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3D CFD Simulation of Hydraulic Test of an Engine Coolant System
Technical Paper
2022-01-0207
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Designing an efficient vehicle coolant system depends on meeting target coolant flow rate to different components with minimum energy consumption by coolant pump. The flow resistance across different components and hoses dictates the flow supplied to that branch which can affect the effectiveness of the coolant system. Hydraulic tests are conducted to understand the system design for component flow delivery and pressure drops and assess necessary changes to better distribute the coolant flow from the pump. The current study highlights the ability of a complete 3D Computational Fluid Dynamics (CFD) simulation to effectively mimic a hydraulic test. The coolant circuit modeled in this simulation consists of an engine water-jacket, a thermostat valve, bypass valve, a coolant pump, a radiator, and flow path to certain auxiliary components like turbo charger, rear transmission oil cooler etc. A commercial CFD software, Simerics-MP+®, is used to simulate the hydraulic test for two different positions of the poppet valve of the thermostat, viz. a closed position and an 50% opening, at different speeds of the engine. In the CFD model, the complete geometrical details of water-jacket, thermostat, and pump are considered. The remaining components are approximated as pipes with flow resistance models to account for flow and pressure drop at different engine speeds. Firstly, the standalone pump performance is validated in the operating regime of interest, followed by the calibration of the resistance models for the simplified components. At the end, complete system level 3D simulations are conducted and validated for the above mentioned two positions of the poppet valve. The flow distribution and pressure drop across different components show good comparison with the hydraulic test data within 7% error band.
Authors
Citation
Ballani, A., Bhagat, M., Srinivasan, C., Pasunurthi, S. et al., "3D CFD Simulation of Hydraulic Test of an Engine Coolant System," SAE Technical Paper 2022-01-0207, 2022, https://doi.org/10.4271/2022-01-0207.Also In
References
- Adsul , P. , Kotebavi , V. , Bedekar , S. , and Mishra , A. A Simulation Study of Cooling System for Heavy Duty Diesel Engine International Conference on Design, Analysis, Manufacturing and Simulation 2018 https://doi.org/10.1051/matecconf/201817202002
- Bai , L. , Li , Y. , and Yang , M. CFD Simulation Analysis for the Wax-Type Thermostat International Conference on Mechatronics, Electronic, Industrial and Control Engineering 2014 https://doi.org/10.2991/meic-14.2014.306
- Fontanesi , S. , Cicalese , G. , and Giacopini , M. Multiphase CFD-CHT Analysis and Optimization of the Cooling Jacket in a V6 Diesel Engine SAE Technical Paper 2010-01-2096 2010 https://doi.org/10.4271/2010-01-2096
- Watanabe , N. , Kubo , M. , and Yomoda , N. An 1D-3D Integrating Numerical Simulation for Engine Cooling Problem SAE Technical Paper 2006-01-1603 2006 https://doi.org/10.4271/2006-01-1603
- Fathallah , A. , Busse , W. , and Clausthaldi , F. Fluid Flow Analysis of Jacket Cooling System for Marine Diesel Engine 93 Kw International Journal of Marine Engineering Innovation and Research 2017 http://doi.org/10.12962/j25481479.v1i2.2028
- Srinivasan , C. , Zhang , C. , Gao , H. , Wang , D. et al. Modeling of Phase Change within a Wax Element Thermostat Embedded in an Automotive Cooling System SAE Int. J. Engines 10 2 2017 181 195 https://doi.org/10.4271/2017-01-0131
- Varshney , M. , Ballani , A. , Pasunurthi , S.S. , Maiti , D. et al. 3D CFD Coolant System Simulation for Vehicle Drive-Cycle Symposium on International Automotive Technology 2021 https://doi.org/10.4271/2021-26-0407
- Ding , H. , Visser , F.C. , Jiang , Y. , and Furmanczyk , M. Demonstration and Validation of a 3D CFD Simulation Tool Predicting Pump Performance and Cavitation for Industrial Applications Journal of Fluids Engineering 133 1 2011 https://doi.org/10.1115/1.4003196