A PACKAGE FOR COMPUTING GAS DYNAMIC FLOWS IN VARIABLE CROSS-SECTION TUBES

Yu. N. Deryugin, I. F. Kazakova, М. M. Proshin, L. I. Sizova, B. P. Tikhomirov
VANT. Ser. Metodiki i Programmy Chislennogo Resheniya Zadach Matematicheskoy Fiziki 1988. Вып.1. С. 65-69.

      We describe a package designed to solve numerically 1-D nonstationary problems in gas dynamics involved in nonuniform flow studies within variable cross-section tubes with jumps and perforated membranes. The calculations are performed in moving coordinates by explicitely locating the jumps and calculating through shock waves. Integrating the main equations uses the Godunov, Lax-Wendroff, McCormack schemes and a modified Godunov method. The package capabilities are exemplified by six problems.