Analysis of the Francis turbine upper-part-load pulsation Part I – Experimental results vs. hydro-acoustic model

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/240/5/052022 ◽

2019 ◽

Vol 240 ◽

pp. 052022

Author(s):

P K Dörfler

Keyword(s):

Experimental Results ◽

Francis Turbine ◽

Acoustic Model ◽

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Flow characteristics and influence associated with inter-blade cavitation vortices at deep part load operations of a Francis turbine

Journal of Physics Conference Series ◽

10.1088/1742-6596/813/1/012029 ◽

2017 ◽

Vol 813 ◽

pp. 012029 ◽

Author(s):

K. Yamamoto ◽

A. Müller ◽

A. Favrel ◽

C. Landry ◽

F. Avellan

Keyword(s):

Flow Characteristics ◽

Francis Turbine ◽

Deep Part ◽

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Influence of runner cone profile and axial water jet injection in a low head Francis turbine at part load

Sustainable Energy Technologies and Assessments ◽

10.1016/j.seta.2021.101810 ◽

2022 ◽

Vol 50 ◽

pp. 101810

Author(s):

Subodh Khullar ◽

Krishna M. Singh ◽

Michel J. Cervantes ◽

Bhupendra K. Gandhi

Keyword(s):

Water Jet ◽

Francis Turbine ◽

Jet Injection ◽

Part Load ◽

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Numerical and experimental evidence of the inter-blade cavitation vortex development at deep part load operation of a Francis turbine

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/49/8/082005 ◽

2016 ◽

Vol 49 ◽

pp. 082005 ◽

Author(s):

K Yamamoto ◽

A Müller ◽

A Favrel ◽

C Landry ◽

F Avellan

Keyword(s):

Experimental Evidence ◽

Francis Turbine ◽

Deep Part ◽

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Analysis of the Francis turbine upper-part-load pulsation Part II – Mechanism of self-excitation

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/240/5/052023 ◽

2019 ◽

Vol 240 ◽

pp. 052023

Author(s):

P K Dörfler

Keyword(s):

Francis Turbine ◽

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Numerical simulations of the cavitation phenomena in a Francis turbine at deep part load conditions

Journal of Physics Conference Series ◽

10.1088/1742-6596/656/1/012074 ◽

2015 ◽

Vol 656 ◽

pp. 012074 ◽

Author(s):

J Wack ◽

S Riedelbauch

Keyword(s):

Numerical Simulations ◽

Francis Turbine ◽

Deep Part ◽

Part Load ◽

Load Conditions

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Numerical simulation of the unsteady cavitating flow in a Francis turbine draft tube at Upper-Part-Load (UPL) conditions

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/774/1/012089 ◽

2021 ◽

Vol 774 (1) ◽

pp. 012089

Author(s):

Z. Liu ◽

A. Favrel ◽

W. Takahashi ◽

K. Miyagawa

Keyword(s):

Numerical Simulation ◽

Cavitating Flow ◽

Francis Turbine ◽

Part Load ◽

Unsteady Cavitating Flow

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Measurements of Cavitation Compliance in the Draft Tube Cone of a Reduced Scale Francis Turbine Operating at Part Load

Proceedings of the 10th International Symposium on Cavitation (CAV2018) ◽

10.1115/1.861851_ch133 ◽

2018 ◽

pp. 696-701

Keyword(s):

Francis Turbine ◽

Part Load ◽

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Numerical investigation of inter‐blade cavitation vortex for a Francis turbine at part load conditions

IET Renewable Power Generation ◽

10.1049/rpg2.12096 ◽

2021 ◽

Vol 15 (6) ◽

pp. 1163-1177

Author(s):

Longgang Sun ◽

Pengcheng Guo ◽

Xingqi Luo

Keyword(s):

Numerical Investigation ◽

Francis Turbine ◽

Part Load ◽

Load Conditions

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Experimental and numerical analysis of turbulent velocity fluctuations in a Francis turbine draft tube in part load operation

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/240/2/022032 ◽

2019 ◽

Vol 240 ◽

pp. 022032 ◽

Author(s):

A Frey ◽

O Kirschner ◽

S Riedelbauch ◽

R Jester-Zuerker ◽

A Jung

Keyword(s):

Numerical Analysis ◽

Turbulent Velocity ◽

Francis Turbine ◽

Velocity Fluctuations ◽

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Investigation and Control of Backflow Ahead of a Shrouded Inducer

Journal of Fluids Engineering ◽

10.1115/1.2820697 ◽

1998 ◽

Vol 120 (3) ◽

pp. 549-555

Author(s):

C. Offtinger Brissaud ◽

C. Henry ◽

R. Morel ◽

F. Spettel

Keyword(s):

Adverse Effects ◽

Experimental Results ◽

Pressure Pulsations ◽

Pump Performance ◽

Part Load ◽

Simple Geometry ◽

Incorporating a backflow recirculator is a way to reduce part load instabilities of inducers. Experimental results demonstrate that two devices with simple geometry considerably soften pressure pulsations in suction and discharge pipes associated with part load instabilities, even at low NPSH conditions and low flowrates. This is accomplished with negligible adverse effects on pump performance.

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