A numerical study of the effects of swirl chamber passage hole geometry on the flow characteristics of a swirl chamber type diesel engine

被引：0

作者：

Choi, Gyeung Ho

Kim, Sung Hoon

Kwon, Tae Yun

Yun, Ju Hee

Chung, Yon Jong

Ha, Chang Uk

Lee, Jong Soon

Han, Sung Bin

机构：

[1] Induk Inst Technol, Dept Mech Engn, Seoul 139749, South Korea

[2] Keimyung Univ, Dept Mech & Automot Engn, Taegu, South Korea

[3] Keimyung Univ, Grad Sch Automot Engn, Taegu, South Korea

[4] Daegu Mirae Coll, Dept Automot Engn, Taegu, South Korea

[5] Daedong Ind Co Ltd, R&D Ctr, Changnyung Kun, South Korea

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING | 2006年 / 220卷 / D4期

关键词：

computational fluid dynamics; moving grid; swirl ratio; tumble ratio; cross-tumble ratio; turbulence kinetic energy; swirl chamber; passage hole; swirl flow;

D O I：

10.1243/09544070D18804

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This research simulates the in-cylinder flow of a swirl chamber type diesel engine using a computational fluid dynamics (CFD) code and reveals the generation and distortion of swirling, tumbling vortices and their influence on turbulence kinetic energy depending on the shape, angle, and area of the jet passage. The CFD code was applied to the intake and compression processes. Results show that flow characteristics were affected by inflow velocity, which depends on the change in the jet passage shape. The swirl ratio was increased as a result of a decrease in the jet passage area. Turbulence kinetic energy was generated by mixing effects of the swirling and tumbling vortices.

引用

页码：459 / 470

页数：12

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