Splitting of condensation shock waves in fluids of high specific heat
Abstract
The splitting of condensation shock waves in gases with high specific heat is proven experimentally. These gases are partially liquified by adiabatic compression in a shock wave. Such a wave separates two physical conditions of a substance. In this case the upstream state is gaseous, the downstream state is a mixture of liquid and gas. In the case of gases with high specific heat the shock adiabat shows a discontinuity of its slope at the boundary to the two phase region. The adiabat is convex at this point. If this discontinuity is between the initial and the end state of an adiabatic compression, then it causes a splitting of the condensation shock wave in two distinct waves of differing wave speed. The changes of thermodynamic properties of the substance behind each shock wave are calculated using suitable equations of state and the results are compared with the measured quantities.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- January 1984
- Bibcode:
- 1984STIN...8425949S
- Keywords:
-
- Condensing;
- Shock Waves;
- Two Phase Flow;
- Wave Propagation;
- Adiabatic Conditions;
- Flow Velocity;
- Phase Transformations;
- Pressure Effects;
- Thermodynamic Properties;
- Fluid Mechanics and Heat Transfer