...Longlong Yan; Bo Gao; Dan Ni; Ning Zhang; Wenjie Zhou To accurately capture the behaviors of cavitation and reveal the unsteady cavitating flow mechanism, a condensate pump inducer is numerically analyzed in a separate numerical experiment with large eddy simulation (LES) at critical cavitation...

...Petar Tomov; Loic Pora; Richard Paridaens; Théodore Magne; Mohamed Kebdani; Sofiane Khelladi; Farid Bakir The inducers increase the pressure available at the inlet of the impellers of centrifugal pumps. This technological solution may induce instabilities, such as prerotating flow at partial flow...

... to realize a more efficient and more reliable cryogenic pump. In 2010, the author and colleagues developed the world's first test facility to enable the visualization of cavitation on a rotating inducer in both cryogenic and ordinary fluids. At that time, only two reports on the flow visualization...

... inducer. The main purpose of this study is to identify, for this specific application, the most appropriate cavitation model and the associated empirical constants. Each cavitation model is reviewed in detail and the uniqueness of each model is outlined. Each cavitation model is incorporated...

... is considered to be a forced vortex, while the outer region is considered to be a free vortex. The ratio (f) of the forced vortex to the distance between the backflow-vortex center and the casing is defined. Each backflow vortex has a circulation and induces movements of all the other backflow vortices...

...Enver S. Karakas; Hiroyoshi Watanabe; Matteo Aureli; Cahit A. Evrensel In this paper, the effect of the inducer tip clearance is studied to understand its impact on the cavitating and noncavitating performance of centrifugal pumps. Helical inducers with constant pitch and with variable (progressive...

...Baofeng Yang; Bin Li; Hui Chen; Zhanyi Liu; Kaifu Xu The clocking positions between the inducer and the impeller have a certain impact on the performance of the high-speed centrifugal pump, which however, is often ignored by designers. In the present study, three-dimensional numerical simulation...

... on Cavitation in Centrifugal Pumps ,” J. Eng. Power , 87 ( 3 ), pp. 309 – 318 . 10.1115/1.3678264 [3] Cooper , P. , 1967 , “ Analysis of Single and Two-Phase Flows in Turbopump Inducers ,” J. Eng. Power , 89 (4), pp. 577 – 586 . [4] Ruggeri , S. R. , and Moore , R. S. , 1969...

...Wen-Guang Li In the inducer hydraulic design, one significantly important task is to estimate its noncavtating head; however, there is not a matured and reliable method for this presently. In this paper, a method was made for predicting the inducer head curve. The method was based on a singularity...

...Toshiya Kimura; Yoshiki Yoshida; Tomoyuki Hashimoto; Mitsuru Shimagaki Unsteady cavitation phenomena such as rotating cavitation and cavitation surge are often observed in a turbopump inducer of a rocket engine, sometimes causing undesirable oscillation of the system. Investigation...

...Nobuhiro Yamanishi; Shinji Fukao; Xiangyu Qiao; Chisachi Kato; Yoshinobu Tsujimoto Turbopump inducers often have swirling backflow under a wide range of flow rates because they are designed with a certain angle of attack even at the design point in order to attain high cavitation performance. When...

...Young-Do Choi; Junichi Kurokawa; Hiroshi Imamura Cavitation is a serious problem in the development of high-speed turbopumps, and an inducer is often used to avoid cavitation in the main impeller. Thus, the inducer often operates under the worst conditions of cavitation. If it could be possible...

...Imene Mejri; Farid Bakir; Robert Rey; Thabet Belamri The paper presents full 3D numerical simulations and experimental investigations of the cavitating flow through three axial inducers. These inducers are identified by the tip blade angle at the leading edge β 1 T = 8 , 10, and 13 deg...