含van der Waals气体的二维Euler方程半双曲曲面解的存在性和正则性
On the existence and regularity of solutions of semi-hyperbolic patches to 2-D Euler equations with van der Waals gas
摘要：
本文研究了含范德瓦尔斯气体的二维等熵欧拉方程半双曲型分片问题解的存在性和正则性。这种类型的解出现在翼型的跨音速流和Guderley反射中，并且在黎曼问题的数值解中也很常见。利用特征分解的思想和Bootstrap方法证明了该方程的整体光滑解的存在性，该解是一致$C^{1, \frac{1}{2}}$连续的。我们还证明了声波曲线是$C^{1, \frac{1}{2}}$连续的。此外，我们显示了形成的冲击波作为一个信封的积极特征之前，达到他们的音速点。
英文摘要：
This article is concerned in establishing the existence and regularity of solution of semi-hyperbolic patch problem for two-dimensional isentropic Euler equations with van der Waals gas. This type of solution appears in the transonic flow over an airfoil and Guderley reflection and is very common in the numerical solution of Riemann problems. We use the idea of characteristic decomposition and bootstrap method to prove the existence of global smooth solution which is uniformly $C^{1, \frac{1}{2}}$ continuous up to the sonic curve. We also prove that the sonic curve is $C^{1, \frac{1}{2}}$ continuous. Further, we show the formation of shock as an envelope for positive characteristics before reaching their sonic points.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
