Theoretical analysis and modeling of flow instability in a mini-channel evaporator
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- 作者：Yiwu Kuanga ; Wen Wanga ; wenwang@sjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Jianyin Miaob ; Xin&rsquo ; gang Yub ; Rui Zhuana
- 关键词：Pressure drop oscillation ; Microchannel ; Flow boiling instability ; Ammonia
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：104
- 期：Complete
- 页码：149-162
- 全文大小：3691 K
文摘
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Theoretical analysis and modeling of pressure drop instability are conducted.
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The pressure drop oscillation is a kind of self-excited vibration.
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The oscillation mainly consists of flow boiling stage and liquid rewetting stage.
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There is a maximum allowable inlet sub-cooling degree causing no instability.
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Mass flow rate affects the oscillation period and boiling behaviors significantly.