Thermal radiation and variable electrical conductivity effects on MHD peristaltic motion of Carreau nanofluids: Radiotherapy and thermotherapy of oncology treatment

Abstract

This study intends to investigate the influences of thermal radiation and variable electrical conductivity on the MHD peristaltic flow of Carreau nanofluids as the radiotherapy and thermotherapy are required for cancer treatment.Formulation of temperature-dependent electrical conductivity is introduced for the first time in the peristaltic literature. The related equations of momentum, mass, and concentration are reformulated using lubrication approximations (ie, tiny or zero Reynolds number and long wavelength). These simplified equations are solved numerically with the aid of Parameteric-NDSolve. Results for velocity, temperature, and concentration distributions are obtained in three-dimensional analytical forms. The streamline graphs are offered in the terminus, which elucidate the trapping bolus phenomenon. A "special case" of our results offered to get the solutions over certain contours for the behaviors of velocity, temperature, and nanoparticle concentration. It is found that the magnetic nanoparticles acquire more energy at high temperature, enabling them to destroy and damage tumors tissues (thermotherapy of oncology). Radiation is the reason for spreading the energy, that is, the energy of all the fluid nanoparticles does not continue with the same value.Heat Transfer-Asian Res. 2019;48:938-956. wileyonlinelibrary.com/journal/htj 938 |

Thermal slip and radiative heat transfer effects on electro‐osmotic magnetonanoliquid peristaltic propulsion through a microchannel

“…It is therefore beneficial to develop mathematical models of these processes to aid medical practitioners. The effects of thermal radiation and magnetic field on peristaltic motion of Carreau nanofluids has been elaborated by Hasona et al This study examined the influence of temperature‐dependent magnetic field and considered radiotherapy and thermotherapy techniques in modern medicine. The magnetohydrodynamic and thermal radiation characteristic of a nanofluid over a vertical surface (of relevance to magnetic thermal ablation therapy) was studied by Sudarasana Reddy et al, who also included the effects of a porous wall (an idealized model of human skin) and convective boundary conditions.…”

Mutual influences of a chemical reaction and thermal radiation on a peristaltic pump of synovial nanofluids in a 3D tapered asymmetric channel

“…The first work on peristalsis was conducted by Latham . Extensive experimental, numerical, and theoretical research has been deliberated on peristaltic pumping of non‐Newtonian/Newtonian fluids with dissimilar boundary conditions and geometries …”

Comments on the paper “Thermal radiation and variable electrical conductivity effects on MHD peristaltic motion of Carreau nanofluids: Radiotherapy and thermotherapy of oncology treatment”

“…(1) here σ T ( ) and σ 0 are the variable electrical conductivity and the electrical conductivity at a constant temperature, respectively, as defined in Hasona et al 1 T is the temperature, hence ϵ must have a unit of (temperature) −1 so that Equation (1) is correct. Hence, ϵ is dimensional and not dimensionless as the authors claimed.…”

“…In Hasona et al, 1 the momentum equation in x-direction in the dimensionless form (eq. 18 in Hasona et al 1 ) is as follows…”

“…Then the authors used eq. (19) on page 943, Hasona et al 1 to eliminate the pressure in Equation (3) to get eq. (22) on page 944, Hasona et al 1…”