PROPAGATION OF CONVERGING AND DIVERGING SHOCK-WAVES UNDER ISOTHERMAL CONDITION

In this article the flows of perfect gas behind converging and divergi ng strong shock waves under isothermal condition in the cases of spher ical and cylindrical symmetry are examined. A diverging shock wave is formed by energy supply according to a power law. These waves propagat e in a uniform medium at rest and all conservation laws hold at the fr onts of these shock waves. It was established that in the case of conv erging waves for any value of the ratios of specific heats gamma is an element of (1,3) the solution of the problem under consideration exis ts and is unique. When gamma greater than or equal to 3 the problem ha s more than one solution. In the case of diverging shock waves the sol ution exists and is unique for any gamma from the interval gamma is an element of (1,5/3] and any value of power in the energy input law.