An isentropic flow algorithm with body fitted meshes

✍ Scribed by P. Glaister

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 327 KB
• Volume: 22
• Category: Article
• ISSN: 0898-1221
• DOI: 10.1016/0898-1221(91)90146-u

✦ Synopsis

AtmtractmAn efficient algorithm based on flux difference splitting is presented for the solution of the three-dimensinnal equations of isentropic flow in a g~neralised coordinate system, and with a general convex gas law. The scheme is based on solving linearised Riemann problems approximately and in more than one dimension incorporates operator splitting. The algorithm requires only one function evaluation of the gas law in each computational cell. The scheme has good shock capturing properties and the advantage of n,ing body-fitted meshes. Numerical results are shown for Mach 3 flow of air past a circular cylinder. Furthermore, the algorithm also applies to ,hallow water flows by employing the familiar gas dynamics analogy.