Numerical studies of flow around a wind turbine equipped with a flanged-diffuser shroud using an actuator-disk model

Yuji Ohya, Takanori Uchida, Takashi Karasudani, Masaru Hasegawa, Hiroshi Kume

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Unsteady 3-D direct numerical simulations based on the finite-difference method (FDM) were performed for flow fields around a wind turbine equipped with a flanged-diffuser shroud. Generally, it is difficult to numerically simulate the flow around rotating bodies such as the blades of wind turbines because of the unsteady flow generated by moving bodies with complex geometry. Therefore, we have devised an actuator-disk model for a wind turbine for simulating the drag and rotational forces exerted on the fluid by the wind turbine. By incorporating the body forces derived from the actuator-disk model into the external terms in the Navier-Stokes equations, the unsteady flow around a wind turbine can be simulated. The results of numerical simulations were compared with the results from wind tunnel experiments and showed good agreement for the velocity and pressure fields.

Original languageEnglish
Pages (from-to)455-472
Number of pages18
JournalWind Engineering
Volume36
Issue number4
DOIs
Publication statusPublished - Aug 1 2012

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Actuator disks
Wind turbines
Unsteady flow
Direct numerical simulation
Finite difference method
Navier Stokes equations
Turbomachine blades
Wind tunnels
Drag
Flow fields
Fluids
Geometry
Computer simulation
Experiments

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

Cite this

Numerical studies of flow around a wind turbine equipped with a flanged-diffuser shroud using an actuator-disk model. / Ohya, Yuji; Uchida, Takanori; Karasudani, Takashi; Hasegawa, Masaru; Kume, Hiroshi.

In: Wind Engineering, Vol. 36, No. 4, 01.08.2012, p. 455-472.

Research output: Contribution to journalArticle

Ohya, Yuji ; Uchida, Takanori ; Karasudani, Takashi ; Hasegawa, Masaru ; Kume, Hiroshi. / Numerical studies of flow around a wind turbine equipped with a flanged-diffuser shroud using an actuator-disk model. In: Wind Engineering. 2012 ; Vol. 36, No. 4. pp. 455-472.
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