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Research of soundspeed in fluid-conveying pipes

DU Da-hua,ZHANG Ji-tong (Shanxi Engine Design Inst.,Xi’an 710100,China)  
In this paper,the effect of distributing flexibility produced by pipe-wall’s elasticity and uniform air entrainment in the liquid to the fluid soundspeed has been studied,used by a waterhammer method to measure soundspeed. This research shows that the effects of pipe-wall’s elasticity and air entrainment in the liquid should be considered when calculating the soundspeed precisely.
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