水动力学研究与进展B辑
水動力學研究與進展B輯
수동역학연구여진전B집
JOURNAL OF HYDRODYNAMICS
2014年
1期
114-121
,共8页
夏国栋%刘献飞%翟玉玲%崔珍珍
夏國棟%劉獻飛%翟玉玲%崔珍珍
하국동%류헌비%적옥령%최진진
helical channel%numerical simulation%flow characteristics
The CFD simulations are carried out for the flows in a horizontally oriented helical pipe with various inlet sectional liquid holdups and coil pitches ( H ) . The development of the pressure fields for the single phase air flow and the air-water two-phase flow through the helical rectangular channels is studied. The points with a higher pressure often become the position of expansion leakage. The liquid phase distribution at these points can prevent the leakage of air. It is shown that the increase of the inlet sectional liquid holdup may increase the local liquid holdup at the outmost side of the helical channel. Based on the published pressure drop correla-tion, a new modified relation for predicting the pressure drop in the helical rectangle channel is proposed.
