Abstract: This paper presents the influence on the heat loss to hot-wire supports from temperature and ptrssure of gas. Considering the heat loss to the hot-wire supports, A revised formula is estabilished. On the basis of experiments. A semi-experienced formula is presented to easily calculate the heat loss to the hot-wire supports. It has been proved that these formulae are correct and of important value in theory and practice.

Key words: hot-wire anemometer, heat loss, compensation

摘要： 本文介绍了气体温度和压力对热线支架传热损失的影响。在考虑热线支架传热损失的情况下,导出了热线风速仪输出信号的温度和压力修正公式。为便于热线支架传热损失的计算,在实验的基础上,导出了热线支架温度计算的半经验公式。经实验证明,这些公式是非常可信的,具有一定的理论意义和实用价值。

关键词: 热线风速仪, 传热损失, 修正