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Numerical modeling of two-phase transonic flow
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SYSNO ASEP 0330946 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Numerical modeling of two-phase transonic flow Tvůrce(i) Halama, Jan (UT-L) RID
Benkhaldoun, F. (FR)
Fořt, Jaroslav (UT-L)Zdroj.dok. Mathematics and Computers in Simulation. - : Elsevier - ISSN 0378-4754
Roč. 80, č. 88 (2010), s. 1624-1635Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova two-phase flow ; condensation ; fractional step method Vědní obor RIV BK - Mechanika tekutin CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000278820500007 EID SCOPUS 77953146796 DOI 10.1016/j.matcom.2009.02.004 Anotace Our work is aimed at the development of numerical method for the modeling of transonic flow of wet steam including condensation/evaporation phase change. We solve a system of PDE's consisting of Euler or Navier-Stokes equations for the mixture of vapor and liquid droplets and transport equations for the integral parameters describing the droplet size spectra. Numerical method is based on a fractional step technique due to the stiff character of~source terms, i.e. we solve separately the set of homogenous PDE's by the finite volume method and the remaining set of ODE's either by explicit Runge-Kutta or implicit Euler method. The finite volume method is based on the Lax-Wendroff scheme with conservative artificial dissipation terms for structured grid. We also note result achieved by recently developed finite volume method with VFFC scheme. We discuss numerical results of steady and unsteady two-phase transonic flow in 2D nozzle, 2D and 3D turbine cascade and 2D turbine stage with moving rotor cascade. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2011
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