Importance of air humidity and contaminations in the internal and external transonic flows

P. Wi&0015B;niewski, S. Dykas, S. Yamamoto

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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.

Original languageEnglish
Article number3153
Issue number12
Publication statusPublished - 2020 Jun


  • Computational fluid dynamics
  • Condensation
  • Relative humidity
  • Transonic flow

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering


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