Impact of surface roughness on CFD performance prediction of francis turbines: Grid convergence analysis and experimental validation across variable operating conditions

This study presents a comprehensive numerical investigation of a medium-head Francis turbine performance using computational fluid dynamics with emphasis on grid sensitivity analysis and wall roughness effects. Four progressively refined meshes ranging from 3.28 to 8.77 million cells were evaluated...

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Bibliografiske detaljer

Principais autores:	Thaithat Sudsuansee, Suwat Phitaksurachai, Chakrit Udomsin, Suebwit Sathornsamritphon, Thanakorn Chalermrat, Sukrit Chandravisut, Noppong Sritrakul, Yodchai Tiaple
Format:	Artigo
Sprog:	Inglês
Udgivet:	Elsevier 2026-03-01
Serier:	International Journal of Thermofluids
Fag:	Francis turbine Grid convergence index Wall roughness modeling CFD validation Turbomachinery performance
Online adgang:	http://www.sciencedirect.com/science/article/pii/S2666202726000236
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