$Void fraction of supersonic steam jet in subcooled water$

Void fraction of supersonic steam jet in subcooled water

For most operations in process, petroleum and power industries gas-liquid two phase flows occurs, so an accurate estimation of void fraction is vital because it affects the calculations of heat and mass transfer as well as hydrodynamics. Any inaccuracy in estimation may lead to drastic incidents alo...

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Main Authors:	Afrasyab, Khan, Khairuddin, Sanaullah, M.Sobri, Takriff, Aini, Hussain, Ajmal, Shah, Imran Rafiq, Chughtai
Format:	Article
Language:	English
Published:	Elsevier Ltd. 2016
Subjects:	TC Hydraulic engineering. Ocean engineering
Online Access:	http://ir.unimas.my/11465/ http://ir.unimas.my/11465/ http://ir.unimas.my/11465/ http://ir.unimas.my/11465/1/Void%20fraction%20of%20supersonic%20steam%20jet%20in%20subcooled%20water%20%28abstract%29.pdf

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recordtype	eprints
spelling	unimas-114652017-02-22T06:39:56Z http://ir.unimas.my/11465/ Void fraction of supersonic steam jet in subcooled water Afrasyab, Khan Khairuddin, Sanaullah M.Sobri, Takriff Aini, Hussain Ajmal, Shah Imran Rafiq, Chughtai TC Hydraulic engineering. Ocean engineering For most operations in process, petroleum and power industries gas-liquid two phase flows occurs, so an accurate estimation of void fraction is vital because it affects the calculations of heat and mass transfer as well as hydrodynamics. Any inaccuracy in estimation may lead to drastic incidents along with heavy monetary loss. An effort has been made here to estimate the approximate void fraction of supersonic steam jet into the sub-cooled water. Electrical Resistance Tomography (ERT) has been used for the purpose along with the Electrical Impedance Tomography and Diffuse Optical Tomography Reconstruction Software (EIDORS) to generate the conductivity scans obtained by ERT setup. Before the experimentation, for further assurance on our void fraction estimations, the measurement system has been calibrated by securing scans of heated Teflon rod of diameter 6 mm, which is approximately having the same cross-sectional surface area as the steam jet have and reported in previous studies at the same hydrodynamic conditions. Images of supersonic steam jet in subcooled water have been processed by the help of EIDORS and image processing technique. The over estimation in void fraction of Teflon rod is ranging from 46.17 to 83.44% and when it is subtracted from the total void fraction of supersonic steam jet (46.51–83.79%) at steam inlet pressure of 1.5–3.0 bar and surrounding water temperature 30–60 °C respectively, the actual void fraction of Teflon rod comes out to be ranging from 0.34% to 0.35% of the total cross-sectional area of vessel. When these results are compared with the previous studies, a close agreement has been observed between these two sets of results. Elsevier Ltd. 2016 Article PeerReviewed text en http://ir.unimas.my/11465/1/Void%20fraction%20of%20supersonic%20steam%20jet%20in%20subcooled%20water%20%28abstract%29.pdf Afrasyab, Khan and Khairuddin, Sanaullah and M.Sobri, Takriff and Aini, Hussain and Ajmal, Shah and Imran Rafiq, Chughtai (2016) Void fraction of supersonic steam jet in subcooled water. Flow Measurement and Instrumentation, 47. pp. 35-44. ISSN 0955-5986 https://www.scopus.com/inward/record.url?eid=2-s2.0-84949883804&partnerID=40&md5=283846acc827ff0eb66641bcf98250c6 http://dx.doi.org/10.1016/j.flowmeasinst.2015.12.002
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Sarawak
building	UNIMAS Institutional Repository
collection	Online Access
language	English
topic	TC Hydraulic engineering. Ocean engineering
spellingShingle	TC Hydraulic engineering. Ocean engineering Afrasyab, Khan Khairuddin, Sanaullah M.Sobri, Takriff Aini, Hussain Ajmal, Shah Imran Rafiq, Chughtai Void fraction of supersonic steam jet in subcooled water
description	For most operations in process, petroleum and power industries gas-liquid two phase flows occurs, so an accurate estimation of void fraction is vital because it affects the calculations of heat and mass transfer as well as hydrodynamics. Any inaccuracy in estimation may lead to drastic incidents along with heavy monetary loss. An effort has been made here to estimate the approximate void fraction of supersonic steam jet into the sub-cooled water. Electrical Resistance Tomography (ERT) has been used for the purpose along with the Electrical Impedance Tomography and Diffuse Optical Tomography Reconstruction Software (EIDORS) to generate the conductivity scans obtained by ERT setup. Before the experimentation, for further assurance on our void fraction estimations, the measurement system has been calibrated by securing scans of heated Teflon rod of diameter 6 mm, which is approximately having the same cross-sectional surface area as the steam jet have and reported in previous studies at the same hydrodynamic conditions. Images of supersonic steam jet in subcooled water have been processed by the help of EIDORS and image processing technique. The over estimation in void fraction of Teflon rod is ranging from 46.17 to 83.44% and when it is subtracted from the total void fraction of supersonic steam jet (46.51–83.79%) at steam inlet pressure of 1.5–3.0 bar and surrounding water temperature 30–60 °C respectively, the actual void fraction of Teflon rod comes out to be ranging from 0.34% to 0.35% of the total cross-sectional area of vessel. When these results are compared with the previous studies, a close agreement has been observed between these two sets of results.
format	Article
author	Afrasyab, Khan Khairuddin, Sanaullah M.Sobri, Takriff Aini, Hussain Ajmal, Shah Imran Rafiq, Chughtai
author_facet	Afrasyab, Khan Khairuddin, Sanaullah M.Sobri, Takriff Aini, Hussain Ajmal, Shah Imran Rafiq, Chughtai
author_sort	Afrasyab, Khan
title	Void fraction of supersonic steam jet in subcooled water
title_short	Void fraction of supersonic steam jet in subcooled water
title_full	Void fraction of supersonic steam jet in subcooled water
title_fullStr	Void fraction of supersonic steam jet in subcooled water
title_full_unstemmed	Void fraction of supersonic steam jet in subcooled water
title_sort	void fraction of supersonic steam jet in subcooled water
publisher	Elsevier Ltd.
publishDate	2016
url	http://ir.unimas.my/11465/ http://ir.unimas.my/11465/ http://ir.unimas.my/11465/ http://ir.unimas.my/11465/1/Void%20fraction%20of%20supersonic%20steam%20jet%20in%20subcooled%20water%20%28abstract%29.pdf
first_indexed	2018-09-06T15:54:21Z
last_indexed	2018-09-06T15:54:21Z
_version_	1610874105578389504

Void fraction of supersonic steam jet in subcooled water

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