NUMERICAL STUDY OF TURBULENT IN-CYLINDER FLOW DURING MOTORING UTILIZING A GENERAL CURVILINEAR COORDINATE SYSTEM

被引：3

作者：

CHIU, CP

WU, TS

机构：

[1] Department of Mechanical Engineering, National Cheng Kung University, Tainan

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 1990年 / 11卷 / 04期

关键词：

ALGEBRAIC GRID GENERATION TECHNIQUE; DEFORMED BOUNDARY; IN-CYLINDER AIR MOTION; UNSTEADY TURBULENT FLOW;

D O I：

10.1016/0142-727X(90)90054-F

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A finite-volume numerical calculation method is presented to predict the flow field at unsteady, turbulent levels in a motoring reciprocating engine. An algebraic grid generation technique is used to map the complex fluid domain, on which the cylinder head is a deformed boundary, onto a rectangle for every time step. Hence the metric of the coordinate transformation can be determined by direct analytic differentiation. The model gives a good account of the axial, radial, and swirl velocity components and engine turbulence by means of a two-equation model of turbulence and wall functions. Effects of the shapes of both cylinder head and grid distribution on in-cylinder air motion are investigated.

引用

页码：303 / 310

页数：8

共 20 条

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