7.2 The Theory of The Experiment
Figure 7.2 shows a cylinder separated into two chambers A and B by a partition wall perforated with a very fine hole. Let pA and TA, pB and TB be pressures and temperatures of the gas in the chambers A and B, respectively and let pA > pB. Let vA and vB be the specific volumes of the gas in the two chambers A and B. When the gas is forced through the orifice, the issuing jet possesses certain amount of kinetic energy which gradually subsides at some distance from the orifice and is converted into heat by fluid friction. Near the orifice there would be a lowering of temperature due to kinetic energy produced. At a distance from the orifice where the turbulence has subsided, the temperature of the chamber B will ...
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