Heat transfer characteristics calculation for aero-engine shell-tube fuel-oil heat exchanger

LÜ Ya-guo; LIU Zhen-xia

doi:10.13224/j.cnki.jasp.2014.12.007

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Heat transfer characteristics calculation for aero-engine shell-tube fuel-oil heat exchanger

更新时间：2026-07-07

- Heat transfer characteristics calculation for aero-engine shell-tube fuel-oil heat exchanger
- Vol. 29, Issue 12, Pages: 2830-2835(2014)
- 作者机构：
  
  西北工业大学动力与能源学院,西安,710072
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2014.12.007
  CLC：
- Published：2014
- 稿件说明：
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吕亚国, 刘振侠. 航空发动机管壳式燃-滑油散热器换热特性计算[J]. 航空动力学报, 2014, 29(12): 2830-2835.

doi: 10.13224/j.cnki.jasp.2014.12.007
吕亚国, 刘振侠. 航空发动机管壳式燃-滑油散热器换热特性计算[J]. 航空动力学报, 2014, 29(12): 2830-2835. DOI： 10.13224/j.cnki.jasp.2014.12.007.

doi: 10.13224/j.cnki.jasp.2014.12.007 DOI：

摘要

采用无量纲关系曲线(Re~St·Pr2/3)计算管壳式燃-滑油散热器管程、壳程表面传热系数

基于效率-传热单元数法建立了管壳式燃-滑油散热器换热特性计算模型;以航空发动机某管壳式燃-滑油散热器少量试验数据为基础

拟合得到了该型散热器管程和壳程Re~St·Pr2/3关系曲线

并将该关系曲线应用于另一结构类似的管壳式燃-滑油散热器换热特性计算.算例计算表明:计算值与试验数据吻合较好

管程、壳程出口温度相对误差均不超过6.5%

总换热量相对误差不超过7.4%.该方法可应用于航空发动机管壳式燃-滑油散热器设计及验证阶段的换热特性计算.

Abstract

A dimensionless relationship (Re~St·Pr2/3)was introduced for calculating the heat transfer coefficients in tube and shell sides of shell-tube fuel-oil heat exchanger

and a heat transfer characteristics calculation model of shell-tube fuel-oil heat exchanger was established based on efficiency-number unit method. Based on little experimental data of one shell-tube fuel-oil heat exchanger of aero-engine

the relationships of Re~St·Pr2/3 were fitted for tube and shell sides of this heat exchanger

and the relationships were applied to heat transfer characteristics calculation of a similar shell-tube fuel-oil heat exchanger. A case study shows that the relative errors of the outlet temperature in tube and shell sides are less than 6.5% and the relative error of total heat transfer is less than 7.4%

indicating that the calculation results are in good agreement with experimental data. The method presented can be applied to calculate the heat transfer characteristics of aero-engine shell-tube fuel-oil heat exchanger in design and validation stages.

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