Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM
Abstract 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 a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-02-01
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| Series: | npj Microgravity |
| Online Access: | https://doi.org/10.1038/s41526-021-00134-y |
| _version_ | 1797427211931746304 |
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| author | Maryam Aliakbary Mianmahale Arjomand Mehrabani-Zeinabad Masoud Habibi Zare Mahdi Ghadiri |
| author_facet | Maryam Aliakbary Mianmahale Arjomand Mehrabani-Zeinabad Masoud Habibi Zare Mahdi Ghadiri |
| author_sort | Maryam Aliakbary Mianmahale |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-03-09T08:41:57Z |
| format | Article |
| id | doaj.art-8252560df8f942d1b577410214fe7205 |
| institution | Directory Open Access Journal |
| issn | 2373-8065 |
| language | English |
| last_indexed | 2024-03-09T08:41:57Z |
| publishDate | 2021-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Microgravity |
| spelling | doaj.art-8252560df8f942d1b577410214fe72052023-12-02T16:41:47ZengNature Portfolionpj Microgravity2373-80652021-02-017111110.1038/s41526-021-00134-ySingle-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFMMaryam Aliakbary Mianmahale0Arjomand Mehrabani-Zeinabad1Masoud Habibi Zare2Mahdi Ghadiri3Isfahan University of Technology, Department of Chemical EngineeringIsfahan University of Technology, Department of Chemical EngineeringIsfahan University of Technology, Department of Chemical EngineeringInstitute of Research and Development, Duy Tan UniversityAbstract 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.https://doi.org/10.1038/s41526-021-00134-y |
| spellingShingle | Maryam Aliakbary Mianmahale Arjomand Mehrabani-Zeinabad Masoud Habibi Zare Mahdi Ghadiri Single-bubble EHD behavior into water two-phase flow under electric-field stress and gravitational acceleration using PFM npj Microgravity |
| 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 |
| url | https://doi.org/10.1038/s41526-021-00134-y |
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