THERMO-MOLECULAR PRESSURE DIFFERENCE FOR A LONG TUBE AT ANY TEMPERATURE RATIO
The applet provides the thermo-molecular pressure difference for a long tube. The notations and method of calculation can be found in the paper. The diffuse gas-surface interaction and the hard sphere molecular model are assumed in the present program. If you have questions or suggestio write me: sharipov@fisica.ufpr.br
Scheme of flow

Input data:

Radius of tube R:meter
Length of tube L:meter
Temperature T1:K
Temperature T2:K
Pressure P1:Pa
Gas*:

Result:

Pressure P2: Pa
T2/T1:
P2/P1:
exponent γ:
Viscosity at T1:micro Pa s
Rarefaction δ1:
Rarefaction δ2:
*If you need to calculate another species of gas, write me sharipov@fisica.ufpr.br