be advantageous for clinical applications. The main investigation focuses on the current situation of peristaltic motion with gyrotactic microorganisms in which the effects of Brownian motin, thermophoresis, thermal radiations, convective boundary conditions, wall slip, magnetic field, viscous dissipation and Joule heating are present. Lubrication approximations are implicit for interpreting the controlled partial differential equations. Numerical results were obtained using an effective Runge–Kutta method was developed using MATLAB software. This technique is commonly used to solve these problems since it is affordable, effective, and accurate to fourth order. Graphical interpretations are also used to calculate the effects of different physical parameters on temperature, concentration, velocity, dynamics of gyrotactic microorganisms, entropy generation, and Bejan number. Additionally, heat and mass characteristics of blood pumping were studied. According to certain results, entropy generation rises with the couple stress parameter. Furthermore, tables and bar charts are included to illustrate how certain data categories compare to earlier model-related research The findings indicated that gold nanoparticles are effective for drug transport as well as delivery systems due to their ability to control velocity using the thermophoresis and Brownian motion parameters. Gold nanoparticles additionally improve temperature dispersion, allowing it to damage cancer cells. In addition, the validity of findings is assured by reaching an agreement with earlier investigations. Flow, heat, and mass distributions are represented by streamlines, concentrations, and microorganisms. A graphical representation of the average Nusslet number and Sherwood number is also included. It is anticipated to provide a novel concept for improving the performance of controlling energy loss and improving the fluid’s thermal performance are both critical in varied engineering applications.
