实验流体力学2013，Vol.27Issue(1)：38-45,8.
高温风洞蓄热式加热器蓄热单元初步设计与分析
Investigation of cored bricks matrix preliminary design and thermal analysis for high temperature wind tunnel storage heater
罗飞腾 1宋文艳 1刘伟雄 2李建平1
作者信息
- 1. 西北工业大学动力与能源学院,西安710072
- 2. 中国空气动力研究与发展中心,四川绵阳 621000
- 折叠
摘要
Abstract
The storage heater is the one of heating methods for current high temperature clean air wind-tunnel application. Aiming at cored bricks storage heater, the preliminary design procedure of cored bricks matrix was investigated, including thermal performance analysis, pressure-drop and thermal stress evaluation. Combined with a typical wind-tunnel test condition, a cored bricks matrix was preliminarily designed and analyzed in detail. Especially the effects of geometric parameters on thermal performance, pressure-drop and thermal stress resistance were evaluated. The evaluation results indicate that the hole diameter and spacing are the most important design parameters dominating the other geometric parameters, heater working performance and security. The matrix height is a key designed parameter to stabilize the outlet air temperature and test duration. The preliminary design concept of cored bricks matrix was finally selected in consideration of tradeoff, which suggested that the expected Mach 6. 0 flight conditions can be well simulated by the designed cored bricks matrix of storage heater. The present research efforts could provide well reference for conceptual design and scheme evaluation of the cored bricks storage heater.
关键词
高温风洞/纯净空气/蓄热式加热器/空心砖/热应力Key words
high-temperature wind tunnel/clean air/storage heater/cored brick/thermal stress分类
航空航天引用本文复制引用
罗飞腾,宋文艳,刘伟雄,李建平..高温风洞蓄热式加热器蓄热单元初步设计与分析[J].实验流体力学,2013,27(1):38-45,8.
