Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 549-558 |
| Number of pages | 10 |
| Journal | JSME International Journal, Series 2: Fluids Engineering, Heat Transfer, Power, Combustion, Thermophysical Properties |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1992 |
| Externally published | Yes |
ASJC Scopus subject areas
- Mechanical Engineering
- Physical and Theoretical Chemistry
- Fluid Flow and Transfer Processes