纵流壳程换热器新型抗振折流元件的数值研究

Numerical Investigation of an Innovative Vibration-proof Baffle Element for a Heat Exchanger with Longitudinal Flows at the Shell Side

提出了一种新型抗振折流杆元件的结构,并对该结构的单元流道提出了简化模型,用数值方法模拟了夹持式折流杆支撑的单元流道内的流动和传热状况,从流体的流动形态、压力分布和温度分布等方面与直折流圆杆单元流道进行了对比。结果表明,除阻力降外,该结构的传热量和传热系数均有所改善。

Proposed is the construction of an innovative vibration- proof baffle rod element along with a simplified model for the unitary flow duct of this construction. By employing a numerical method the flow and heat transfer condition was simulated in a unitary flow duct supported by a clamp-type baffle rod. The results of the simulation were compared with those of the unitary flow duct of a straight baffle rod from the standpoint of fluid flow configuration, pressure and temperature distribution, etc.. It has been found that with the exception of resistance drop the recommended construction has its heat transfer rate and heat transfer factor somewhat improved.