SPHERICAL SHOCK GENERATED BY A MOVING PISTON IN A NONIDEAL GAS UNDER GRAVITATION FIELD WITH MONOCHROMATIC RADIATION AND MAGNETIC FIELD

Similarity solutions for the propagation of a spherical shock wave generated by a moving piston in a nonideal gas under the infl uence of a gravitational fi eld and azimuthal magnetic fi eld with monochromatic radiation are obtained. The gravitational fi eld is due to a central mass at the origin, i.e., the Roche model is valid. The gravitational effect of the gas itself is neglected in comparison with the attraction of the central mass at the origin. We considered that the radiation fl ux moves through an electrically conducting nonideal gas with constant intensity and energy is absorbed only behind the shock which moves in the direction opposite to the radiation fl ux. The results are discussed and compared with ones for a perfect gas, as well as for the cases of the infl uence of the gravitational fi eld and of the absence of this fi eld. The effect of the variations of the Alfven–Mach number, gravitational parameter, adiabatic exponent, and of the parameter of gas nonidealness are discussed in details.
   
Author:  G. Nath
Keywords:  shock wave, monochromatic radiation, gravitational fi eld, magnetic fi eld, nonideal gas, interstellar medium
Page:  911