Dr. Om Prakash Keshri is an Assistant Profesor in the Department of Mathematics, Under School of Engineering, Dayananda Sagar University, Harohalli campus, Bengaluru, Karnataka since December 2023. Dr. Keshri completed his PhD from Central University of Rajasthan, Ajmer in 2020. He completed his M.Sc. (Mathematics and Computing) and M.Phill. (Applied Mathematics) from IIT (ISM) Dhanbad, Jharkhand in 2012 and 2014 respectively. He has 5 yrs of teaching and 12 yrs of research experience. He published five research articles in reputed pre-reviewed SCI/SCIE/Scopus index journals. His core area of research is Hydeodynamic Instability, Nonlinear Analysis, Dynamical System etc.
Study of Weakly nonlinear Mass transport in Newtonian Fluid with Applied Magnetic Field under Concentration/Gravity modulation Om Prakash Keshri, Vinod K. Gupta, Anand Kumar Nonlinear Engineering, 2019 In the present paper, a weakly nonlinear stability analysis is used to analyze the effect of time-periodic concentration/gravity modulation on mass transport. We have considered an infinite horizontal fluid layer with constant appliedmagnetic flux salted from above, subjected to an imposed time-periodic boundary concentration (ITBC) or gravity modulation (ITGM). In the case of ITBC, the concentration gradient between the plates of the fluid layer consists of a steady part and a time-dependent oscillatory part. The concentration of both walls is modulated. In the case of ITGM, the gravity fleld consists of two parts: a constant part and an externally imposed time periodic part, which can be realized by oscillating the fluid layer. We have expanded the infinitesimal disturbances in terms of power series of an amplitude of modulation, which is assumed to be small. Ginzburg-Landau equation is derived for dinding the rate of mass transfer. Effect of various parameters on the mass transport is also discussed. It is found that the mass transport can be controlled by suitably adjusting the frequency and amplitude of modulation.
Effect of rotational speed modulation on weakly nonlinear magneto convective heat transfer with temperature-dependent viscosity VK Gupta, OP Keshri, A Kumar Chinese Journal of Physics 72, 487-498 , 2021 2021 Citations: 9
G-jitter effect on mass transport in electrically conducting Newtonian fluid A Kumar, OP Keshri, VK Gupta Chinese Journal of Physics 71, 224-234 , 2021 2021 Citations: 10
Effect of internal heat source on magneto-stationary convection of couple stress fluid under magnetic field modulation OP Keshri, A Kumar, VK Gupta Chinese journal of physics 57, 105-115 , 2019 2019 Citations: 37
Study of weakly nonlinear mass transport in Newtonian fluid with applied magnetic field under concentration/gravity modulation OP Keshri, VK Gupta, A Kumar Nonlinear Engineering 8 (1), 513-522 , 2019 2019 Citations: 17
Magento-solutal convection in Newtonian fluid layer with solutal modulated boundaries OP Keshri, A Kumar, VK Gupta International Journal of Non-Linear Mechanics 107, 86-93 , 2018 2018 Citations: 15
MOST CITED SCHOLAR PUBLICATIONS
Effect of internal heat source on magneto-stationary convection of couple stress fluid under magnetic field modulation OP Keshri, A Kumar, VK Gupta Chinese journal of physics 57, 105-115 , 2019 2019 Citations: 37
Study of weakly nonlinear mass transport in Newtonian fluid with applied magnetic field under concentration/gravity modulation OP Keshri, VK Gupta, A Kumar Nonlinear Engineering 8 (1), 513-522 , 2019 2019 Citations: 17
Magento-solutal convection in Newtonian fluid layer with solutal modulated boundaries OP Keshri, A Kumar, VK Gupta International Journal of Non-Linear Mechanics 107, 86-93 , 2018 2018 Citations: 15
G-jitter effect on mass transport in electrically conducting Newtonian fluid A Kumar, OP Keshri, VK Gupta Chinese Journal of Physics 71, 224-234 , 2021 2021 Citations: 10
Effect of rotational speed modulation on weakly nonlinear magneto convective heat transfer with temperature-dependent viscosity VK Gupta, OP Keshri, A Kumar Chinese Journal of Physics 72, 487-498 , 2021 2021 Citations: 9
