Abstract
A generally applicable numerical simulation method has been developed to simulate the flow of a condensing real gas. The flow is described by the Euler equations, whereas the condensation process is modeled by Hill's method. Special emphasis is placed on the development of an equation of state, which accurately describes the behavior of a real gas (i.e. a gas at high pressure). The condensation process in a fully expanding quasi - 1D nozzle flow is considered, by applying either the perfect-gas law or the real - gas equation of state. Comparison of results shows that, by applying the perfect - gas law, the temperature and pressure are over-predicted, and consequently the condensation onset is delayed with respect to the real-gas case. Furthermore, two 2D test cases have been carried out with the full 3D method. The first test case is the transonic flow of an air/water mixture through a channel with a circular arc bump on the bottom. The inflow Mach - number is chosen such that a shockwave is formed in the flow over the circular arc. The second test case is the supercritical flow of an air/water mixture through a nozzle with very small cross-sectional area divergence downstream of the throat. Both test cases show that the condensation process is very sensitive to accurate shockwave resolution.
Original language | English |
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Title of host publication | Computational technologies for fluid/thermal/structural/chemical systems with industrial applications |
Subtitle of host publication | presented at the 2001 ASME Pressure Vessels and Piping Conference, Atlanta, Georgia, July 22-26, 2001 |
Editors | Vladimir V. Kudriavtsev, Satoyuki Kawano, Chris R. Klijn |
Publisher | American Society of Mechanical Engineers (ASME) |
Pages | 49-56 |
Number of pages | 8 |
ISBN (Print) | 0-7918-1679-6 |
Publication status | Published - 22 Jun 2001 |
Event | 3rd International Symposium on Computational Technologies for Fluid/Thermal/Chemical Systems with Industrial Applications, CFD 2001 - Hyatt Regency, Atlanta, United States Duration: 22 Jun 2001 → 26 Jun 2001 Conference number: 3 |
Publication series
Name | ASME Pressure Vessels and Piping Division |
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Publisher | ASME |
Volume | 424 |
ISSN (Print) | 0277-027X |
Conference
Conference | 3rd International Symposium on Computational Technologies for Fluid/Thermal/Chemical Systems with Industrial Applications, CFD 2001 |
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Country | United States |
City | Atlanta |
Period | 22/06/01 → 26/06/01 |