Determination of the laminar-turbulent transition location in numerical simulations of subsonic and transonic flows past a flat plate

Бойко, А. В.; Demyanko, K. V.; Иноземцев, А. А.; Kirilovskiy, S. V.; Nechepurenko, Yu. M.; Paduchev, A. P.; Poplavskaya, T. V.

doi:10.1134/s0869864319050019

Cited by 13 publications

(2 citation statements)

References 17 publications

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“…It was developed for external flows so it has to be adapted for use for internal flows [29]: the constant c γ,2 form the multiplier of E γ,2 in the Equation (11), was changed from 50 to 70. Additionally, in the Equation (12), the constant c θ,t , was reduced from 0.03 to 0.015.…”

Section: Governing Equationsmentioning

confidence: 99%

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Validation of Modified Algebraic Model during Transitional Flow in HVAC Duct

Nering

2021

Energies

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Airflow occurring in a ventilation duct is characterized by low velocity and hence low Reynolds number. In these conditions, either a laminar, transitional or turbulent flow will occur. Different flow conditions result in different values of the friction coefficient. To achieve the transitional flow in numerical simulation, a modified algebraic model for bypass transition (modified k−ω) was used. Numerical simulation was validated using Particle Tracking Velocimetry (PTV) in the circular channel. The modified algebraic model consists of only two partial differential equations, which leads to much faster calculation than the shear stress transport model. Results of the modified algebraic model are largely consistent with either the measurement and shear stress transport model considering laminar and transitional flow. Consistency slightly decreased in turbulent flow in relation to the model using shear stress transport method.

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Section: Governing Equationsmentioning

confidence: 99%

“…In laminar flow simulations are relatively easy to perform, for turbulent flow when using RAS, there are a set of models that solve turbulence. The most popular turbulence model is k − ωSST [11]. For simulating the transitional flow between laminar and turbulent, there is no universal model.…”

Section: Introductionmentioning

confidence: 99%