摘要
温差引起的气体物性变化对热线风速仪输出电压有较大的影响，为提高热线风速仪对有传热边界条件的流场的测试精度，本文将温差与气体物性变化间的关系引入探针传热平衡方程，从而获得了一个新的温度补偿公式，并通过改变气流温度的标定试验证明其具有较高的精度．
A new compensation formula is presented to improve the measurement precision of hot-wire anemometer for flow field with large temperature difference. The effect of the changes of fluid properties caused by temperature variety is considered. Its compensation results are agree well with those obtained experimentally while the fluid temperature is changed.
关键词
气流温度
补偿
热线风速仪
输出电压
Thermocouple current meters
Gas flow temperature
Compensation
