- 會議論文
Dynamic Analysis of a fluid flow heat exchanger system
具流體流動之熱交換系統動態特性分析
摘要
The tubes of a component cooling water heat exchanger are frequently affected by this shock wave in a exchanger system with a fluid flow. So, tubes are often found to be worn out. This fluid flow may alter the dynamic characteristics and introduce the instability in this heat exchanger system. This work examines dynamics characteristics in a component cooling water heat exchanger. Due to fluid coupling between tubes, consisting of periodic tubes is employed to simulate as a coupled periodic structure system. Through the fluid, water, each tube is coupled to the adjacent one, and the system is weakly coupled is found. By using the Galerkin method, the dynamic equations of motion of this system with reference to the fluid flow effect can be derived. Numerical results are observed that the fluid flow may affect significantly the dynamics of a component cooling heat exchanger.
並列摘要
冷卻水熱交換器的導管常常受到此交換系統中的流體流動衝擊波所衝擊，因此，經常被發現此熱交換器之導管有磨損現象。流體流動在交換器系統不僅僅改變此此系統的動態特性，甚至引發此熱交換器系統的不穩定性現象。本研究即探討著這冷卻水熱交換器系統的動態特性分析。由於導管與導管之間的存在流體，此流體為耦合著導管，包括這些週期性的導管與流體等系統，可以模擬為一耦合性週期結構體系統。藉由此流體(水)，每根導管可以被耦合至相鄰的另一根導管，這就是一弱耦合性週期系統。本文中使用葛樂金(Galerkin)法，導出具有流體流動效應之該週期性系統的運動方程式。數值分析結果可以觀察到，流體流動效應會十分顯著地影響此熱交換器系統的動態特性。
延伸閱讀
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- Dang, T. T. (2010). 微熱交換器熱傳與流體流動現象之研究 [doctoral dissertation, Chung Yuan Christian University]. Airiti Library. https://doi.org/10.6840/cycu201000648
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