欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
高速流体流过弯管时，在弯管内侧面出现分离流和二次流现象，导致流体能量损失。为了降低由于流体碰撞管壁造成的能量损失，以直径300mm的管道为研究对象，设计了一种安装在弯管前端的异形扰流子，以期减小弯管处压力损失。运用计算流体力学软件FLUENT，采用RNGk-ε模型和SIMPLE算法求解不可压缩Navier-Stokes方程，在5种雷诺数下对加装不同结构参数扰流子的弯管进行全流场数值计算，分析扰流子叶片转角、叶片长度和扰流子安装距离对弯管进出口压力降的影响。结果表明：在不同雷诺数情况下，未加装扰流子弯管数值模拟结果与理论计算结果基本一致；扰流子叶片转角α和长度L均对弯管压力影响显著，能够有效降低弯管进出口压力损失。
英文摘要：
The flow separation and secondary flow occurs at the inner bending side of elbow, when the high speed liquid flows through the elbow, which leads to energy deficiency. In order to reduce the energy loss caused by impaction between liquid and tube wall, the elbow of 300 mm as the research subject, the abnormal turbolator was designed and installed in.front of elbow inlet to expect reducing pressure loss of bend. In the research, the FLUENT software was applied with the SIMPLE method and the RNG k- ε model to solve the Navier-Stokes equation and the turbolator geometric parameters （the turbolator blade angle, length of blade and mounting distance ） were explored how to impact pressure loss of bend under five different Reynolds. The results showed that under different Reynolds, the numerical simulation results were basically consistent with theoretical calculation results. The rotation angle and the vane length all had significant influence on the bend pressure loss, and they can effectively reduce the pressure loss of bend.
同期刊论文项目
同项目期刊论文
期刊信息
位置：