A Study of Thermal Stability on Dusty Couple - Stress Fluid in Hydromagnetic Field with Rotation

摘要

The stability analysis of a Dusty couple - stress fluid heated from below with Magnetic field and Rotation is considered. By following the linear stability theory and normal mode technique, the dispersion relation is obtained. For the case of stationary convection, dust particles are found to have a destabilizing effect on the system, whereas the rotation is found to have stabilizing effect on the system. Couple - stress and magnetic field have dual character to its stabilizing effect in the absence of magnetic field and rotation. The oscillatory modes are introduced due to the presence of magnetic field and rotation in the system. The results are presented through graphs in ease case. Graphs have been plotted by giving numerical values to the parameters to depict the stability characteristics.