基于RPI模型的内燃机冷却水腔内数值模拟研究

董非; 苑天林; 武志伟; 倪捷

doi:10.11949/0438-1157.20190498

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基于RPI模型的内燃机冷却水腔内数值模拟研究

流体力学与传递现象 | 更新时间：2020-06-24

- 基于RPI模型的内燃机冷却水腔内数值模拟研究
- Numerical study of engine water jackets using RPI model
- 化工学报 2019年70卷第S2期页码：250-257
- 作者机构：
  
  江苏大学汽车与交通工程学院，江苏镇江 212013
- 作者简介：
  
  董非（1982—），男，博士，副教授，jsdxdf@163.com
- 基金信息：
  
  国家自然科学基金项目(51406070);江苏省六大高峰人才项目(2017-JSQC-008)
- DOI：10.11949/0438-1157.20190498
  中图分类号： TK 421.1
- 收稿：2019-05-13，
  
  修回：2019-05-23，
  
  纸质出版：2019-09-05
- 稿件说明：
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董非, 苑天林, 武志伟, 倪捷. 基于RPI模型的内燃机冷却水腔内数值模拟研究[J]. 化工学报, 2019, 70(S2): 250-257

DONG Fei, YUAN Tianlin, WU Zhiwei, NI Jie. Numerical study of engine water jackets using RPI model[J]. CIESC Journal, 2019, 70(S2): 250-257
董非, 苑天林, 武志伟, 倪捷. 基于RPI模型的内燃机冷却水腔内数值模拟研究[J]. 化工学报, 2019, 70(S2): 250-257 DOI： 10.11949/0438-1157.20190498.

DONG Fei, YUAN Tianlin, WU Zhiwei, NI Jie. Numerical study of engine water jackets using RPI model[J]. CIESC Journal, 2019, 70(S2): 250-257 DOI： 10.11949/0438-1157.20190498.

摘要

以欧拉两相流模型为基础，建立了适用于内燃机流动传热的RPI(Rensselaer polytechnic institute)过冷沸腾换热模型。并与Robinson的矩形通道试验结果进行了对比分析，验证了模型的适用性和计算精度。将此模型应用于实际内燃机缸盖及冷却水腔内的直接耦合传热计算，同时对单相流和两相流的计算结果进行对比分析。结果表明：沸腾传热可以明显提高冷却水腔的换热效率，并降低鼻梁区等局部高温区域的温度；使用考虑沸腾的两相流模型进行计算模拟时，计算结果与试验结果的误差更小；欧拉两相流计算缸盖火力面测点温度误差相对于纯对流换热模型误差降低了1.78%。

Abstract

Based on the Euler two-phase flow model

a subcooled boiling heat transfer RPI (Rensselaer polytechnic institute) model of flow and heat transfer for internal combustion engines was established. Compared with the experimental results of Robinson’s rectangular channel

and the applicability and accuracy of the RPI model are verified. The model is applied to the calculation of direct coupled heat transfer in the cylinder head and cooling water jacket of an actual internal combustion engine

and the results of single-phase flow and two-phase flow are compared and analyzed. The results show that boiling heat transfer can obviously improve the heat transfer efficiency of cooling water jacket and reduce the high temperature of local area such as bridge passages

the error between calculation results and experiment results is smaller by using two-phase flow model considering boiling

and the error of measuring point temperature is reduced by 1.78% compared with that calculated by using convection heat transfer model.

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references

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