Influence of axial water jet size on RVR mitigation in draft tube of Francis turbineShow others and affiliations
2022 (English)In: 31st IAHR Symposium on Hydraulic Machinery and Systems 26/06/2022 - 01/07/2022 Trondheim, Norway, Institute of Physics Publishing (IOPP), 2022, no 1, article id 012027Conference paper, Published paper (Refereed)
Abstract [en]
The present work investigates the effect of the axial water jet nozzle size on the unsteady pressure fluctuations arising from RVR formation in the draft tube of a Francis turbine operating at part load. The results compare two different nozzle diameter jets for their effect on the pressure pulsations and pressure recovery in the draft tube. Simulations were carried out at four jet injections varying from 2% to 10% of the main discharge. The study also presents the changes in the net effective area and average swirl in the draft tube with the introduction of the water jet.
Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2022. no 1, article id 012027
Series
IOP Conference Series: Earth and Environmental Science, ISSN 1755-1307, E-ISSN 1755-1315 ; 1079
National Category
Fluid Mechanics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-94715DOI: 10.1088/1755-1315/1079/1/012027Scopus ID: 2-s2.0-85141778899OAI: oai:DiVA.org:ltu-94715DiVA, id: diva2:1721255
Conference
31st Symposium on Hydraulic Machinery and Systems (IAHR 2022), Trondheim, Norway, June 26 - July 1, 2022
Note
Funder: Central Power Research Institute (CPRI), India (CPR-1133-MID)
2022-12-212022-12-212025-02-09Bibliographically approved