Liquid-cooled exhaust manifolds are widely used in turbocharged diesel engines. The large temperature gradient in the overall manifold will cause remarkable thermal stress. The objective of the project is to modify the current design for preventing the high thermal stress and extending the life span of the manifold. To achieve the objective, the combination between Computational Fluid Dynamics (CFD) with Finite Element (FE) is introduced. Firstly, CFD analysis is conducted to obtain temperature distribution, providing boundary conditions of the thermal load on the FE mesh. Afterward, FE analysis is carried out to determine the thermal stress. The interpolation of the temperature data from CFD to FE is done by Binary Space Partitioning (BSP) tree algorithm. To accurately quantify the thermal stress, nonlinear material behavior is considered. The computational results are compared with that of Number of Transfer Units (NTU) method, and are further verified with industrial experiment data. All these comparisons indicate that present investigation reasonably predicts the thermal stress behavior. Based on the results, recommendations are given to optimize the manifold design.
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ASME 2008 International Mechanical Engineering Congress and Exposition
October 31–November 6, 2008
Boston, Massachusetts, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4871-5
PROCEEDINGS PAPER
Numerical Simulation of Thermal Stress for a Liquid-Cooled Exhaust Manifold
Dui Huang,
Dui Huang
Purdue University - Calumet, Hammond, IN
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Ahmed Juma,
Ahmed Juma
Purdue University - Calumet, Hammond, IN
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Curtis M. Schreiber,
Curtis M. Schreiber
Purdue University - Calumet, Hammond, IN
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Xiuling Wang,
Xiuling Wang
Purdue University - Calumet, Hammond, IN
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Chenn Q. Zhou
Chenn Q. Zhou
Purdue University - Calumet, Hammond, IN
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Dong Fu
Purdue University - Calumet, Hammond, IN
Dui Huang
Purdue University - Calumet, Hammond, IN
Ahmed Juma
Purdue University - Calumet, Hammond, IN
Curtis M. Schreiber
Purdue University - Calumet, Hammond, IN
Xiuling Wang
Purdue University - Calumet, Hammond, IN
Chenn Q. Zhou
Purdue University - Calumet, Hammond, IN
Paper No:
IMECE2008-68892, pp. 725-733; 9 pages
Published Online:
August 26, 2009
Citation
Fu, D, Huang, D, Juma, A, Schreiber, CM, Wang, X, & Zhou, CQ. "Numerical Simulation of Thermal Stress for a Liquid-Cooled Exhaust Manifold." Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C. Boston, Massachusetts, USA. October 31–November 6, 2008. pp. 725-733. ASME. https://doi.org/10.1115/IMECE2008-68892
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