Modelling of non-stationary pressure fluctuations during boiling in a minichannel

Romuald Paweł Mosdorf , Hubert Grzybowski , Iwona Zaborowska

Abstract

Boiling in a minichannel occurring at a low mass flow rate is accompanied by non-stationary twophase flow. The analysis of pressure fluctuations during non-stationary boiling in minichannel shows that quasi-periodic changes in flow patterns can be observed in such fluctuations. We can define in such a way the sequences, which are called “oscillating boiling patterns”. In the present paper the model, which allows us to simulate the appearance of “oscillating boiling patterns” has been presented. In the proposed model the mass flow rate changes (because of evaporation and condensation) are modelled by compressible volumes representing various sizes bubbles. In the paper the good quality agreement between experimental data and simulation results has been achieved. Experimental data was collected during the boiling in open minichannels system with inner diameter of 1 mm.
Author Romuald Paweł Mosdorf (FME / DMACS)
Romuald Paweł Mosdorf,,
- Department of Mechanics and Applied Computer Science
, Hubert Grzybowski (FME / DMACS)
Hubert Grzybowski,,
- Department of Mechanics and Applied Computer Science
, Iwona Zaborowska (FME)
Iwona Zaborowska,,
- Faculty of Mechanical Engineering
Journal seriesE3S Web of Conferences, [Environment, energy and earth sciences web of conferences], ISSN 2267-1242, (0 pkt)
Issue year2019
Vol128
Pages1-5
Publication size in sheets0.5
Article number04007
DOIDOI:10.1051/e3sconf/201912804007
URL https://www.e3s-conferences.org/articles/e3sconf/abs/2019/54/e3sconf_icchmt2019_04007/e3sconf_icchmt2019_04007.html
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, 12-02-2020, ArticleFromJournal
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