Numerical Simulation for Flow and Heat Transfer of Engine Coolant

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Numerical Simulation for Flow and Heat Transfer of Engine Coolant

更新时间：2025-07-09

- Numerical Simulation for Flow and Heat Transfer of Engine Coolant
- Vol. 43, Issue 3, Pages: 17-21(2009)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK424
- Online First：10 March 2009，
  
  Published：2009
- 稿件说明：
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Numerical Simulation for Flow and Heat Transfer of Engine Coolant[J]. 2009, 43(3): 17-21.
DOI：

Numerical Simulation for Flow and Heat Transfer of Engine Coolant[J]. 2009, 43(3): 17-21. DOI：

摘要

为了提高发动机的冷却效率、降低高温零件的热负荷、实现整机的热量合理分配与利用

针对冷却水套优化设计中存在的冷却液三维流动与传热问题

以直列4缸发动机为研究对象

利用流固耦合的方法确定冷却水套壁面的传热边界条件

采用计算流体动力学软件AVL-FIRE对发动机冷却系统进行三维数值模拟

并对冷却水套内冷却液的流场分布、温度分布、壁面换热系数、各缸冷却均匀性和压力损失进行了分析.在此基础上

为了实现发动机冷却水套三维流场形态的可视化

构建了与实际冷却水套三维尺寸成1:1的水套试验件模型

结合其结构特点讨论了试验件的制备方案

并对模拟工况下试验件的强度与管路系统的压力损失进行了验证计算

从而进一步为冷却水套的优化设计提供了理论与试验依据.

Abstract

For improving the engine cooling efficiency and reducing thermal load of high temperature components to realize the rational heat distribution and utilization

a numerical simulation of engine cooling system with computational fluid dynamics software AVl-FIRE was carried out for a four-cylinder engine to simulate the three-dimensional flow and heat transfer of cooling water in the engine jacket for optimization design. During the calculation

the heat transfer boundary of water jacket was determined following coupled liquid-solid theory

and the flow field of cooling water

the heat convection coefficient of the inner wall

the cooling uniformity of each cylinder and the whole pressure loss for the engine were analyzed. To realize the visualization of 3D flow field of the engine coolant

one to one scale 3D experimental part model of cooling jacket was constructed and its preparation scheme was also discussed according to the structural characters. Then the structural strength and pressure loss of the piping system were also simulated to verify the rationality of the design scheme.

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references

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王希珍,严兆大,周军.柴油机缸套热负荷评估的分析及实验研究方法 [J].内燃机工程,2001,22(4): 62-65.

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