A Critical Flow Model for Supercritical Pressures

The investigation of critical flow model for supercritical pressure condition is relatively rare. Based on isentropic flow and thermal equilibrium assumptions, a model is derived to calculate discharge flow rate and critical pressure. Considering the influence of friction and local resistance, a cor...

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Bibliographic Details
Main Authors:	Yufeng Lv, Minfu Zhao, Kaiwen Du
Format:	Article
Language:	English
Published:	Frontiers Media S.A. 2020-10-01
Series:	Frontiers in Earth Science
Subjects:	critical flow supercritical water cooled reactor loss of coolant accident thermal equilibrium effect resistance coefficient
Online Access:	https://www.frontiersin.org/article/10.3389/fenrg.2020.521233/full

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spelling	doaj-3ac7d3dd3e4644f3ad96ab974b60667a2020-11-25T03:57:32ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632020-10-01810.3389/fenrg.2020.521233521233A Critical Flow Model for Supercritical PressuresYufeng LvMinfu ZhaoKaiwen DuThe investigation of critical flow model for supercritical pressure condition is relatively rare. Based on isentropic flow and thermal equilibrium assumptions, a model is derived to calculate discharge flow rate and critical pressure. Considering the influence of friction and local resistance, a correction coefficient is added which can be calculated from CFX analysis software. The model avoids the calculation of quality and is applicable to wide range which covering the subcooled water, two-phase mixture, steam critical flow under subcritical pressure and supercritical pressure. Reasonable agreement is shown between model predicted results and experiment data, illustrating the accuracy of the proposed model.https://www.frontiersin.org/article/10.3389/fenrg.2020.521233/fullcritical flowsupercritical water cooled reactorloss of coolant accidentthermal equilibrium effectresistance coefficient
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yufeng Lv Minfu Zhao Kaiwen Du
spellingShingle	Yufeng Lv Minfu Zhao Kaiwen Du A Critical Flow Model for Supercritical Pressures Frontiers in Earth Science critical flow supercritical water cooled reactor loss of coolant accident thermal equilibrium effect resistance coefficient
author_facet	Yufeng Lv Minfu Zhao Kaiwen Du
author_sort	Yufeng Lv
title	A Critical Flow Model for Supercritical Pressures
title_short	A Critical Flow Model for Supercritical Pressures
title_full	A Critical Flow Model for Supercritical Pressures
title_fullStr	A Critical Flow Model for Supercritical Pressures
title_full_unstemmed	A Critical Flow Model for Supercritical Pressures
title_sort	critical flow model for supercritical pressures
publisher	Frontiers Media S.A.
series	Frontiers in Earth Science
issn	2296-6463
publishDate	2020-10-01
description	The investigation of critical flow model for supercritical pressure condition is relatively rare. Based on isentropic flow and thermal equilibrium assumptions, a model is derived to calculate discharge flow rate and critical pressure. Considering the influence of friction and local resistance, a correction coefficient is added which can be calculated from CFX analysis software. The model avoids the calculation of quality and is applicable to wide range which covering the subcooled water, two-phase mixture, steam critical flow under subcritical pressure and supercritical pressure. Reasonable agreement is shown between model predicted results and experiment data, illustrating the accuracy of the proposed model.
topic	critical flow supercritical water cooled reactor loss of coolant accident thermal equilibrium effect resistance coefficient
url	https://www.frontiersin.org/article/10.3389/fenrg.2020.521233/full
work_keys_str_mv	AT yufenglv acriticalflowmodelforsupercriticalpressures AT minfuzhao acriticalflowmodelforsupercriticalpressures AT kaiwendu acriticalflowmodelforsupercriticalpressures AT yufenglv criticalflowmodelforsupercriticalpressures AT minfuzhao criticalflowmodelforsupercriticalpressures AT kaiwendu criticalflowmodelforsupercriticalpressures
_version_	1724460262126256128

A Critical Flow Model for Supercritical Pressures

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