CFD Analysis of Engine Water Jacket and it’s Optimization

Liu, Chuan Bo; Zhang, Cheng

doi:10.4028/www.scientific.net/amr.308-310.2308

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…In this study, the convective heat transfer coefficient in the water jacket was found to have a maximum value of approximately 49,000 W/m 2 K, with the maximum temperature occurring around the glow plug area, as determined by temperature distribution. Liu and Zhang [9] used the ANSYS/Fluent software to investigate the cooling performance of the engine water jacket. Their simulation results had a deviation of 5.3% from experimental results.…”

Section: Introductionmentioning

confidence: 99%

Influence of different reynolds numbers and geometries on water jacket cooling performance in a compression ignition engine

Kantaroğlu

2023

Preprint

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In this study, the effect of cooling water Re number and geometry on the cooling performance of the water jacket of the F-Type F8Q 706 engine has been investigated. For this purpose, a 1D model of the engine has been created and verified with the engine performance test results. The effective power for 2500 rpm in the model has been 8.785% higher than the test in the engine catalogue. In another test, the power value has been calculated to be 8.411% higher on average for all engine speeds. Using the in-cylinder pressures and temperatures have been taken from the 1D model, some boundary conditions of the 3D water jacket CFD model have been calculated from the analytical equations. In the calculations have been made in 3D CFD analysis, the stored heat has been decreased by 62.57% from 22128.97 Re to 6175.79 Re. In addition, the average temperature on the cylinder liner surface has been increased by 21.82% at the same Re numbers. At the end of the geometric structure analysis, the finned jacket geometry has been increased the stored heat by 42.01% and the number of PECs by 20.74%. Thus, in the water jacket heat transfer calculations have been made using a validated 1D engine model in addition to analytical and numerical calculations, it has been observed that the change in geometric properties created a good heat storage ability.

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Section: Introductionmentioning

confidence: 99%

Influence of different reynolds numbers and geometries on water jacket cooling performance in a compression ignition engine

Kantaroğlu

2023

Preprint

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“…As an important component for engine cooling, the cooling performance of engine cooling water jacket impacts the reliability of heating parts immediately, and if the engine temperature is too high or too low, various problems will occur. 1 The role of engine cooling water jacket is to form the heat exchange process between coolant flow and jacket wall temperature, ensure engine parts to keep appropriate working temperature. 2 Meanwhile, with the improvement of science technology and manufacture technique, the rated power of engine are increased for meeting the market demand of high performance or large displacement motorcycle products.…”

Section: Introductionmentioning

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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