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Keywords: cavitation
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Proceedings Papers

Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T08A032, August 10–12, 2021
Paper No: FEDSM2021-65501
...Abstract Abstract This study experimentally investigates the statistics of wall-pressure fluctuations and their source inside attached cavitation under different cavity regimes. Experiments were conducted in the divergent section of a convergent-divergent channel at a constant Reynolds number...
Proceedings Papers

Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T08A031, August 10–12, 2021
Paper No: FEDSM2021-61746
...Abstract Abstract The article illustrates the application of Bayesian estimation to the identification of flow instabilities, with special reference to rotating cavitation, in a three-bladed axial inducer using the unsteady pressure readings of a single transducer mounted on the casing just...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A010, July 13–15, 2020
Paper No: FEDSM2020-20270
...CAVITATION IN HYDRAULIC MACHINES: MEASUREMENT, NUMERICAL SIMULATION AND DAMAGE PATTERNS Helmut Benigni 1 Institute of Hydraulic Fluid Machinery, Graz University of Technology, Kopernikusgasse 24/IV 8010 Graz, Austria 1 Contact author: helmut.benigni@tugraz.at, Tel.: 0043 316 873 7578, Tel.: 0043...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A027, July 13–15, 2020
Paper No: FEDSM2020-20144
... design method that improves pump performance at lower cost was studied. Keywords: splitter blade, CFD, optimization, cavitation, pump NOMENCLATURE Total head under non-cavitation conditions Total head under cavitation conditions Efficiency Head coefficient Flow rate coefficient Cavitation number...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A031, July 13–15, 2020
Paper No: FEDSM2020-20062
... were performed at various inlet temperature and pressure settings of the LOX pump, the resulting suction performance behaviors of the LOX pump were varied. The critical cavitation number, at which the pump head drops 3%, was considered as the main parameter for representing the pump suction performance...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A017, July 13–15, 2020
Paper No: FEDSM2020-20172
...Abstract Abstract Cavitation and choked flow conditions can occur when high-pressure drops are encounters in various types of valves, which prevent them to work properly and may cause severe erosion damage inside the valves that decrease their lifetime. Prediction of these critical conditions...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T04A006, July 13–15, 2020
Paper No: FEDSM2020-20301
...A CORRECTION TO THE BAROTROPIC MODEL OF GASEOUS CAVITATION IN CHOKED CONVERGING-DIVERGING NOZZLE FLOWS Michael Waldrop 1 , Flint Thomas 1 1 Institute for Flow Physics and Control, University of Notre Dame, Notre Dame, IN, USA ABSTRACT The Barotropic Cavitation Model describes the behavior...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A013, July 28–August 1, 2019
Paper No: AJKFluids2019-5161
.... The amplitude of pressure fluctuation at P1 (impeller inlet) is the highest among those monitoring points, where the amplitude decreases with the flow rates. The dominant frequency of pressure fluctuation at impeller under cavitation condition is the blade passing frequency (BPF). Besides, there are also N...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A014, July 28–August 1, 2019
Paper No: AJKFluids2019-5240
...CAVITATION IN CO-ROTATING TIP VORTICES J.J. Koncoski1, M.H. Krane, J.P. Welz2, D.R. Hanson, S.M. Willits3 Applied Research Laboratory at The Pennsylvania State University State College, PA R.F. Kunz4 Department of Mechanical Engineering The Pennsylvania State University State College, PA ABSTRACT...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 1: Fluid Mechanics, V001T01A041, July 28–August 1, 2019
Paper No: AJKFluids2019-5119
...Abstract Abstract In order to improve the cavitation resistance of centrifugal pump, bionic groove surface structure was arranged on the suction surface of centrifugal pump blade which is the most prone to cavitation. Numerical simulation method was used to study the influence of different...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A042, July 28–August 1, 2019
Paper No: AJKFluids2019-5360
...CAVITATION-INDUCED INTERFACE INSTABILITY OF DROPLET BETWEEN PLATES Hongchen Li 1, 2, Jingzhu Wang1, 2, Yiwei Wang1, 2*. 1 Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, No.15, Beisihuan West Road Beijing, China 2 School...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3A: Fluid Applications and Systems, V03AT03A022, July 28–August 1, 2019
Paper No: AJKFluids2019-4993
...AN OPTIMIZATION STUDY ON CAVITATION FLOW IN A STEAM TRAP VALVE Chang QIU Institute of Process Equipment, College of Energy Engineering, Zhejiang University Hangzhou, Zhejiang, P. R. China Han ZHANG SHanghai Power Equipment Research Institute Co. LTD, Shanghai, P. R. China Chen YANG, Cong-wei HOU...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A036, July 28–August 1, 2019
Paper No: AJKFluids2019-5402
...DYNAMIC CHARACTERISTICS OF BLADE SURFACE CAVITATION ON VARIOUS TYPES OF HYDROFOILS Hironori HORIGUCHI1, Masakazu TOYOSHIMA, Takuya MATSUDA, Kazuyasu SUGIYAMA Graduate School of Engineering Science, Osaka University Osaka, Japan ABSTRACT In high speed turbopumps, various types of cavitation...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3A: Fluid Applications and Systems, V03AT03A019, July 28–August 1, 2019
Paper No: AJKFluids2019-4740
...NUMERICAL SIMULATION AND VORTICITY ANALYSIS OF CAVITATING FLOW AROUND A MARINE PROPELLER BEHIND THE HULL Yun Long, Chengzao Han, Bin Ji 1 , Xinping LONG State Key Lab of Water Resources and Hydropower Engineering Science, School of Power and Mechanical Engineering, Wuhan University Wuhan, China...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A016, July 28–August 1, 2019
Paper No: AJKFluids2019-4906
...Abstract Abstract In this study, we experimentally investigated the influence of the amount of dissolved air in working fluid and the rotation speed ratio of turbine to pump elements on cavitation phenomenon in automotive torque converter. In order to directly observe the cavitation phenomenon...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A047, July 28–August 1, 2019
Paper No: AJKFluids2019-5620
...Abstract Abstract The effects of thermal cavitation on the flow instabilities developing in a three-bladed, tapered-hub, variable-pitch space turbopump inducer are described by illustrating the results of similarity experiments in water carried out at Sitael in the Cavitating Pump Rotordynamic...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A032, July 28–August 1, 2019
Paper No: AJKFluids2019-5274
...Abstract Abstract This paper presents an experimental work on dynamic characteristics of a cavitating inducer. In the present study, the focus is placed on the cavitation compliance K and the mass flow gain factor M, which are necessary for stability analysis of a propulsion system of liquid...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A027, July 28–August 1, 2019
Paper No: AJKFluids2019-5132
... of low specific speed was chosen for cavitation studies from 80% to 120% of flow rate and for three different speeds. An assessment was carried out for cavitation noise signature from those operating condition of pumps. The result of cavitation noise based on peak magnitude as well as average of noise...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A034, July 28–August 1, 2019
Paper No: AJKFluids2019-5371
... between pump performance and design parameters. In order to conduct the optimization process a response surface based optimization framework was established. Baseline was designed in previous research [1]. The inducers were 3Dprinted in ABS plastic and their wetted and cavitating characteristics were...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A074, July 28–August 1, 2019
Paper No: AJKFluids2019-5283
... improved with rectangular and square stators in terms of hydraulic efficiency than with circular stator with low flow fluctuations. Keywords: Positive displacement turbine (PDT), Computational Fluid Dynamics (CFD), Cavitation, Energy utilization, Flow fluctuations 1 Contact author: jinhyuk@kitech.re.kr...