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总温

总温(亦称停滞温度滞温全温)(对应英文的Total TemperatureStagnation Temperature),是一个与空气动力学相关的名词。

物理意义

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流体在流动时具有它的压力、温度、密度、速度、马赫数。如能使一流体以绝热过程完全静止时,那么它的动能将转化为内能,反映在压力、温度与密度上。此时之温度便为总温。[1]:501实际例子为航空器皮托管在前端量测的便是总温与总压。

流体总温与静温的关系式为与马赫数有关的函数:

[1]:529

其中:

= 静温(Static Temperature)(以绝对温标表示)
= 总温(以绝对温标表示)
= 马赫数
= 绝热指数(热容比)heat capacity ratioadiabatic indexratio of specific heats)(空气约为1.4)

参考文献

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  1. ^ 1.0 1.1 Jonh Anderson. Fundamentals of Aerodynamics,4th. Edition. New York: McGRAW-Hill. 2005. ISBN 0071254080. 
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总温
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