双套管密相气力输运过程的数值模拟和能耗分析  

Numerical Simulation and Estimation of Energy Consumption for the Pneumatic Conveying Using Double-tube Socket

作　　者：管春生[1] 张春霞[1] 陈灵[2] 魏小林[2] 马履翱[1] 张宇[2] 

机构地区：[1]中国电力科学研究院,北京100055 [2]中国科学院力学研究所,北京100190

出　　处：《过程工程学报》2009年第4期625-633,共9页The Chinese Journal of Process Engineering

基　　金：中国科学院知识创新工程领域前沿项目基金资助;中国电力科学研究院气力输送试验室能力完善与提升项目资助(编号:AKZ3070736)

摘　　要：基于计算流体力学理论,提出一种可用于预测双套管密相气力输送系统能耗的新方法.与以往依靠经验的计算方法不同,本工作将输送管道分为起始段与充分发展段两部分,分别进行详细的计算流体力学模拟后汇总得出整个系统的总能耗.压力梯度为750Pa/m的情况下,计算所得物料输送速率为10t/h,耗气量为290m3/h,实验所得物料输送速率为8.0t/h,耗气量240m3/h,证明本数模方法是可靠的.A new method based on CFD（computational fluid mechanics）is used to estimate the energy consumption of DTS （double-tube socket）pneumatic conveying.The whole pipeline is divided into developing and fully developed parts.After CFD simulation of both parts the overall energy consumption is calculated.The results show that under the pressure gradient of 750 Pa/m in the developed part the predicted material flow rate is 10 t/h and the measurement material flow rate 8 t/h.Meanwhile the predicted gas consumption is 290 m3/h and the measurement gas consumption 240 m 3/h.The predicted results are in fair agreement with the experimental results,suggesting that the new method is reliable and applicable.

关 键 词：计算流体力学 双套管 能耗 物料输送速率 

分 类 号：TB126[理学—工程力学]