Pregled bibliografske jedinice broj: 956095
Numerical Simulation of Annular Flow Boiling in a Vertical Pipe Using Two-Fluid Model
Numerical Simulation of Annular Flow Boiling in a Vertical Pipe Using Two-Fluid Model // Proceedings of the 9th International Congress of Croatian Society of Mechanics / Marović, Pavao ; Krstulović-Opara, Lovre ; Galić, Mirela (ur.).
Split: Hrvatsko društvo za mehaniku (HDM), 2018. str. 1-9 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Numerical Simulation of Annular Flow Boiling in a Vertical Pipe Using Two-Fluid Model
Autori
Cukrov, Alen ; Sato, Yohei ; Boras, Ivanka ; Ničeno, Bojan
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the 9th International Congress of Croatian Society of Mechanics
/ Marović, Pavao ; Krstulović-Opara, Lovre ; Galić, Mirela - Split : Hrvatsko društvo za mehaniku (HDM), 2018, 1-9
Skup
9th International Congress of Croatian Society of Mechanics (ICCSM 2018)
Mjesto i datum
Split, Hrvatska, 18.09.2018. - 22.09.2018
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Annular flow boiling, Two-fluid model, CFD
Sažetak
The goal of this paper is to develop a numerical model for computation of annular flow boiling in a vertical pipe under 70 bar pressure and 10 K inlet subcooling. The model is based on two-fluid formulation in conjunction with an extended formulation of Rensselaer Polytechnic Institute model for boiling flows. Here, the successful modeling of the annular flow boiling is achieved by use of closure correlations for interfacial transfer proposed by [1]. This refers to constitutive relations for vapor-bubble diameter and interfacial lift force, both being computed as flow regime dependent. A uniform wall heat flux is applied at the pipe wall, while the inlet mass fluxes were varied. The model validation is done by comparison of vapor volume fraction at specific points near the pipe outlet with the data extracted from measurements conducted by [2]. The obtained results agree well with the experimental data, thus indicating the reliability of the developed model in computation of such multiphase flow phenomena.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
Napomena
[1] S.-J. Yoon, G. Agostinelli, E. Baglietto. Assessment of multiphase CFD with zero closure model for boiling water reactor fuel assemblies, in: 17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH 17), Xi'an, China, 2017. [2] C. Adamsson. Measurements of Film Flow Rate in Heated Tubes with Various Axial Power Distributions. PhD Thesis, KTH Sweden, 2006.
