DocumentCode :
3697825
Title :
Research on mechanism of drag reduction and efficiency improvement of hydrodynamic torque converter with bionic non-smooth surfaces
Author :
Liu Chunbao;Chai Bosen;Liu Changsuo;Ma Wenxing
Author_Institution :
School of Mechanical Science and Engineering, Jilin University, Changchun 13002, China
fYear :
2015
Firstpage :
1361
Lastpage :
1367
Abstract :
Inspired by the successful applications of biological non-smoothness, the bionic non-smooth surface was integrated into the design of hydrodynamic torque converter (TC) to conduct the research on the drag reduction and efficiency improvement, the concaves model on non-smooth surface were established according to our analysis with the mechanisms underlying non-smooth unit mediated fluid drag reduction. The friction, shear and turbulent viscous in the concaves and adjacent areas on bionic non-smooth pump surface were found to decline after TC was subjected to transient numerical simulation tests using computational fluid dynamics (CFD) analysis method. The results showed that the head and efficiency of bionic pump was improved, compared with the original model, as well as the over performance of TC, the availability of the proposed design method could be thereby confirmed. As a kind of "green drag reduction" method, the bionic non-smooth surface was firstly applied to TC in this paper, the correlation reflected from non-smooth shell surface of pump can be provided for the design involving the drag reduction on surfaces of other internal components in TC.
Keywords :
"Surface morphology","Mathematical model","Drag","Biological system modeling","Surface resistance","Friction"
Publisher :
ieee
Conference_Titel :
Fluid Power and Mechatronics (FPM), 2015 International Conference on
Type :
conf
DOI :
10.1109/FPM.2015.7337333
Filename :
7337333
Link To Document :
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