Numerical investigation on heat transfer performance of planar elastic tube bundle by flow-induced vibration in heat exchanger
Numerical investigation on heat transfer performance of planar elastic tube bundle by flow-induced vibration in heat exchanger
复制标题
换热器流激振动平面弹性管束传热性能数值研究
DOI：
10.1016/j.ijheatmasstransfer.2016.07.107
复制
发表时间：
2016-12
影响因子：
5.2
通讯作者：
Wenbo Bi
中科院分区：
文献类型：
--
作者：
Derong Duan;Peiqi Ge;Wenbo Bi
采用双向流固耦合（FSI）模型，在入口流速为0.2-0.5 m/s范围内，对平面弹性管束的流激振动强化传热进行了数值研究。该双向流固耦合计算采用有限体积法求解三维不可压非定常Navier-Stokes方程，采用有限元法结合动网格法求解管束动力平衡方程，并与已发表的实验结果进行了对比验证。给出了管周向、局部位置、单管和整体管束的努塞尔数。采用性能评价准则（PEC）对平面弹性管束的传热性能进行了研究。结果表明，振动频率在质量块附近的局部位置对强化传热起主导作用。在管束中部，振动幅度对强化传热的影响很大。因此，当入口流速为0.2 m/s和0.5 m/s时，中间两管的平均传热强化率分别为12.97%和4.58%，而最内管和最外管的平均传热强化率分别为5.37%和2.4%。在入口流速为0.2- 0.5m/s的范围内，低流速时，流激振动对平面弹性管束的传热有明显的强化作用，其强化率分别为8.26%、6.07%、5.67%和3.91%。与机械振动强化传热技术相比，流激振动在能量转换方面具有更大的优势。PEC表明，在工业生产中，为了获得较高的传热系数，有时更容易接受较高的入口速度。
This study numerically investigated the heat transfer enhancement of planar elastic tube bundle by flow-induced vibration based on a two-way fluid structure interaction (FSI) model in the range of inlet velocity 0.2–0.5 m/s. This two-way FSI calculation involved the unsteady, three-dimensional incompressible Navier–Stokes equation solved with finite volume approach and the dynamic equilibrium equation of tube bundle solved with finite element method combined with dynamic mesh scheme, which was verified by comparing with the published experimental results. Then the Nusselt number of the circumference of tube, local position, single tube and the overall tube bundle was presented. The performance evaluation criterion (PEC) was selected to study the heat transfer performance of planar elastic tube bundle. Results show that vibration frequency dominates the heat transfer enhancement at the local position near the mass-block. In the middle of tube bundle, vibration amplitude plays a significant role on heat transfer enhancement. Therefore, the average heat transfer enhancement of 12.97% and 4.58% at the middle two tubes is higher than that of 5.37% and 2.4% at the innermost and outermost tubes when the inlet velocity is 0.2 m/s and 0.5 m/s, respectively. In the range of inlet velocity 0.2–0.5 m/s, flow-induced vibration contributes to enhancing the heat transfer of planar elastic tube bundle at low inlet velocity, resulting in the heat transfer enhancement of 8.26%, 6.07%, 5.67% and 3.91% respectively. Compared to the mechanical vibration strengthening heat transfer technology, flow-induced vibration plays an advantage on energy conversion to improve heat transfer. PEC indicates that the higher inlet velocity is sometimes more acceptable to obtain a higher heat transfer coefficient in the industry production.
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影响因子：
--
作者：
C. Gau;J. Wu;C. Liang
通讯作者：
C. Gau;J. Wu;C. Liang
DOI：
10.1016/j.ijheatmasstransfer.2008.05.037
发表时间：
2009-01
影响因子：
5.2
作者：
Lin Cheng;T. Luan;W. Du;Mingtian Xu
通讯作者：
Lin Cheng;T. Luan;W. Du;Mingtian Xu
DOI：
10.1115/1.3424205
发表时间：
1977-12
期刊：
--
影响因子：
--
作者：
R. Blevins;R. Scanlan
通讯作者：
R. Blevins;R. Scanlan
影响因子：
2.2
作者：
Kihong Park;J. Min;Jin-Kyu Kim;Sang-hu Park;M. Ha
通讯作者：
Kihong Park;J. Min;Jin-Kyu Kim;Sang-hu Park;M. Ha
影响因子：
1.7
作者：
Mao-cheng Tian;Lin Cheng;Yiqiang Lin;Guanmin Zhang
通讯作者：
Mao-cheng Tian;Lin Cheng;Yiqiang Lin;Guanmin Zhang