Second-order approximation to forced oscillations of thermal convection under small time-varying forcing
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- 作者：Hideshi Ishida ; ishida@me.es.osaka-u.ac.jp" class="auth_mail" title="E-mail the corresponding author ; Seitaro Sugimura1 ; Takayuki Kuroda ; Genta Kawahara
- 关键词：Second-order approximation ; Small time-varying forcing ; Ordinary differential equation system (ODEs) ; Indicator ; Sensitivity ; Direct-current component
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：96
- 期：Complete
- 页码：145-153
- 全文大小：983 K
文摘
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We propose an approximation to the steady response under any small forced vibrations.
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The theory is more accurate than the linear theory proposed by Ishida et al.
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The theory quantifies the region of amplitude where the linear theory is effective.
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The theory also allows us to evaluate the change in time-mean value by vibration.
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They are validated on a vibrated thermal convection induced by heat-flux vibration.