The perturbation method is used to solve the control equations of a three-dimensional annular flow inside a small gap. The nonlinear equations are separated into zeroth-order and first-order perturbation equations. Th...The perturbation method is used to solve the control equations of a three-dimensional annular flow inside a small gap. The nonlinear equations are separated into zeroth-order and first-order perturbation equations. The velocity and pressure distributions are solved successively by different numerical methods with the zeroth-order and first-order equation. Agreement in results is found with the present method and software ANSYS-CFX, which illustrates the applicability of perturbation method in solving complicated flow field inside small gaps.展开更多
为预测高炉环缝洗涤器(Annular Gap Scrubber,AGS)内部流场和阻力特性,采用CFD仿真方法建立AGS的二维轴对称CAE仿真模型.实测数据检验表明该模型的仿真偏差在10%以内,可以满足工程应用需求.对高炉AGS的多工况仿真结果表明,喷水引起的压...为预测高炉环缝洗涤器(Annular Gap Scrubber,AGS)内部流场和阻力特性,采用CFD仿真方法建立AGS的二维轴对称CAE仿真模型.实测数据检验表明该模型的仿真偏差在10%以内,可以满足工程应用需求.对高炉AGS的多工况仿真结果表明,喷水引起的压力损失增加约占总压差的40%～70%;水滴撞击环缝内锥壁面且撞击区域集中,易造成内锥磨损.CAE仿真得到的阻力特性已成功应用于国内首套自主研发的高炉AGS.展开更多
文摘The perturbation method is used to solve the control equations of a three-dimensional annular flow inside a small gap. The nonlinear equations are separated into zeroth-order and first-order perturbation equations. The velocity and pressure distributions are solved successively by different numerical methods with the zeroth-order and first-order equation. Agreement in results is found with the present method and software ANSYS-CFX, which illustrates the applicability of perturbation method in solving complicated flow field inside small gaps.
文摘为预测高炉环缝洗涤器(Annular Gap Scrubber,AGS)内部流场和阻力特性,采用CFD仿真方法建立AGS的二维轴对称CAE仿真模型.实测数据检验表明该模型的仿真偏差在10%以内,可以满足工程应用需求.对高炉AGS的多工况仿真结果表明,喷水引起的压力损失增加约占总压差的40%～70%;水滴撞击环缝内锥壁面且撞击区域集中,易造成内锥磨损.CAE仿真得到的阻力特性已成功应用于国内首套自主研发的高炉AGS.
