reference. Steger, J.L.: Implicit Finite Difference Simulation of Flows About Two-Dimensional Arbitrary Geometries. AIAA Journal, 17 (1978), pp. 679-686.[cfd-r2-33]
Steger关于二维任意外形绕流隐式有限差分模拟的论文，薄剪切层近似的参考来源之一。