Importance of Air Humidity and Contaminations in the Internal and External Transonic Flows

P. Wiśniewski, S. Dykas and S. Yamamoto
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P. Wiśniewski: Department of Power Engineering and Turbomachinery, The Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
S. Dykas: Department of Power Engineering and Turbomachinery, The Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
S. Yamamoto: Department of Computer and Mathematical Sciences, Tohoku University, Sendai 980-8579, Japan

Energies, 2020, vol. 13, issue 12, 1-12

Abstract: The paper presents mathematical modelling of steam condensation in the atmospheric air transonic flows. A single-fluid model was employed. The model was validated against the in-house experimental studies of internal flow in nozzles and against benchmark tests available in literature i.e., RAE2822 transonic airfoil. The impact of air relative humidity on the condensation process under transonic flow conditions was examined. The paper shows that the impact of the condensation process in air transonic flow is non-negligible and has to be taken under consideration in flow simulations. The presence of air contaminants in form of small particles was considered too. Their crucial role in the change of the transonic flow structure was numerically confirmed.

Keywords: computational fluid dynamics; relative humidity; condensation; transonic flow (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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