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Numerical Analysis of Pressure Drop and Cavitation Effects in Vehicle Steering System
Technical Paper
2006-01-3560
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the pressure hose, pressure of fluid is decreasing due to many factors such as friction resistance (f) in inner wall, geometrical resistance factors like circular deformation rate (C.D.R), bending degree, curvature, sectional expansion-contraction ratio and etc.. And the fluid in return hose experiences a high pressure condition within a short time, when sudden impact is delivered on the gear box. At this time, cavities appear in lower static pressure region like inner radius of a bended pipe and hose system at this moment. That happens, because oil pressure remains lower than saturated vapor pressure at specific temperature. These cavities cause pressure drop, noise, vibration and damage hydraulic components. Those factors make both performance of vehicle movement and fuel-consumption rate worse. In experiment, pressure drop, vapor pressure and many properties of power steering fluid are measured. And we verified pressure drop coefficients for various shapes and cavitation phenomenon by using C.F.D (Computational Fluid Dynamics) code and compared this with pressure drop test. Therefore, objective of this paper is to reduce energy consumption of steering system as well as to find a design technique with numerical evaluation for good performance.
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Citation
Lee, G., Kim, T., Jeon, S., and Kim, J., "Numerical Analysis of Pressure Drop and Cavitation Effects in Vehicle Steering System," SAE Technical Paper 2006-01-3560, 2006, https://doi.org/10.4271/2006-01-3560.Also In
References
- Singhal A. K. Li H. Y. Athavale M. M. Jiang Y. Mathematical Basis and Validation of the Full Cavitation Model ASME FEDSM'01 New Orleans, Louisiana 2001
- Jeon S. G. Lee G. H. Kim J. H. Hwang H.J “A Study on Improvements of Automobile Hydraulic Wiring Design in Consideration of Pressure Loss” Korea Society of Automotive Engineers 3 1316 1322 2005
- Jeon S. G. Lee J. H. Kim J. H. Kim H.S “A study on Improvements of Bending Stress and Circular Deformation Rate of Pipe Bending Procedure by Numerical Simulation” Korea Society of Automotive Engineers 3 1316 1322 2004
- Jeon S.G. Kim J.H. S hin J.Y. Lee S.G. “A Study on Improvements of Residual Stress of Pipe Bending By X-Ray Diffract-meter Test” Korea Society of Automotive Engineers 3 1111 1116 2004
- Mechanical Metallurgy Dieter George E. Third 22 28
- Fung Y. C. “A First Course in Continuum Mechanics” Third
- Dieter George. E. University of Maryland Mechanical Metallurgy Third Mcgraw Hill Publishing Company
- Giese T. Laurien E. “A Three Dimensional Numerical Model for the Analysis of Pipe Flows with Cavitations” Institute for Nuclear Technology and Energy Systems (IKE)
- Shoemaker D.P. Garland C.W. Nibler J.W. “Experiments in physical Chemistry” 5th McGraw-Hill New York 1989
- Sarin V. B. “The Steady Laminar Flow of an Elastic-Viscous Liquid in a Curved Pipe of Varying Elliptic Cross Section” Center for Atmospheric and Fluid Sciences Indian Institute of Technology
- Pedley T. D. “Fluid mechanics of Large Vessels Cambridge University Press London 1980
- Takami T. Sodou K. “Flow through curved pipes with elliptical cross section Bull of JSME27 228 1176 1181 1984
- Yamatomo Kyoji Alam Md. Mahmud Yasuhara Junich “Flow through a rotating helical pipe with circular cross-section” Department of Mechanical Engineering, Faculty of Engineering, Okayama University Okayama 700-8530, Japan
- Galdi G.P Robertson A.M “On flow of a Navier-Stokes fluid in curved pipes Department of mechanical Engineering, University of Pittsburgh 15621 Pittsburgh, PA, USA
- White Frank M “Fluid Mechanics” fifth Mcgraw Hill Press
- Jams E. A. Haberman John William L. “Fluid Dynamics” The Ohio State University Columbus Ohio. U.S.A.
- “Fluent Advanced Technical Notes, U.D.F” ATES
- Brown F.T. Trans. ASME 1962 547 553