DEFINITION OF TURBULENCE IN IN-CYLINDER FLOW-FIELDS

被引：0
作者：
MORIYOSHI, Y
KAMIMOTO, T
YAGITA, M
机构：
[1] TOKYO INST TECHNOL,DEPT MECH ENGN,MEGURO KU,TOKYO 152,JAPAN
[2] YAMAGATA UNIV,DEPT MECH SYST ENGN,YONEZAWA,YAMAGATA 992,JAPAN
来源：
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING | 1993年 / 36卷 / 01期
关键词：
INTERNAL COMBUSTION ENGINE; NUMERICAL ANALYSIS; TURBULENT FLOW; TURBULENCE MODEL;
D O I：
10.1299/jsmeb.36.172
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The definition of turbulence of in-cylinder flow fields has been an important issue for researchers working on in-cylinder gas motion. This study proposes a definition of the ''turbulence component'' in both the calculation and measurement. Also, a new method to make a precise comparison between the calculation and measurement is presented theoretically. This method implies changing the coefficient, C(D), which is included in expressions for turbulence energy, its dissipation rate and turbulence length scale. Employing this method demonstrates the possibility of reducing the ambiguity of the cut-off frequency method to determine turbulence experimentally and also of improving the reliability of the calculation code.
引用
收藏
页码：172 / 177
页数：6
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