ON OPTIMAL POSITION OF ISOLATING AXIAL HEAT CONDUCTION OF OSCILLATORY TUBE WALL

LI Xuelai; ZHU Che; FANG Yaoqi

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ON OPTIMAL POSITION OF ISOLATING AXIAL HEAT CONDUCTION OF OSCILLATORY TUBE WALL

更新时间：2025-12-10

- ON OPTIMAL POSITION OF ISOLATING AXIAL HEAT CONDUCTION OF OSCILLATORY TUBE WALL
- CIESC Journal Issue 9, (2001)
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- Online First：25 September 2001，
  
  Published：25 September 2001
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LI Xuelai, ZHU Che, FANG Yaoqi. ON OPTIMAL POSITION OF ISOLATING AXIAL HEAT CONDUCTION OF OSCILLATORY TUBE WALL[J]. CIESC Journal, 2001, (9).
DOI：

LI Xuelai, ZHU Che, FANG Yaoqi. ON OPTIMAL POSITION OF ISOLATING AXIAL HEAT CONDUCTION OF OSCILLATORY TUBE WALL[J]. CIESC Journal, 2001, (9). DOI：

摘要

就有关因素对振荡管管壁轴向导热最佳热隔阻位置的影响进行了实验研究和理论分析 .提出了一种预测最佳隔热位置的有效方法

Abstract

The optimal position( l opt ) of isolating the heat conduction axially through the oscillatory tube wall is investigated in the present paper. The maximum moving distance( L max ) of the contact surface inside the tube is studied and a calculating formula of L max is derived. Based on the formula of L max

the influences of some factors such as expansion ratio

ratio of filling time and discharge time

number of nozzle

and jet flow exciting frequency on l opt are analyzed. It is shown that the value of l opt predicted by the formula is higher than that of experiments. The formula of L max can only be used to calculate the approximate value of l opt . The relation between lopt and the axial temperature distribution of the tube wall is also investigated. Both the theoretical and experimental results show that the position where the axial temperature gradient of the tube wall reaches the maximum value is exactly the position of l opt So the value of l opt can be determined simply by means of measuring the axial temperature distribution of the tube wall.

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