5Schmitz S. Reducing Pump Noise in Cooling Tower Applica- tions [ J ]. World pump, 2004, (9) :24 - 29.
6Langthjem M A, Olhoff N. A Numerical Study of Flow-in- duced Noise in a Two-dimensional Centrifugal Pump [ J ]. Part I :Hydrodynamics. Jounal of Fluids and Structures, 2004, (19) :349 - 368.
7Langthjem M A, Olhoff N. A Numerical Study of Flowinduced Noise in a Two-dimensional Centrifugal Pump [ J ]. Part 1I : Hydroacoustics. Jounal of Fluids and Structures ,2004, (19) : 369 - 386.
8Dong R, Chu S, Katz J. Effect of Modification to Tongue and Impeller Geometry on Unsteady Flow, Pressure Fluctua- tions, and Noise in a Centrifugal Pump [ J ]. Journal of Tur- bomahinery, 1997, (119) :506 - 515.
9Spence R, Teixeira J A. Investigation into Pressure Pulsa- tions in a Centrifugal Pump Using Numerical Methods Supported by Industrial Tests[J]. Computers and Fluids,2007, ( 37 ) :690 - 704.
10Simpson H C,Clark T A,Weir G A. Atheoretical Investiga- tion of Hydraulic Noise in Pumps[J]. Journal of Sound and Vibration, 1967, ( 5 ) :456 - 488.
