Numerical simulation and experimental investigation on the thermal-fluid-solid multi-physical field coupling characteristics of wet friction pairs considering cavitation effect

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2024-11-19 DOI:10.1016/j.applthermaleng.2024.124955

Qiliang Wang , Xingbo Zhang , Dagang Wang , Hongwei Cui , Shuai Zhang , Jianmei Wang

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引用次数: 0

Abstract

The coupling characteristics of thermal-fluid-solid multi-physical fields are crucial in determining the operational performance and service life of wet clutches. However, the underlying mechanism behind the influence of cavitation effect on these coupling characteristics remains unclear. Therefore, we propose a numerical solution method for considering cavitation effect in the coupling characteristics based on the multi-physical field coupling platform MPCCI combined with ABAQUS and FLUENT. The distribution patterns and intercoupling relationships among temperature field, flow field, and stress-strain field are comprehensively analyze. The influence of relative speed, cross-sectional shape of oil grooves, and oil flow on the coupling characteristics is investigated. Experimental validation confirms that the proposed model accurately predicts temperature variation by accounting for cavitation effect. The temperature distribution of steel discs is notably affected by the cavitation effect, leading to an elevation in the maximum temperature and uneven distribution characterized by localized hot spots along the circumferential direction. Accounting for the cavitation effect reduces errors between calculated and experimental values of temperature rise. The convective heat transfer coefficient gradually decreases radially, with a more pronounced decrease in the cavitation region. An increase in relative speed and a decrease in oil flow both lead to greater cavitation volume, resulting in higher temperature of steel discs. Among three different cross-sectional shapes of oil grooves investigated, rectangular grooves exhibit larger areas affected by cavitation compared to triangular grooves. These research findings provide a theoretical basis and technical support for accurate prediction of thermal characteristics within high-power wet clutches.

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考虑空化效应的湿摩擦副热-流-固多物理场耦合特性的数值模拟与实验研究

热-流-固多物理场的耦合特性对于决定湿式离合器的运行性能和使用寿命至关重要。然而，气蚀效应对这些耦合特性影响的内在机制仍不清楚。因此，我们基于多物理场耦合平台 MPCCI，结合 ABAQUS 和 FLUENT，提出了一种考虑耦合特性中气蚀效应的数值求解方法。综合分析了温度场、流场和应力应变场的分布规律和相互耦合关系。研究了相对速度、油槽截面形状和油流对耦合特性的影响。实验验证证实，通过考虑空化效应，所提出的模型能准确预测温度变化。钢制圆盘的温度分布明显受到空化效应的影响，导致最高温度升高，且分布不均，沿圆周方向出现局部热点。考虑空化效应可减少温升计算值与实验值之间的误差。对流传热系数沿径向逐渐减小，在空化区域的减小更为明显。相对速度的增加和油流量的减少都会导致空化体积增大，从而使钢盘温度升高。在所研究的三种不同横截面形状的油槽中，与三角形油槽相比，矩形油槽受空化影响的面积更大。这些研究成果为准确预测大功率湿式离合器的热特性提供了理论基础和技术支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.