导叶可调式液力变矩器流场模拟与PTV验证

为研究导叶可调式液力变矩器的内部流动特性,以循环圆直径为320 mm导叶可调式液力变矩器作为研究对象.采用计算流体动力学（CFD）方法对其不同开度、不同工况下的内部流动状态进行数值模拟,并对相应的透明模型进行粒子跟踪测速（PTV）试验验证.同一开度下,随着转速比的增加,可调导轮内部液流速度增加,液流方向与叶片进口方向的夹角增大;在制动工况时,叶片工作面有漩涡现象,而空载工况时,叶片非工作面有漩涡产生.对比试验与数值模拟内流场结果,发现后者可以比较准确地预测导叶可调式液力变矩器的内部流动特性.该结论为研究导叶可调式液力变矩器内部流动状态,预测外特性及其设计优化提供了方法和依据....

Full description

Saved in:
Bibliographic Details
Published in东北大学学报（自然科学版） Vol. 37; no. 3; pp. 397 - 402
Main Author 马文星 刘浩 刘春宝
Format Journal Article
LanguageChinese
Published 吉林大学 机械科学与工程学院,吉林 长春,130022 2016
Subjects
CFD
PTV
内流场
导叶可调式液力变矩器
工况
开度
CFD
working condition
内流场
internal flow field
PTV
hydrodynamic torque converter with adjustable guide vanes
工况
导叶可调式液力变矩器
PTV (particle tracking velocimetry)
开度
opening
CFD (computational fluid dynamics )
Online AccessGet full text
ISSN1005-3026
DOI10.3969/j.issn.1005-3026.2016.03.020

Cover

More Information
Summary:为研究导叶可调式液力变矩器的内部流动特性,以循环圆直径为320 mm导叶可调式液力变矩器作为研究对象.采用计算流体动力学（CFD）方法对其不同开度、不同工况下的内部流动状态进行数值模拟,并对相应的透明模型进行粒子跟踪测速（PTV）试验验证.同一开度下,随着转速比的增加,可调导轮内部液流速度增加,液流方向与叶片进口方向的夹角增大;在制动工况时,叶片工作面有漩涡现象,而空载工况时,叶片非工作面有漩涡产生.对比试验与数值模拟内流场结果,发现后者可以比较准确地预测导叶可调式液力变矩器的内部流动特性.该结论为研究导叶可调式液力变矩器内部流动状态,预测外特性及其设计优化提供了方法和依据.
Bibliography:hydrodynamic torque converter with adjustable guide vanes; internal flow field; working condition; opening; CFD （computational fluid dynamics ）; PTV （particle tracking velocimetry）
21-1344/T
In order to study the internal flow characteristics of a hydrodynamic torque converter with adjustable guide vanes, the hydrodynamic torque converter with 320 mm circular diameter was selected as the research subject. The computational fluid dynamics （CFD） method was applied to calculate the internal fluid flows at different openings and working conditions. Meanwhile, a prototype made by plexiglass was tested by PTV. Then, the internal flows were both obtained using CFD and PTV. Under the same opening, the flow velocity increased with the speed ratio, and the angle between the flow direction and the inlet angle direction of the adjustable guide vane increased as well. In the stall condition, the vortex phenomenon was observed near the vane＇ s working surface. However, at the no-load condition, the vortex phenomenon emerged
ISSN:1005-3026
DOI:10.3969/j.issn.1005-3026.2016.03.020