碳氢燃料在旋转通道中传热的数值模拟

Numerical Simulation of Heat Transfer of Hydrocarbon Fuels in Rotating Channel

本文利用数值模拟方法,对不同转速下正癸烷在U型管路的传热特性进行了研究。得到以下结论:对于U型管路来说,旋转速度越大,出口温度越高,整体管路换热能力越强;碳氢燃料在准临界温度附近的变物性对换热有比较显著的影响,会使换热恶化;浮升力也会影响旋转管路的换热,相比静止管路影响更为复杂。

In this paper,the numerical simulation method for n-decane at different speeds in the U-shaped pipe heat transfer characteristics were studied.We get the following conclusions：For the U-shaped pipe,the higher rotation speed,the higher the outlet temperature and the stronger the overall heat transfer;The changesof physical properties of hydrocarbon fuels in the vicinity of the critical temperature quasi have more significant impact on the heat,and may cause heat transfer deterioration;Buoyancy force will also affect the rotation of the heat transfer,and it is more complicated compared to result under the still condition.