摘要
The turbulent flow-field characteristics in a 180° curved duct with rectangular cross-section were investigated.The profiles of tangential velocity and pressure were measured by using five-hole probe and simulated by FLUENT 6.2.The results showed that centrifugal force was generated as the fluid rotated,which contributed to the change of tangential velocity and pressure.Tangential velocity increased and pressure decreased in the section between 0° and 60° when the fluid rotation began,while tangential velocity decreased and pressure increased in the section between 60° and 180° near the inner wall.On the contrary,the tangential velocity decreased and pressure increased in the section between 0° and 60°,but tangential velocity increased and pressure decreased in the section between 60° and 180° near the outer wall.This investigation indicated that turbulent flow-field characteristics in the 180° curved duct could be understood by combined experiment measurement and numerical simulation.
The turbulent flow-field characteristics in a 180° curved duct with rectangular cross-section were investigated.The profiles of tangential velocity and pressure were measured by using five-hole probe and simulated by FLUENT 6.2.The results showed that centrifugal force was generated as the fluid rotated,which contributed to the change of tangential velocity and pressure.Tangential velocity increased and pressure decreased in the section between 0° and 60° when the fluid rotation began,while tangential velocity decreased and pressure increased in the section between 60° and 180° near the inner wall.On the contrary,the tangential velocity decreased and pressure increased in the section between 0° and 60°,but tangential velocity increased and pressure decreased in the section between 60° and 180° near the outer wall.This investigation indicated that turbulent flow-field characteristics in the 180° curved duct could be understood by combined experiment measurement and numerical simulation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2007年第12期3033-3035,共3页
CIESC Journal
基金
国家自然科学基金项目(20576074)~~
关键词
180°矩形弯管
流场
测量
数值模拟
180° curved duct with rectangular cross-section
flow field
experimental measurement
numerical simulation