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The Fluid Induced Vibration Analysis on an Integrated Exhaust Manifold
Technical Paper
2013-01-0937
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
With its advantages on cost and performance, the integrated exhaust manifold (casting with the turbine) is being used on more vehicles by auto makers. Generally, when compared with the divided exhaust manifold, the integrated exhaust manifold stands for higher vibratory excitation from gas dynamics.
In this paper, the gas dynamics excitation has been computed through the GD (gas dynamics) software GT-Power which calculates the exhaust pipe surface pressure, and CFD code Star-CCM+ which calculates the turbine blade force. And the response of manifold has been solved under this excitation. On the other hand, the mechanical excitation has been computed through the MBD (multi-body dynamics) platform AVL-Excite-PU, and the responses under the gas excitation plus the mechanical load have been studied in order to analyze the effects of the fluid excitation on an integrated manifold.
The results show that the pressure fluctuation has more energy input than blade force, but both of them are negligible to the exhaust manifold vibration.
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Citation
Deng, B., Liu, J., Feng, R., and Zhang, D., "The Fluid Induced Vibration Analysis on an Integrated Exhaust Manifold," SAE Technical Paper 2013-01-0937, 2013, https://doi.org/10.4271/2013-01-0937.Also In
References
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- Ffowcs Williams J E , Hawkings D L. Sound generation by turbulence and surfaces in arbitrary motion Philosophical transactions of the royal society of London 1969 264 A (1151) 321 342
- STAR-CCM+ User Guide 2010
- AVL Impress Version 1.4.4 User Guide Jan. 2008