Cristin-resultat-ID: 1914135
Sist endret: 18. januar 2022, 09:17
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

HLLC-type methods for compressible two-phase flow in ducts with discontinuous area changes

Bidragsytere:
  • Alexandra Metallinou Log
  • Svend Tollak Munkejord og
  • Morten Hammer

Tidsskrift

Computers & Fluids
ISSN 0045-7930
e-ISSN 1879-0747
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 227
Artikkelnummer: 105023
Open Access

Importkilder

Scopus-ID: 2-s2.0-85108263971

Klassifisering

Emneord

CFD

Beskrivelse Beskrivelse

Tittel

HLLC-type methods for compressible two-phase flow in ducts with discontinuous area changes

Sammendrag

In this work, the Harten-Lax-van Leer Contact (HLLC) approximate Riemann solver is extended to two-phase flow through ducts with discontinuous cross-sections. Two main strategies are explored regarding the treatment of the non-conservative term arising in the governing equations. In the first, labelled HLLC+S, the non-conservative term is discretized separately. In the second, labelled HLLCS, the non-conservative term is incorporated in the Riemann solver. The methods are assessed by numerical tests for single and two-phase flow of CO, the latter employing a homogeneous equilibrium model where the thermodynamic properties are calculated using the Peng–Robinson equation of state. The methods have different strengths, but in general, HLLCS is found to work best. In particular, it is demonstrated to be equally accurate and more robust than existing methods for non-resonant flow. It is also well-balanced for subsonic flow in the sense that it conserves steady-state flow.

Bidragsytere

Aktiv cristin-person

Alexandra Metallinou Log

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet

Svend Tollak Munkejord

  • Tilknyttet:
    Forfatter
    ved Gassteknologi ved SINTEF Energi AS

Morten Hammer

  • Tilknyttet:
    Forfatter
    ved Gassteknologi ved SINTEF Energi AS
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