论文部分内容阅读
1.概论在航空发动机先进燃烧室发展试验中,为了分析燃烧组织情况,计算燃烧室性能和热传导方面的问题,必须准确可靠地测定高温燃气温度分布。为了测量高温燃气温度,曾经探索过几种方法。例如流量法。它是利用几支多点总压管测得平均总压,经过换算得到被测截面的平均温度,误差是±4%。达种方法的主要优点是结构简单,工作可靠。但是,不能得到温度分布。热电偶的主要优点是可以直接测定温度及温度场。在1800℃高温燃气条件下,曾经试用过一些耐高温
1. Introduction In the development of advanced combustion chambers for aeroengines, the temperature distribution of high-temperature gas must be accurately and reliably measured in order to analyze combustion conditions and calculate combustion chamber performance and heat transfer problems. In order to measure the hot gas temperature, several methods have been explored. For example, flow method. It is the use of several multi-point total pressure pipe measured the average total pressure, measured by the average cross-sectional temperature, the error is ± 4%. The main advantage of this method is simple structure, reliable work. However, the temperature distribution can not be obtained. The main advantage of thermocouples is the direct determination of temperature and temperature fields. In 1800 ℃ high temperature gas conditions, have tried some high temperature