Numerical Simulation of the Small Vortices in the Intake and Compression Processes of an Engine
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概要
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The turbulence-generating mechanism in the intake and compression processes of an engine with a square cylinder is investigated by performing a three-dimensional numerical simulation. Emphasis is placed on the influences of the intake turbulence and the compression effect on the TDC (Top Dead Center) turbulence. The compressible Navier-Stokes equations are solved without any explicit turbulence models. The employed numerical algorithm is an extended version of the ICE method, and the third-order upwind scheme is employed for the convective terms. The obtained computational results agree well with the experimental visualization using freon as the working fluid under the condition with a Mach number in excess of 0.5. It is shown that the drastic transition to turbulence near TDC is grasped by computations using this numerical method.
- 一般社団法人日本機械学会の論文
- 1992-11-15
著者
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Krause E
Aerodynamisches Institut Rwth Aachen
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Jeschke Manfred
Aerodynamisches Institut Rwth Aachen
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Kuwahara Kunio
Institute Of Astronautical Science Jaxa
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Krause Egon
Aerodynamisches Institut Rwth Aachen
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Naitoh K
Nagoya Inst. Technol. Nagoya Jpn
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Naitoh Ken
Nissan Research Center
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