Ir al contenido (pulsa Retorno)

Universitat Politècnica de Catalunya

    • Català
    • Castellano
    • English
    • LoginRegisterLog in (no UPC users)
  • mailContact Us
  • world English 
    • Català
    • Castellano
    • English
  • userLogin   
      LoginRegisterLog in (no UPC users)

UPCommons. Global access to UPC knowledge

Banner header
61.736 UPC E-Prints
You are here:
View Item 
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Mecànica de Fluids
  • Articles de revista
  • View Item
  •   DSpace Home
  • E-prints
  • Departaments
  • Departament de Mecànica de Fluids
  • Articles de revista
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation

Thumbnail
View/Open
Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation.pdf (3,612Mb)
 
10.1080/19942060.2019.1694996
 
  View Usage Statistics
  LA Referencia / Recolecta stats
Cita com:
hdl:2117/176818

Show full item record
Geng, Linlin
Escaler Puigoriol, Francesc XavierMés informacióMés informacióMés informació
Document typeArticle
Defense date2019-11-26
PublisherEngineering Applications of Computational Fluid Mechanics
Rights accessOpen Access
Attribution 4.0 International
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 4.0 International
Abstract
The numerical simulation of unsteady cavitation flows is sensitive to the selected models and associated parameters. Consequently, three Reynolds Average Navier-Stokes (RANS) turbulence models and the Zwart cavitation model were selected to assess their performance for the simulation of cloud cavitation on 2D hydrofoils. The experimental cavitation tests from a NACA65012 hydrofoil at different hydrodynamic conditions were used as a reference to tune the modeling parameters and the experimental tests from a NACA0015 were finally used to validate them. The effects of near wall grid refinement, time step, iterations and mesh elements were also investigated. The results indicate that the Shear Stress Transport (SST) model is sensitive to near wall grid resolution which should be fine enough. Moreover, the cavitation morphology and dynamic behavior are sensitive to the selection of the Zwart empirical vaporization, Fv, and condensation, Fc, coefficients. Therefore, a multiple linear regression approach with the single objective of predicting the shedding frequency was carried out that permitted to find the range of coefficient values giving the most accurate results. In addition, it was observed that they provided a better prediction of the vapor volume fraction and of the instantaneous pressure pulse generated by the main cloud cavity collapse.
CitationGeng, L.; Escaler, X. Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation. "Engineering applications of computational fluid mechanics", 26 Novembre 2019, vol. 14, núm. 1, p. 151-167. 
URIhttp://hdl.handle.net/2117/176818
DOI10.1080/19942060.2019.1694996
ISSN1994-2060
Publisher versionhttps://www.tandfonline.com/doi/full/10.1080/19942060.2019.1694996
Collections
  • Departament de Mecànica de Fluids - Articles de revista [417]
  • CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica - Articles de revista [67]
  View Usage Statistics

Show full item record

FilesDescriptionSizeFormatView
Assessment of R ... teady cloud cavitation.pdf3,612MbPDFView/Open

Browse

This CollectionBy Issue DateAuthorsOther contributionsTitlesSubjectsThis repositoryCommunities & CollectionsBy Issue DateAuthorsOther contributionsTitlesSubjects

© UPC Obrir en finestra nova . Servei de Biblioteques, Publicacions i Arxius

info.biblioteques@upc.edu

  • About This Repository
  • Contact Us
  • Send Feedback
  • Privacy Settings
  • Inici de la pàgina