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CFD Simulation by Automatically Generated Tetrahedral and Prismatic Cells for Engine Intake Duct and Coolant Flow in Three Days
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 06, 2000 by SAE International in United States
Annotation ability available
Event: SAE 2000 World Congress
CFD analysys with automatically generated mesh has been carried out by tetrahedral cells. This type of Computational Fluid Dynamics (CFD) method requires larger number of cells compared to those based on hexahedral cells. Also its cell arrangement on the wall is important to get correct wall friction effect in case wall function model is used.
The purpose of this study is to investigate the influence of tetrahedral and prismatic cell size and thickness on the pressure loss and the heat transfer coefficient in the case of engine intake duct and coolant flow CFD. We found the prismatic cell thickness and layer number on wall has improved Y+ distribution and pressure drop accuracy at intake duct. Also heat transfer coefficient of coolant flow simulation accyracy is improved.
We carried out automatic mesh generation and high speed computing by Windows personal computer. For example, mesh generation time with prismatic element of 1.8 million cells is finished in 2 hours by Pentium III 550MHz. Flow analysis time is about 17 hours within 200 MB memory. Also we compared commercial CFD codes to invesigate which code is suitable for practical use as design tool to shorten lead time and to reduce cost.
CitationOkumura, K., "CFD Simulation by Automatically Generated Tetrahedral and Prismatic Cells for Engine Intake Duct and Coolant Flow in Three Days," SAE Technical Paper 2000-01-0294, 2000, https://doi.org/10.4271/2000-01-0294.
- Okumura Kenji ‘Practical Use of CFD for Air Conditioning Duct and Defroster Designing’ JSAE Proceedings, 9739796 1997
- Sato Yuji ‘Analysis of The Airflow in Air Conditioning Duct Using Numerical Calculation’ JSAE Proceedings, 9301610 1993
- Fischer Dietmar ‘Airflow Simulation Through Automotive Blowers Using Computational Fluid Dynamics’ SAE 950438 1995
- Shen Fred Z. ‘HVAC Plenum Design Analysis’ SAE 950113 1995
- Matsumoto Masanoori ‘Investigation of Design Method for Air Conditioning System using CAE’ JSAE Proceedings,9739796 1997
- Katoh ‘Engine Coolant Flow Simulation using Automatic Volume Meshing’ JSAE Proceedings, 9933411 1999
- Lowe et al. ‘A New Generation of tool for Accurate Thermo - Mechanical Finite Element Analysis of Engine Components’ SAE paper, 920681 1992
- Sandford et al. ‘Engine coolant Flow Simulation correlation Study’ SAE paper, 930068 1993
- Katoh et al. ‘Conjugate Simulation with Coolant Flow, Heat Transfer and Heat Deformation in the Engine’ FISITA 96 1996