**InternationaleJournals**

**EFFECTS OF MHD ON MOVING VERTICAL
PLATE IN THE PRESENCE OF THERMAL RADIATION AND CHEMICAL REACTION OF FIRST ORDER**

**J.Maheswari**^{a}, R.Muthucumaraswamy^{b} and J.Pandurangan^{c}

^{a}Department of
Mathematics, Velâ€™s College of Science, Pallavaram, Chennai 600 117.

^{b}Department of Applied Mathematics, Sri
Venkateswara College of Engineering, Sriperumbudur
602 105, India.*
Email: *msamy@svce.ac.in

^{c}Department of Applied sciences and Humanities, Anna University,
M.I.T Campus, Chennai-600044, India.

**Abstract**

An exact solution of MHD stokes problem for the flow of an electrically conducting incompressible , viscous fluid past an impulsively started infinite vertical plate in the presence of uniform temperature and mass diffusion is presented here, taking into account the homogeneous chemical reaction of first order and the effect of thermal radiation. The temperature near the plate is made raised to and the concentration level near the plate is also raised to . The fluid is considered is a gray, absorbing emitting radiation but a non- scattering medium. The dimensionless governing equations are solved using Laplace-Transform technique. The velocity profiles are studied for different physical parameters in the form of graphs. It is observed that the velocity decreases with increasing the value of the chemical reaction parameter or magnetic field parameter. But this effect is reversed with respect to time.

**Key
words** :gray, radiation, magnetic
field, chemical reaction, vertical plate.**
Mathematics Subject
Classification:** 76R10

**International
eJournal of Mathematics and Engineering**

**Volume** 2,
**Issue** 2, **Pages**: 974 - 980