Abstract
This study aimed to investigate the effect of the incidence angle on the aerodynamic characteristics of the flow around a Savonius wind rotor. Six configurations with different incidence angles θ = 0°, θ = 30°, θ = 60°, θ = 90°, θ = 120°, and θ = 150° were studied. To this end, we have developed a numerical simulation using the computational fluid dynamic (CFD) code “Fluent.” The considered numerical model is based on the resolution of the Navier–Stokes equations together with the k–ε turbulence model. These equations were solved by a finite volume discretization method. Particularly, we were interested in visualizing the velocity field, the mean velocity, the static pressure, the dynamic pressure, the turbulent kinetic energy, the dissipation rate of the turbulent kinetic energy, and the turbulent viscosity. Our results confirm that the variation of the incidence angle has an effect on the local characteristics. Our numerical results were compared with those obtained by previous findings. The comparison showed a good agreement and confirmed the efficiency of our numerical method.
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Abbreviations
- C p :
-
Coefficient of the power, dimensionless
- C 1ε :
-
Constant of the k–ε turbulence model, dimensionless
- C 2ε :
-
Constant of the k–ε turbulence model, dimensionless
- C μ :
-
Constant of the k–ε turbulence model, dimensionless
- C Ms :
-
Static torque coefficient
- d :
-
Rotor diameter, m
- e :
-
Bucket thickness, m
- F i :
-
Force components, N
- G k :
-
Production term of turbulence, kg m−1 s−3
- k :
-
Turbulent kinetic energy, J kg−1
- Ms:
-
Static torque
- P :
-
Pressure, Pa
- u i :
-
Velocity components, m s−1
- u i′:
-
Fluctuating velocity components, m s−1
- ε :
-
Dissipation rate of the turbulent kinetic energy, W kg−1
- μ :
-
Dynamic viscosity, Pa s
- μ t :
-
Turbulent viscosity, Pa s
- ρ :
-
Density, kg m−3
- σ k :
-
Constant of the k–ε turbulence model
- σ ε :
-
Constant of the k–ε turbulence model
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Frikha, S., Driss, Z., Kchaou, H., Abid, M.S. (2018). Study of the Incidence Angle Effect on a Savonius Wind Rotor Aerodynamic Structure. In: Driss, Z., Necib, B., Zhang, HC. (eds) CFD Techniques and Energy Applications. Springer, Cham. https://doi.org/10.1007/978-3-319-70950-5_8
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DOI: https://doi.org/10.1007/978-3-319-70950-5_8
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