Numerical Analysis of Flow at Water Jacket of an Internal Combustion Engine

Zhang, De Zhi; Jin, Ying; Su, De Yuan; Gao, Qing

doi:10.4028/www.scientific.net/amr.282-283.702

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…[64][65][66] It not only significantly improves the feasibility and reliability of engine cooling performance prediction, but also reduces a lot of simulation trail time, algorithm optimization time and experimental verification time, and decreases the cost of prototype production in repeated experiments. [67][68][69][70][71] Comparing with other works, Zhang et al 72 used 3D simulation to analyze flow performance of water jacket and give evaluation references for designers. Yang et al 73 conducted heat transfer analysis of exhaust manifold with water jacket and showed that flow distribution is significantly related to heat transfer.…”

Section: Summary For Coolant Transport Analysis Methods Applied In Tw...mentioning

confidence: 99%

CFD modelling on flow field characteristics of engine cooling water jacket and its cooling performance improvement based on coolant transport path analysis method

Tan

Yuan

Huang

2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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Reasonable coolant flow distribution and its heat transfer coefficient (HTC) distribution are of great significance to the cooling performance of water-cooled engine. Therefore, the present paper proposes a coolant transport path analysis method aiming at analyzing coolant velocity distribution and optimizing the coolant flow characteristics of water jacket based on Computational Fluid Dynamics (CFD), with particular emphasis on the assessment of coolant flow velocity distributions of high-temperature area of engine head water jacket. First, the coolant flow characteristics of a single-cylinder water jacket is investigated and it is found that coolant velocity of exhaust bridge is less than 1.5 m/s and the HTC distribution of water jacket under three flow conditions of 15 L/min, 25 L/min and 35 L/min have a small area reaching 5000 W/(m2∙K). Some areas have no coolant flow and the mass flowrate distribution of each gasket hole is unreasonable, proving that original water jacket structure has some shortcomings and need to be optimized. Based on coolant transport analysis, an improved design of the single cylinder water jacket is proposed and HTC distribution of improved water jacket meet cooling requirements that HTC in high heat load area are above 5000 W/(m2∙K). The coolant transport path analysis method for optimizing coolant flow characteristics of water jacket proves to be an effective way through successful application and remarkable achievement in the other single-cylinder water jacket and two-cylinder water jacket that coolant flow distribution become more reasonable and coolant velocity of high-temperature areas are bigger than 1.5 m/s.

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Section: Summary For Coolant Transport Analysis Methods Applied In Tw...mentioning

confidence: 99%

CFD modelling on flow field characteristics of engine cooling water jacket and its cooling performance improvement based on coolant transport path analysis method

Tan

Yuan

Huang

2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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A method for person name disambiguation based on Baidu Encyclopedia

Cao

2011

Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering (TMEE)

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Numerical Simulation and Experimental Investigation of Different Cooling Structures on Cooling Performance and Fuel Consumption of a Two-Cylinder Motorcycle Engine

Tan¹,

Yuan²,

Huang³

2023

SAE Int. J. Engines

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<div>The reasonable engine cooling system design can give a better cooling of engine, the coolant flow direction and different cooling structure designs have great impact on the cooling performance and fuel consumption of engine. Therefore, to gain a deeper understanding of the impact of different cooling system designs on engine cooling performance, three different split cooling structures and two oil–water heat exchanger (OWHE) layouts are designed for a two-cylinder motorcycle engine. Three-dimensional CFD analysis method is used for analyzing the coolant velocity distributions and one-dimensional systematic analysis method is used for analyzing the system flow rate at those cooling structure designs and OWHE designs. Meanwhile, experimental investigation of different cooling structures and OWHE layouts on fuel consumption is conducted by the bench test of worldwide motorcycle test cycle. Results indicated that the difference of coolant flow velocity distribution for four cooling structures are small and the flow resistance of Case D is lowest at fully opened thermostat condition. The fuel consumption of Case D is 4.78 L/100 km, 1.4% lower than that of Case A with the fuel consumption 4.85 L/100 km. The combined split cooling structure Case D and OWHE layout one is proven as the optimal cooling design with 4% fuel consumption reduction compared with that of original cooling structure Case A. The research results can provide theoretical reference for engine cooling performance evaluation and give valuable data to motorcycle designers for quick evaluation of design and quick solutions of improved design.</div>

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Numerical Analysis of Flow at Water Jacket of an Internal Combustion Engine

Cited by 3 publications

References 4 publications

CFD modelling on flow field characteristics of engine cooling water jacket and its cooling performance improvement based on coolant transport path analysis method

CFD modelling on flow field characteristics of engine cooling water jacket and its cooling performance improvement based on coolant transport path analysis method

A method for person name disambiguation based on Baidu Encyclopedia

Numerical Simulation and Experimental Investigation of Different Cooling Structures on Cooling Performance and Fuel Consumption of a Two-Cylinder Motorcycle Engine

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