May 2012

Mixed convection flow of second grade fluid with variable heat flux past a vertically stretching flat surface

  In the present investigation, a numerical study of the flow and heat transfer analysis of viscoelastic second grade fluid due to heated, continuous stretching of a vertical sheet has been carried out. The stretching velocity is assumed to vary linearly with the distance measured from the leading edge. The surface heat flux is assumed to be varied in power of distance measured from the leading edge. The...

Author(s):   Mushtaq M., Muhammad A, Asghar S., Hossain M. A      

May 2012

Combined effects of Hall currents and slip condition on steady flow of a viscous fluid due to non-coaxial rotation of a porous disk and a fluid at infinity

  Hall effects on the steady hydromagnetic flow due to non-coaxial rotations of a porous disk and a fluid at infinity with slip condition at the boundary has been studied. An exact solution of the governing equations has been obtained. The combined effects of Hall current, slip condition and suction or blowing are examined. It is found that both the primary velocity and the secondary velocity decrease with...

Author(s):   S. Das, S. L. Maji, N. Ghara and R. N. Jana      

May 2012

Analysis study on surface and sub surface imperfections through magnetic particle crack detection for nonlinear dynamic model of some mining components

  This paper reviews magnetic particle crack detection (MPCD) in terms of principle, advantages, disadvantages and limitations. Different mine gear components are evaluated through MPCD technique and results are analyzed in terms of their suitability by applying acceptance/rejection norms followed by the mining industry in India. MPCD is now a widely acceptable technique in the world and has...

Author(s):   Umesh Singh, Mohan Singh and M. K. Singh