Practical results for nonequilibrium expansion flow of anharmonic oscillator molecules
Abstract
Regarding a steady, adiabatic, frictionless and one-dimensional flow through a Laval-nozzle as an example, the differential flow equations including the effect of vibrational relaxation were integrated. The effect of the parameters throat diameter, angle of expansion, stagnation temperature and pressure on translational temperature and pressure are determined for the model of an harmonically oscillating CO-molecule as well as the deviations by using an anharmonic model. The results are compared with isentropic flow leading to a practical method for computing flows with vibrational relaxation using the equations of isentropic flow with varying ratio of specific heats.
- Publication:
-
Luft und Raumfahrt
- Pub Date:
- 1976
- Bibcode:
- 1976LR.........253K
- Keywords:
-
- Convergent-Divergent Nozzles;
- Gas Expansion;
- Molecular Flow;
- Molecular Relaxation;
- Nonequilibrium Flow;
- Nozzle Flow;
- One Dimensional Flow;
- Approximation;
- Flow Equations;
- Molecular Oscillations;
- Numerical Integration;
- Relaxation Time;
- Stagnation Pressure;
- Stagnation Temperature;
- Steady Flow;
- Atomic and Molecular Physics