Abstract
The turbulence-generation 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 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 agreed well with the experimental visualization using freon as the working fluid under the Mach-number condition over 0.5. It is shown that the drastic transition to turbulence near TDC is grasped by computations using this numerical method.
Original language | English |
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Pages (from-to) | 2719-2726 |
Number of pages | 8 |
Journal | Transactions of the Japan Society of Mechanical Engineers Series B |
Volume | 57 |
Issue number | 540 |
DOIs | |
Publication status | Published - 1991 |
Externally published | Yes |
Keywords
- Internal Combustion Engine
- Numerical Analysis
- Turbulence
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering