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Static pressure distributions for rotor upwind part tendency of the flow field to rotate. In fluid mechanics the vorticity pseudovector describes the local spinning motion of the flow near some point. Mathematically, in the Cartesian coordinate system, this vector can be defined as: ⃗ í µí¼” = ∇ × ⃗ í µí±£ = ( í µí¼•í µí±£ í µí± § í µí¼•í µí±¦ − í µí¼•í µí±£ í µí±¦ í µí¼•í µí± § í µí¼•í µí±£ í µí±¥ í µí¼•í µí± § − í µí¼•í µí±£ í µí± § í µí¼•í µí±¥ í µí¼•í µí±£ í µí±¦ í µí¼•í µí±¥ − í µí¼•í µí±£ í µí±¥ í µí¼•í µí±¦ ) (7)

Static pressure distributions for rotor upwind part tendency of the flow field to rotate. In fluid mechanics the vorticity pseudovector describes the local spinning motion of the flow near some point. Mathematically, in the Cartesian coordinate system, this vector can be defined as: ⃗ í µí¼” = ∇ × ⃗ í µí±£ = ( í µí¼•í µí±£ í µí± § í µí¼•í µí±¦ − í µí¼•í µí±£ í µí±¦ í µí¼•í µí± § í µí¼•í µí±£ í µí±¥ í µí¼•í µí± § − í µí¼•í µí±£ í µí± § í µí¼•í µí±¥ í µí¼•í µí±£ í µí±¦ í µí¼•í µí±¥ − í µí¼•í µí±£ í µí±¥ í µí¼•í µí±¦ ) (7)

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The main purpose of this work is to analyze the usefulness of the active cell model (ACM) developed by the author of this article to estimate the flow field around a single-bladed vertical-axis wind turbine (VAWT) with the Darrieus-type rotor. The obtained flow velocity fields were compared with the experimental values taken from the literature ava...

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Citations

... where V c is the mesh cell volume whereas F x and F y are the aerodynamic blade loads. The ACM approach is described in more detail in two publications: Rogowski (2018) and Rogowski and Rogowska (2018). The aerodynamic blade load functions are taken from Rogowski (2019). ...
... Vectors of aerodynamic forces and velocities (a) and ACM concept (b)The idea of the Actuator Cell Model (ACM) lies in the possibility of studying the velocity field in the rotor area at a given function of aerodynamic blade loads. The previous two publications of the author showed the effectiveness of this method for the case of a one-bladed H-Darrieus rotor(Rogowski, 2018;Rogowski and Rogowska, 2018). In this article, the latest particle image velocimetry (PIV) studies byTescione et al. (2016) are used to compare the results obtained with the ACM model. ...
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This paper analyzes the instantaneous and averaged velocity field in the area of the Darrieus wind turbine. The analyzed two-dimensional rotor model consists of two NACA 0018 airfoils and a rotating shaft. The working parameters of the rotor correspond to moderate aerodynamic loads of the blades. The research has been carried out with an innovative method called the Actuator Cell Model. The initial results obtained were compared with the author's earlier results obtained with the SST k-ω model and with experimental studies taken from the literature.