All Problems

Transport Phenomena

Problem 2.245

Solve the foregoing problem, assuming that the discs are located in an ultra-rarefied gas of molar mass \(M,\) at temperature \(T\) and under pressure \(p\).

Reveal Answer
N=1/3ωa4pπM/2RTN=1 / 3 \omega a^{4} p \sqrt{\pi M / 2 R T}