# Prof. Dr. Motahar Reza

**Committee:**International Scientific Committee of Mathematical and Computational Sciences

**University:**National Institute of Science and Technology

**Department:**Department of Mathematics

**Research Fields:**Fluid Dynamics, Flows and Heat Transfer, Magnetohydrodynamics, Stability of Fluid Flows

## Publications

##### 2 Radiation Effect on MHD Casson Fluid Flow over a Power-Law Stretching Sheet with Chemical Reaction

**Authors:**
Motahar Reza,
neha sharma,
Rajni Chahal

**Abstract:**

This article addresses the boundary layer flow and heat transfer of Casson fluid over a nonlinearly permeable stretching surface with chemical reaction in the presence of variable magnetic field. The effect of thermal radiation is considered to control the rate of heat transfer at the surface. Using similarity transformations, the governing partial differential equations of this problem are reduced into a set of non-linear ordinary differential equations which are solved by finite difference method. It is observed that the velocity at fixed point decreases with increasing the nonlinear stretching parameter but the temperature increases with nonlinear stretching parameter.

**Keywords:**
Heat Transfer,
Radiation,
boundary layer flow,
nonlinear stretching,
Casson fluid

##### 1 Momentum and Heat Transfer in the Flow of a Viscoelastic Fluid Past a Porous Flat Plate Subject to Suction or Blowing

**Authors:**
Motahar Reza,
Anadi Sankar Gupta

**Abstract:**

An analysis is made of the flow of an incompressible viscoelastic fluid (of small memory) over a porous plate subject to suction or blowing. It is found that velocity at a point increases with increase in the elasticity in the fluid. It is also shown that wall shear stress depends only on suction and is also independent of the material of fluids. No steady solution for velocity distribution exists when there is blowing at the plate. Temperature distribution in the boundary layer is determined and it is found that temperature at a point decreases with increase in the elasticity in the fluid.

**Keywords:**
Heat Transfer,
viscoelastic fluid,
Flow past a porous plate

## Abstracts

##### 1 Radiation Effect on MHD Casson Fluid Flow over a Power-Law Stretching Sheet with Chemical Reaction

**Authors:**
Motahar Reza,
neha sharma,
Rajni Chahal

**Abstract:**

**Keywords:**
Heat Transfer,
Radiation,
boundary layer flow,
nonlinear stretching,
Casson fluid