Application of a fast transonic trajectory determination approach in 1-D modelling of steady-state two-phase carbon dioxide flow

Wojciech Angielczyk , Kamil Leszek Śmierciew , Dariusz Butrymowicz


An original generalised procedure of determination of the transonic trajectory has been proposed. The procedure is much faster than the commonly used Newton Critical Point approach. The approach was applied in modelling of a carbon dioxide transonic two-phase flow through the converging-diverging nozzle by means of the Homogeneous Equilibrium Model and Delayed Equilibrium Model (DEM). The simulations concern flows that were experimentally and theoretically investigated in the literature. DEM was prev ously used only in choked water flow simulations. Its application in CO2flow modelling and the supersonic trajectory part determination is a novel contribution. The adjusted for CO2version of the closurelaw was proposed. The investigation revealed that the applied Darcy friction factor determination approach has a significant influence on the results. Moreover, the models are unable of producing physically acceptable solutions until theLockhartMartinelli approach is utilised. It was shown that the Friedel approach might be considered more proper for CO2flows.
Author Wojciech Angielczyk (FME / DMDTE)
Wojciech Angielczyk,,
- Department of Machinery Design and Thermal Engineering
, Kamil Leszek Śmierciew (FME / DMDTE)
Kamil Leszek Śmierciew,,
- Department of Machinery Design and Thermal Engineering
, Dariusz Butrymowicz (FME / DMDTE)
Dariusz Butrymowicz,,
- Department of Machinery Design and Thermal Engineering
Journal seriesE3S Web of Conferences, [Environment, energy and earth sciences web of conferences], ISSN 2267-1242, (0 pkt)
Issue year2019
Publication size in sheets0.5
Conference12th International Conference on Computational Heat, Mass and Momentum Transfer ( ICCHMT 2019), 03-09-2019 - 06-09-2019, Rome, Włochy
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)5
Score sourcejournalList
ScoreMinisterial score = 5.0, 26-02-2020, ArticleFromJournal
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