RT Journal Article
ID 3672b27b2c2e4f69
A1 Guria, Mrinmoy
A1 Das, B. K.
T1 Hydromagnetic Flow Due to Eccentrically Rotating Porous Disk and a Fluid at Infinity
JF International Journal of Fluid Mechanics Research
JO FMR
YR 2007
FD 2007-10-01
VO 34
IS 6
SP 535
OP 547
AB Hydromagnetic flow due to non-coaxial rotations of a porous disk and a fluid at infinity rotating about an axis passes through a fixed point in the presence of a uniform magnetic field is considered. An exact solution of the Navier-Stokes equations obtained for the velocity and temperature field when there is a uniform suction/blowing at the disk. It is seen that the main velocity component <i>f</i>/&Omega;<i>y</i><sub>1</sub> increases with increase in either magnetic parameter <i>M</i><sup>2</sup> or suction parameter <i>S</i>. On the other hand, the cross velocity component <i>g</i>/&Omega;<i>y</i><sub>1</sub> decreases with increase in either magnetic parameter or suction parameter. The flow has a boundary layer structure even in the presence of a blowing at the disk. It is observed that <i>f</i>/&Omega;<i>y</i><sub>1</sub> decreases while <i>g</i>/&Omega;<i>y</i><sub>1</sub> increases with increase in blowing parameter <i>S</i><sub>1</sub>. This implies that blowing at the disk causes reduction in the cross velocity of the flow. The expressions of the force and the torque exerted by the fluid on the porous disk is also obtained and discussed for several values of suction/blowing parameter and magnetic parameter. It is seen that no torque is exerted by the fluid on the disk. It is found that temperature profile <i>&#952;</i> decreases with increase in suction parameter whereas it increases with increase in magnetic parameter.
PB Begell House
LK http://dl.begellhouse.com/journals/71cb29ca5b40f8f8,4deeace075c04619,3672b27b2c2e4f69.html