辐射热流计响应时间测量方法研究

为满足瞬态热流的测量需求，解决辐射热流计响应时间无法准确测量的问题，设计辐射热流计响应时间测量装置。该装置利用高功率激光器快响应特性形成热流阶跃系统，使用高速采集系统同步采集热流计输出，对热流计响应曲线进行分析计算得到响应时间。对比多种响应时间测试方案，并通过试验对辐射热流计响应时间测量装置的快响应特性进行了验证，结果表明：该装置测量辐射热流计响应时间最快为4.4 ms，能够有效满足大量程、快响应的辐射热流计响应时间精准、高效测试的需求，促进了我国瞬态辐射热流计量技术的发展。

Research on response time measuring method of radiant heat flux meter

In order to meet requirements of transient heat flux measurement and solve the problem that the response time of radiant heat flux meter cannot be accurately measured, we designed a response time measuring device of radiant heat flux meter, which uses the fast response characteristics of high?power laser to form a heat flux step system, uses a high?speed acquisition system to collect the output of the heat flux meter synchronously. The response curve of the heat flux meter is analyzed and calculated to obtain the response time. A variety of response time testing schemes are compared, and the fast response characteristics of the radiation heat flux meter response time measurement device is verified through experiments. The results show that the fastest response time of the device to measure the radiation heat flux meter is 4.4 ms, which can effectively meet the response time test requirements of large?range and fast response radiation heat flux meter, and promote the development of transient radiant heat flux measurement technology in China.