In this thesis, we consider a solid spherical piston in a quiescent polytropic gas, expanding at a constant speed, pushing out the undisturbed gas ahead of it, and then causing shock waves.

• 中文摘要这篇论文中我们将要探讨球面活塞问题。我们考虑一个放置在静止气体中的实心球面活塞，当它以等速扩张，推动前方没有受到扰动的气体时产生震波。