Numerical Simulation of the Small Vortices in the Intake and Compression Processes of an Engine

Ken Naitoh, Kunio Kuwahara, Manfred Jeschke, Egon Krause

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)2719-2726
Number of pages8
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume57
Issue number540
DOIs
Publication statusPublished - 1991 Jan 1

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Keywords

  • Internal Combustion Engine
  • Numerical Analysis
  • Turbulence

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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