The effect of gravity on the vertical thermal conductivity of a gas is theoretically investigated. To do this, we used the law of energy conservation and added to the average energy of the thermal motion of the molecule its potential energy in the gravitational field: <>= 2+. The formula for calculating the vertical heat flux =− − was obtained. From the formula it follows that in a gravitational field in an ideal gas with a temperature uniform in volume there a heat flux will exist 0=−V . For dry nitrogen, calculations give 0=1,3∙10−4 Вт м2 .
Comments: 9 Pages. 9 p., Russian
[v1] 2019-01-22 00:47:15
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