Liquid Phase Evaporation on the Normal Shock Wave in Moist Air Transonic Flows in Nozzles

This paper presents a numerical analysis of the atmospheric air transonic flow through de Laval nozzles. By nature, atmospheric air always contains a certain amount of water vapor. The calculations were made using a Laval nozzle with a high expansion rate and a convergent-divergent（CD） ＂half-nozzle＂...

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Bibliographic Details
Published inJournal of thermal science Vol. 26; no. 3; pp. 214 - 222
Main Authors Dykas, Sławomir, Szymański, Artur, Majkut, Mirosław
Format Journal Article
LanguageEnglish
Published Heidelberg Science Press 01.06.2017
Springer Nature B.V
Subjects
Classical and Continuum Physics
Convergent-divergent nozzles
Diffusers
Engineering Fluid Dynamics
Engineering Thermodynamics
Evaporation rate
Heat and Mass Transfer
Liquid phases
Moisture content
Normal shock waves
Numerical analysis
Physics
Physics and Astronomy
Transonic flow
Water vapor
shock wave
CFD simulation
condensation
in-house code
transonic flow
moist air
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Summary:This paper presents a numerical analysis of the atmospheric air transonic flow through de Laval nozzles. By nature, atmospheric air always contains a certain amount of water vapor. The calculations were made using a Laval nozzle with a high expansion rate and a convergent-divergent（CD） ＂half-nozzle＂, referred to as a transonic diffuser, with a much slower expansion rate. The calculations were performed using an in-house CFD code. The computational model made it possible to simulate the formation of the liquid phase due to spontaneous condensation of water vapor contained in moist air. The transonic flow calculations also take account of the presence of a normal shock wave in the nozzle supersonic part to analyze the effect of the liquid phase evaporation.
Bibliography:11-2853/O4
This paper presents a numerical analysis of the atmospheric air transonic flow through de Laval nozzles. By nature, atmospheric air always contains a certain amount of water vapor. The calculations were made using a Laval nozzle with a high expansion rate and a convergent-divergent（CD） ＂half-nozzle＂, referred to as a transonic diffuser, with a much slower expansion rate. The calculations were performed using an in-house CFD code. The computational model made it possible to simulate the formation of the liquid phase due to spontaneous condensation of water vapor contained in moist air. The transonic flow calculations also take account of the presence of a normal shock wave in the nozzle supersonic part to analyze the effect of the liquid phase evaporation.
moist air, condensation, transonic flow, shock wave, CFD simulation, in-house code
ISSN:1003-2169
1993-033X
DOI:10.1007/s11630-017-0932-9