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The Riemann problem in the quasi-one-dimensional approximation
M. V. Abakumova, Yu. P. Popovb, P. V. Rodionova a Faculty of Computational Mathematics and Cybernetics, Moscow State University, Moscow, 119991, Russia
b Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, Miusskaya pl. 4, Moscow, 125047, Russia
Abstract:
The classical one-dimensional Riemann problem is generalized to the quasi-one-dimensional case. A plane slotted channel with a discontinuous cross section is considered. The resulting exact self-similar solution is compared with numerical results obtained for a system of quasi-onedimensional and two-dimensional equations. It is shown that they are in good qualitative agreement and, for certain parameters, also agree well quantitatively.
Key words:
Riemann problem, quasi-one-dimensional approximation, flow in channels of variable cross section, self-similar solution, computational gas dynamics.
Received: 26.02.2015
Citation:
M. V. Abakumov, Yu. P. Popov, P. V. Rodionov, “The Riemann problem in the quasi-one-dimensional approximation”, Zh. Vychisl. Mat. Mat. Fiz., 55:8 (2015), 1391–1404; Comput. Math. Math. Phys., 55:8 (2015), 1356–1369
Linking options:
https://www.mathnet.ru/eng/zvmmf10253 https://www.mathnet.ru/eng/zvmmf/v55/i8/p1391
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Abstract page: | 391 | Full-text PDF : | 331 | References: | 69 | First page: | 15 |
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