Enhanced heat transfer research in liquid-cooled channel based on piezoelectric vibrating cantilever
(2021) In Thermal Science 25(2 Part A). p.823-832- Abstract
In order to study the variation of vortices and heat transfer enhancement characteristics of piezoelectric vibrating cantilever in liquid-cooled channels, the effects of fluid density and viscosity, mainstream velocity, and excitation voltage on vortices were analyzed. The theoretical and numerical simulation of piezoelectric vortices was carried out by using fluid-solid coupling method. On the basis of hydrodynamic function considering the additional effect of liquid viscosity and density on piezoelectric vibrator, the vortex structure of piezoelectric vibrator was analyzed by panel method free-wake model. It is found that the larger the density of the liquid, the smaller the vortex shedding strength and the radius of the core. The... (More)
In order to study the variation of vortices and heat transfer enhancement characteristics of piezoelectric vibrating cantilever in liquid-cooled channels, the effects of fluid density and viscosity, mainstream velocity, and excitation voltage on vortices were analyzed. The theoretical and numerical simulation of piezoelectric vortices was carried out by using fluid-solid coupling method. On the basis of hydrodynamic function considering the additional effect of liquid viscosity and density on piezoelectric vibrator, the vortex structure of piezoelectric vibrator was analyzed by panel method free-wake model. It is found that the larger the density of the liquid, the smaller the vortex shedding strength and the radius of the core. The larger the viscosity of the liquid, the easier to fully develop the vortex generated by the excitation. The increase of the mainstream flow velocity is beneficial to the development of the vortex structure and the increase of the vorticity intensity. Compared with the increase of the mainstream flow velocity, the excitation voltage is more conducive to the enhancement of the vorticity structure, then make it easier to mix hot and cold fluids, thus enhancing heat transfer.
(Less)
- author
- Fu, Jiahong LU ; Chen, Yichen ; Zhang, Yu and Zhang, Xufang
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- enhanced heat transfer, fluid-solid interaction, piezoelectric vibrating cantilever, vortex analysis
- in
- Thermal Science
- volume
- 25
- issue
- 2 Part A
- pages
- 10 pages
- publisher
- Vinca Inst Nuclear Sci
- external identifiers
-
- scopus:85103521259
- ISSN
- 0354-9836
- DOI
- 10.2298/TSCI200520244F
- language
- English
- LU publication?
- yes
- id
- 8f033fcf-6552-43fc-a49f-5a5e0eb7dc0f
- date added to LUP
- 2021-04-14 10:39:03
- date last changed
- 2022-04-27 01:30:49
@article{8f033fcf-6552-43fc-a49f-5a5e0eb7dc0f,
abstract = {{<p>In order to study the variation of vortices and heat transfer enhancement characteristics of piezoelectric vibrating cantilever in liquid-cooled channels, the effects of fluid density and viscosity, mainstream velocity, and excitation voltage on vortices were analyzed. The theoretical and numerical simulation of piezoelectric vortices was carried out by using fluid-solid coupling method. On the basis of hydrodynamic function considering the additional effect of liquid viscosity and density on piezoelectric vibrator, the vortex structure of piezoelectric vibrator was analyzed by panel method free-wake model. It is found that the larger the density of the liquid, the smaller the vortex shedding strength and the radius of the core. The larger the viscosity of the liquid, the easier to fully develop the vortex generated by the excitation. The increase of the mainstream flow velocity is beneficial to the development of the vortex structure and the increase of the vorticity intensity. Compared with the increase of the mainstream flow velocity, the excitation voltage is more conducive to the enhancement of the vorticity structure, then make it easier to mix hot and cold fluids, thus enhancing heat transfer.</p>}},
author = {{Fu, Jiahong and Chen, Yichen and Zhang, Yu and Zhang, Xufang}},
issn = {{0354-9836}},
keywords = {{enhanced heat transfer; fluid-solid interaction; piezoelectric vibrating cantilever; vortex analysis}},
language = {{eng}},
number = {{2 Part A}},
pages = {{823--832}},
publisher = {{Vinca Inst Nuclear Sci}},
series = {{Thermal Science}},
title = {{Enhanced heat transfer research in liquid-cooled channel based on piezoelectric vibrating cantilever}},
url = {{http://dx.doi.org/10.2298/TSCI200520244F}},
doi = {{10.2298/TSCI200520244F}},
volume = {{25}},
year = {{2021}},
}