Improvement of the SST γ-Reθt transition model for flows along a curved hydrofoil

Abstract

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Investigation on stall characteristics of marine centrifugal pump considering transition effect

“…The γ-Re θt transition model proposed by Menter (Menter et al, 2004), is the most used in simulations, which consists of the Re θt (transition momentum thickness Reynolds number) transport equation and the γ (intermittent factor) transport equation. Ye (Ye et al, 2021(Ye et al, , 2022, Delafin (Delafin et al, 2014), Zeng (Zeng et al, 2021) and Zhang (Zhang et al, 2019) obtained hydrodynamic properties of the hydrofoil by using the model. The γ transition model (Menter et al, 2015) and algebraic transition model (Menter et al, 2022) proposed by Menter also work very well for engineering problems, but the model show a stronger sensitivity to mesh resolution in streamwise direction.…”

Numerical Investigation on Suction Flow Control Technology for a Blunt Trailing Edge Hydrofoil

“…In the coupling of all turbulence models, the SST γ-Re θt , in addition to the SST k-ω turbulence model, is the most widely utilized, not just for aerodynamics transition and separation prediction [28] but also in the field of hydraulics. Rahman [29], Zeng [30,31], and Ye [32,33] used the SST γ-Reθt to the boundary laminar flow of hydrofoil, which transits along the middle and low Reynolds numbers, and the transition of hydrofoil hydrodynamics is analyzed. However, the model needs to solve the batch factor equation and the transition criterion equation at the same time, and the calculation is slightly cumbersome.…”

Investigation on Stall Characteristics of Centrifugal Pump with Guide Vanes

“…The stall of a centrifugal pump is an unstable flow phenomenon when it operates at low flow rate [1][2][3][4]. The stall phenomenon was first discovered by Stenning in a centrifugal compressor test [5], and in-depth research was carried out in this field [6,7].…”