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自激振荡射流的实验研究及振荡腔内流动数学模型的探讨 被引量:5

EXPERIMENTAL RESEARCH ON AUTOEXCITATION JET FLOW AND A DISCUSSION ON FLOWING MATHEMATICAL MODEL IN OSCILLATION CAVITY
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摘要 从钻井泵经过钻柱内部输送到钻头喷嘴的流体是一种瞬态流动,存在着压力行波,使从普通喷嘴射出的流体有一定程度的脉动。当这种流体经过自激振荡射流喷嘴轴对称空腔后,初始振荡的频率与腔内扰动波的频率相接近时,整个流体的振荡被迭加、放大,最后在腔室出口处产生被调制了的振荡射流。文章按波动理论原理,建立自激振荡射流腔室内流体压力和速度的数学模型,并采用接近钻头实际喷嘴直径和增大喷嘴盒尺寸,进行扩大振荡腔室的射流实验研究。 Fluid is conveied to bit nozzel through drill string from pump is a transient state flowing with pressure wave, which makes the fluid jetted out from nozzel has certain pulsation. After the fluid passed the axial symmetry cavity of autoexcitation jet nozzel and when initial oscillation frequency approximates to the one of disturbance wave in the cavity, the oscillation of the whole fluid is superposed and amplified. Finally, modulated oscillation jet flow is produced at the cacity exit. In the light of wave theory principle, the mathmatical model of fluid pressure and velocity in the cavity of autoexcitation jet flow is set up and the jet flow experimental research is done by approximating the actural diameter of the nozzel and enlarging the size of nozzel box to widen the oscillation cavity.
机构地区 西南石油学院
出处 《天然气工业》 EI CAS CSCD 北大核心 1994年第6期41-44,共4页 Natural Gas Industry
关键词 自激振荡射流 谐振腔 喷嘴 冲击压力 数学模型 钻井泵 autoexcitation jel flow,oscillation cavity, nozzel, impact pressure, wave, mathematical model.
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  • 1汪志明,沈忠厚.自激振荡气蚀射流喷管内水声学理论及其应用[J].水动力学研究与进展(A辑),1994,9(3):318-324. 被引量:4
  • 2(美)PM莫尔斯 杨训仁 等译.理论声学[M].北京:科学出版社,1986..
  • 3HABIB M A, ATTYA A M,E A I,et al. Convective Heat Transfer Characteristics of Laminar Pulsating Pipe Air Flow[J]. Heat and Mass Transfer,2002,38:221-232.
  • 4HEMIDA A N, SABRY M N,ABDEL-RAHIM A. Theoretical Analysis of Heat Transfer in Laminar Pulsating Flow[J].Heat and Mass Transfer,2002,45:1767-1780.
  • 5MOSCHANDREOU T,ZAMIR M.Heat Transfer in a Tube with Pulsating Flow and Constant Heat Flux[J].Heat and Mass Trarsfer,1997,40(10):2461-2466.
  • 6GUO Z X,SUNG H J. Analysis of the Nusselt Numberin Pulsating Pipe Flow[J]. Heat and Mass Trarsfer, 1997,40(10):2486-2489.
  • 7Moschandreou T and Zamir M.Heat Trander in a tube with pulsating flow and constant heat flux[J] .Int J Heat and Mass Transfer,1997,40(10) :2461 - 2466.
  • 8Guo Z X and Sung H J. Analysis of the Nusselt Number in pulsating pipe flow[J].Int J Heat and Mass Transfer,1997,40(10):2486-2489.
  • 9Guo ZX and Sung HJ.Analysis of the Nusselt Number in pulsating pipe flow[J]. Int J Heat and Mass Transfer, 1997,40(10):2486- 2489.
  • 10Habib M A,Attya A M and Eid A I et al. Convective Heat trander Characteristics of Laminar pulsating pipe air flow [ J ] .Heat and Mass Transfer,2002,38:221 - 232.

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