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Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM
In this study, single-bubble electro-hydrodynamic effects on the two-phase laminar flow of water under electric field stress are investigated using numerical modeling. A 2D axisymmetric model is also developed to study the growth and departure of a single bubble. The phase-field method is applied to...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7893078/ https://www.ncbi.nlm.nih.gov/pubmed/33602933 http://dx.doi.org/10.1038/s41526-021-00134-y |
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author | Mianmahale, Maryam Aliakbary Mehrabani-Zeinabad, Arjomand Zare, Masoud Habibi Ghadiri, Mahdi |
author_facet | Mianmahale, Maryam Aliakbary Mehrabani-Zeinabad, Arjomand Zare, Masoud Habibi Ghadiri, Mahdi |
author_sort | Mianmahale, Maryam Aliakbary |
collection | PubMed |
description | In this study, single-bubble electro-hydrodynamic effects on the two-phase laminar flow of water under electric field stress are investigated using numerical modeling. A 2D axisymmetric model is also developed to study the growth and departure of a single bubble. The phase-field method is applied to track the interphase between liquid and gas. The growth of the attached vapor bubble nucleus to a superheat at 7.0 °C and 8.5 °C are evaluated with 50° and 90° contact angles. The results show that the enhancement of the contact angle changes the velocity and temperature fields around the bubble. It is observed that the growing size and base of the bubble is increased with increasing the wall superheat, but the bubble departure diameter and time are decreased. The electric field results in raising the number of detached bubbles from the superheat at a certain time interval but decreasing the bubbles departure size. Additionally, the formation of stretched bubbles enhances the rate of heat flux and there is a non-linear relationship between the applied voltage and heat flux. |
format | Online Article Text |
id | pubmed-7893078 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-78930782021-03-03 Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM Mianmahale, Maryam Aliakbary Mehrabani-Zeinabad, Arjomand Zare, Masoud Habibi Ghadiri, Mahdi NPJ Microgravity Article In this study, single-bubble electro-hydrodynamic effects on the two-phase laminar flow of water under electric field stress are investigated using numerical modeling. A 2D axisymmetric model is also developed to study the growth and departure of a single bubble. The phase-field method is applied to track the interphase between liquid and gas. The growth of the attached vapor bubble nucleus to a superheat at 7.0 °C and 8.5 °C are evaluated with 50° and 90° contact angles. The results show that the enhancement of the contact angle changes the velocity and temperature fields around the bubble. It is observed that the growing size and base of the bubble is increased with increasing the wall superheat, but the bubble departure diameter and time are decreased. The electric field results in raising the number of detached bubbles from the superheat at a certain time interval but decreasing the bubbles departure size. Additionally, the formation of stretched bubbles enhances the rate of heat flux and there is a non-linear relationship between the applied voltage and heat flux. Nature Publishing Group UK 2021-02-18 /pmc/articles/PMC7893078/ /pubmed/33602933 http://dx.doi.org/10.1038/s41526-021-00134-y Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Mianmahale, Maryam Aliakbary Mehrabani-Zeinabad, Arjomand Zare, Masoud Habibi Ghadiri, Mahdi Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title | Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title_full | Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title_fullStr | Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title_full_unstemmed | Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title_short | Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM |
title_sort | single-bubble ehd behavior into water two-phase flow under electric-field stress and gravitational acceleration using pfm |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7893078/ https://www.ncbi.nlm.nih.gov/pubmed/33602933 http://dx.doi.org/10.1038/s41526-021-00134-y |
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