Hydraulic design and analysis of the Saxo-type vertical axial turbine
Höfler, Edvard (Author), Gale, Janez (Author), Bergant, Anton (Author)

URLURL - Presentation file, Visit http://www.tcsme.org/Papers/Vol35/Vol35No1Paper8.pdf This link opens in a new window

The paper presents a procedure for hydraulic design and analysis of the blade geometry of a high specific speed runner of the Saxo-type double-regulated vertical axial turbine. The meridional through-flow in the passage from the conical guide vane apparatus to the draft-tube elbow is designed by a streamline curvature method (SCM). To validate the design method and predictions and to investigate the design duty point and a number of off-design operating regimes, an extensive CFD simulation inside the entire turbine water-passage is performed. The flow patterns downstream the guide vane apparatus and the runner exit flow are analyzed. The focus of the analysis is on distribution of the angular momentum alongside the turbine, as well as on its impact on the flow around the runner blades. The SCM design procedure presented in the paper proves to be a robust and accurate tool for the runner blade row design.

Keywords:hidravlične turbine, metoda ukrivljenih tokovnic, oblikovanje gonilnika, RDT, hydraulic turbine, streamlines curvature method, runner design, CFD
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 119-143
Numbering:Vol. 35, iss. 1
ISSN on article:0315-8977
COBISS.SI-ID:11820315 Link is opened in a new window
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Record is a part of a journal

Title:Transactions of the Canadian Society for Mechanical Engineering
Shortened title:Trans. Can. Soc. Mech. Eng.
Publisher:Canadian Soc. for Mechanical Engineering.
COBISS.SI-ID:10717467 This link opens in a new window

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