Large-eddy simulations of a swirling flow in a model Francis turbine
2021 ◽
Vol 2119
(1)
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pp. 012026
Keyword(s):
Low Load
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Abstract We performed Large-eddy simulations of the flow in a model air Francis turbine in a range of low-load regimes with a swirler rotating at fixed frequency. All investigated regimes revealed the presence of coherent helical vortex structure in the draft tube: the precessing vortex core. We identified the frequency of this instability and obtained mean flow velocity fields to be utilized in further works.
2007 ◽
Vol 583
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pp. 99-122
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2021 ◽
Keyword(s):
Keyword(s):
2019 ◽
Vol 21
(2)
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pp. 318-334
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Keyword(s):
Keyword(s):
2010 ◽
Vol 29
(4)
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pp. 321-335
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Keyword(s):