Resonance of natural convection in a side heated enclosure with a mechanically oscillating bottom wall

Sung Ki Kim; Seo Young Kim; Young Don Choi

doi:10.1016/S0017-9310(02)00030-3

Resonance of natural convection in a side heated enclosure with a mechanically oscillating bottom wall

Sung Ki Kim, Seo Young Kim, Young Don Choi

* Honorary professors

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

An experimental study has been implemented to elucidate a resonance of natural convection in a side-heated enclosure with a mechanically oscillating bottom wall. The impetus of the present study is to provide an experimental verification of the resonant frequency of natural convection that has been numerically predicted so far. The experimental results show that the amplitude of fluctuating air temperature inside the enclosure peaks at a particular frequency of the bottom wall oscillation, which is indicative of resonance. The resonant frequency increases with the increase of the system Rayleigh number and it is little affected by the increase of forcing amplitude. The resonant frequency measured in the present experiment is in good accordance with the previous numerical predictions in which the models are based on the degree of thermal stratification in the interior.

Original language	English
Pages (from-to)	3155-3162
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	45
Issue number	15
DOIs	https://doi.org/10.1016/S0017-9310(02)00030-3
Publication status	Published - 2002 May 20

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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title = "Resonance of natural convection in a side heated enclosure with a mechanically oscillating bottom wall",

abstract = "An experimental study has been implemented to elucidate a resonance of natural convection in a side-heated enclosure with a mechanically oscillating bottom wall. The impetus of the present study is to provide an experimental verification of the resonant frequency of natural convection that has been numerically predicted so far. The experimental results show that the amplitude of fluctuating air temperature inside the enclosure peaks at a particular frequency of the bottom wall oscillation, which is indicative of resonance. The resonant frequency increases with the increase of the system Rayleigh number and it is little affected by the increase of forcing amplitude. The resonant frequency measured in the present experiment is in good accordance with the previous numerical predictions in which the models are based on the degree of thermal stratification in the interior.",

author = "Kim, {Sung Ki} and Kim, {Seo Young} and Choi, {Young Don}",

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AU - Kim, Sung Ki

AU - Kim, Seo Young

AU - Choi, Young Don

N1 - Funding Information: This work was supported by a grant from the National Research Laboratory Project of Ministry of Science and Technology, Korea.

PY - 2002/5/20

Y1 - 2002/5/20

N2 - An experimental study has been implemented to elucidate a resonance of natural convection in a side-heated enclosure with a mechanically oscillating bottom wall. The impetus of the present study is to provide an experimental verification of the resonant frequency of natural convection that has been numerically predicted so far. The experimental results show that the amplitude of fluctuating air temperature inside the enclosure peaks at a particular frequency of the bottom wall oscillation, which is indicative of resonance. The resonant frequency increases with the increase of the system Rayleigh number and it is little affected by the increase of forcing amplitude. The resonant frequency measured in the present experiment is in good accordance with the previous numerical predictions in which the models are based on the degree of thermal stratification in the interior.

AB - An experimental study has been implemented to elucidate a resonance of natural convection in a side-heated enclosure with a mechanically oscillating bottom wall. The impetus of the present study is to provide an experimental verification of the resonant frequency of natural convection that has been numerically predicted so far. The experimental results show that the amplitude of fluctuating air temperature inside the enclosure peaks at a particular frequency of the bottom wall oscillation, which is indicative of resonance. The resonant frequency increases with the increase of the system Rayleigh number and it is little affected by the increase of forcing amplitude. The resonant frequency measured in the present experiment is in good accordance with the previous numerical predictions in which the models are based on the degree of thermal stratification in the interior.

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Resonance of natural convection in a side heated enclosure with a mechanically oscillating bottom wall

Abstract

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