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Since 1978
Published in Sarov (Arzamas-16), Nizhegorodskaya oblast |
RUSSIAN FEDERAL
NUCLEAR CENTER -
ALL-RUSSIAN RESEARCH INSTITUTE
OF EXPERIMENTAL PHYSICS |
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 Русский |  English
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ON THE ONE FORM OF ARTIFICIAL VISCOSITY
V. Yanilkin, O. O. Toporova, V. Yu. Kolobyanin, G. S. Firsova
VANT. Ser.: Mat. Mod. Fiz. Proc 2009. Вып.3. С. 45-57.
The paper describes investigations of the impact of various von Neumann—Richtmyer viscosity forms on simulation results for a number of typical flows, for which exact solutions are available. A new 2D viscosity form developed within EGAK technique is presented. As test computations show, the viscosity proposed in the paper improves the simulation accuracy for a number of flows in comparison with the classic von Neumann—Richtmyer viscosity (both scalar and oriented in the moving shock wave direction). The specific feature of this new viscosity consists in; that it is simple and easy to implement in codes.Keywords: EGAK technique, von Neumann—Richtmyer viscosity, characteristic mesh size, shock wave.
| ON THE ONE FORM OF ARTIFICIAL VISCOSITY
V. Yanilkin, O. O. Toporova, V. Yu. Kolobyanin, G. S. Firsova
VANT. Ser.: Mat. Mod. Fiz. Proc 2009. Вып.3. С. 45-57.
The paper describes investigations of the impact of various von Neumann—Richtmyer viscosity forms on simulation results for a number of typical flows, for which exact solutions are available. A new 2D viscosity form developed within EGAK technique is presented. As test computations show, the viscosity proposed in the paper improves the simulation accuracy for a number of flows in comparison with the classic von Neumann—Richtmyer viscosity (both scalar and oriented in the moving shock wave direction). The specific feature of this new viscosity consists in; that it is simple and easy to implement in codes.Keywords: EGAK technique, von Neumann—Richtmyer viscosity, characteristic mesh size, shock wave.
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