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Investigation of the Buoyancy Driven Flow in a Simplified Underhood - Part II, Numerical Study
Technical Paper
2006-01-1607
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes the numerical results for a simplified underhood buoyancy driven flow. The simplified underhood geometry consists of an enclosure, an engine block and two exhaust cylinders mounted along the sides of the engine block. The flow condition is set up in such a way that it mimics the buoyancy driven flow condition in the underhood environment when the vehicle is parked in a windbreak with the engine shut down. The experimental measurements for temperature and velocity of the same configuration were documented in the Part I of the same title. Present study focuses on the numerical issues of calculating temperature and flow field for the same flow configuration. The predicted temperature and velocity were compared with the available measured data. The mesh sizes, mesh type and the orders of spatial and temporal accuracy of the numerical setup are discussed. The numerical predictions reveal a complex flow structure under the buoyancy condition, and the results show very favorable comparisons with the experimental velocity and temperature measurements at the mid-plane.
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Authors
Citation
Chen, K., Johnson, J., Merati, P., Cooper, N. et al., "Investigation of the Buoyancy Driven Flow in a Simplified Underhood - Part II, Numerical Study," SAE Technical Paper 2006-01-1607, 2006, https://doi.org/10.4271/2006-01-1607.Also In
References
- Franchetta, M. Suen, K. O. Williams, P.A. Bancroft, T. G. “Investigation into Natural Convection in an Underhood Model Under Heat Soak Condition” SAE Technical Paper Series, 2005-01-1384 2005
- GMR report General Motors Research & Development 1990
- Merati, P Cooper N Leong Chen, K-H Johnson J. “Investigation of the Buoyancy Driven Flow in A Simplified Underhood - Part I, PIV and Temperature Measurements” SAE Paper No. 06-HX-21 2006
- Merati, P Cooper N Leong, C. H. O'Neill A. Hulway, B “Particle Image Velocimetry (PIV) and Temperature Measurement Test for Underhood Buoyancy Driven Flow” Phase I Report Department of Mechanical and Aeronautical Engineering, Western Michigan University Dec. 16 2004
- Fluent 6.2.16 Fluent Inc. 2005