Modification of the K-ε turbulence model for in-cylinder gas flow

Hiroyuki Kido, Kenshiro Nakashima, Hiroshi Tajima, Toshiaki Kitagawa

研究成果: ジャーナルへの寄稿学術誌査読

3 被引用数 (Scopus)


A modification of the values of three constants C1, C2 and C3 in the standard K-ε turbulence model is proposed, based on the empirical law of decay obtained for nearly homogeneous in-cylinder turbulence. Since the decay exponent of Reynolds numbers for in-cylinder turbulence is found to be different from that for steady ducted flow just behind a turbulence-generating grid, the C2 value is modified first, followed by the C1 and C3 values, which depend on the C2 value. The derived C2 value of 1.40 is smaller than that in the standard K-ε turbulence model, but the C1 value, 1.40 is close to that of the standard one. The C3 value, -1.05, is very close to the recommended value by Morel et al. for the case of a unidirectional axial compression.

ジャーナルJSME International Journal, Series B: Fluids and Thermal Engineering
出版ステータス出版済み - 2月 1 1989

!!!All Science Journal Classification (ASJC) codes

  • 機械工学
  • 物理化学および理論化学
  • 流体および伝熱


「Modification of the K-ε turbulence model for in-cylinder gas flow」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。