摘要
少量气体的存在对管流瞬变过渡过程的影响不容忽视。对不同初始含气率下含气管流的瞬变过程进行了试验研究 ,研究表明 ,初始含气率对瞬变有较大的影响 ,初始空隙比α0 越小 ,压力响应越剧烈 ;α0 增大时压力响应趋于滞后 ,峰值降低 ,压力波衰减得更快。在极低含气率 (α0 ≤ 0 .0 0 0 1)条件下 ,瞬变压力峰值随α0 变化不明显 ,可能出现压力峰值较初始空隙比 (α0 =0 )
The existing of a little gas or vapour content has great influence upon the hydraulic transient of pipe flow. In this paper,the transient processes of pipe flow with different initial gas holdup are researched by means of experiments, and several distinct pressure characteristics are observed. The effects of initial gas holdup on the hydraulic transient are fairly large. The less the initial void fraction (α 0) , the sharper the pressure responds. When α 0 increases ,the peak value of the response will lower ,and the attenuation of transient press is more rapid. When α 0<0.0001 ,the pressure peak varies with α 0 not noticeably. Even it can be higher than that predicted when α 0=0.
出处
《油气储运》
CAS
北大核心
2004年第4期25-28,共4页
Oil & Gas Storage and Transportation
基金
国家自然科学基金资助项目 :5 0 175 10 8
