Cycle-resolved computations of compressible vortical flows in automotive engines

Ken Naitoh; K. Kuwahara; E. Krause

doi:10.1016/B978-008044046-0.50256-6

Cycle-resolved computations of compressible vortical flows in automotive engines

Ken Naitoh, K. Kuwahara, E. Krause

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Compressible flows in a model engine with a square piston were analyzed during continuous engine cycles by using an accurate numerical simulation method and an orthogonal homogeneous grid without grid motions. The cycle-by-cycle differences, i.e., cyclic variations, in flow fields are examined in order to find more effective ways of stabihzing combustion. It is stressed that there are "stable domains", where the cyclic variations are relatively weak near the end of compression.

Original language	English
Title of host publication	Computational Fluid and Solid Mechanics 2003
Publisher	Elsevier Inc.
Pages	1047-1050
Number of pages	4
ISBN (Print)	9780080529479, 9780080440460
DOIs	https://doi.org/10.1016/B978-008044046-0.50256-6
Publication status	Published - 2003 Jun 2
Externally published	Yes

Keywords

Compressible turbulence
Cyclic variations
Engine
Multi-level formulation
Quasi-gridless approach
Stable domain

ASJC Scopus subject areas

Engineering(all)

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AB - Compressible flows in a model engine with a square piston were analyzed during continuous engine cycles by using an accurate numerical simulation method and an orthogonal homogeneous grid without grid motions. The cycle-by-cycle differences, i.e., cyclic variations, in flow fields are examined in order to find more effective ways of stabihzing combustion. It is stressed that there are "stable domains", where the cyclic variations are relatively weak near the end of compression.

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KW - Cyclic variations

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KW - Multi-level formulation

KW - Quasi-gridless approach

KW - Stable domain

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