HYDROMAGNETIC FLOW PAST AN IMPULSIVELY
STARTED INFINITE VERTICAL PLATE WITH VARIABLE
TEMPERATURE AND MASS DIFFUSION

R. Muthucumaraswamya and A. Vijayalakshmib 

UDC 536.25

An exact solution of the MHD Stokes problem for the flow 
of an electrically conducting, incompressible, viscous fluid past 
an impulsively started infinite vertical plate in the presence of 
variable temperature and mass diffusion is obtained. The dimensionless 
governing equations are solved using the Laplace-transform technique. 
The plate temperature and the concentration level near the plate increase 
linearly with time. The solutions for the velocity and skin friction 
are obtained for different magnetic field parameters and multiple 
buoyancy effects for aiding and opposing flows. It is observed that 
the velocity decreases in the presence of a magnetic field as compared 
to its absence and that the skin friction increases in the presence 
of aiding flows and decreases with opposing flows.

a Department of Information Technology, Sri Venkateswara 
College of Engineering, Sriperumbudur 602105, India; 
b Department of Applied Mathematics, Sri Venkateswara 
College of Engineering, Sriperumbudur 602105, India; 
e-mail: msamy@svce.ac.in. Published in Inzhenerno-Fizicheskii 
Zhurnal, Vol. 78, No. 2, pp. 131-135, March-April, 2005. Original 
article submitted August 27, 2003.