TY - JOUR
T1 - Numerical studies of flows around a wind turbine equipped with flanged-diffuser shroud by using an actuator-disc model
AU - Hasegawa, Masaru
AU - Ohya, Yuji
AU - Kume, Hiroaki
PY - 2007/9
Y1 - 2007/9
N2 - Unsteady 3-D direct numerical simulations based on the finite-difference method (FDM) are carried out for flow fields around a wind turbine equipped with a flanged diffuser shroud. Generally, it is difficult to simulate numerically the flow around rotational bodies like rotors of wind turbines, because of unsteadiness due to a moving body and complex geometry. Therefore, we have devised an actuator-disc model for a wind turbine for simulating the resistance and rotational forces on fluid. Introduced those volume forces devised from the actuator-disc model into the external terms in N-S equations, the unsteady flow around a wind turbine can be simulated. The results of numerical simulations are compared with the wind tunnel tests and show a good agreement for the velocity and pressure fields.
AB - Unsteady 3-D direct numerical simulations based on the finite-difference method (FDM) are carried out for flow fields around a wind turbine equipped with a flanged diffuser shroud. Generally, it is difficult to simulate numerically the flow around rotational bodies like rotors of wind turbines, because of unsteadiness due to a moving body and complex geometry. Therefore, we have devised an actuator-disc model for a wind turbine for simulating the resistance and rotational forces on fluid. Introduced those volume forces devised from the actuator-disc model into the external terms in N-S equations, the unsteady flow around a wind turbine can be simulated. The results of numerical simulations are compared with the wind tunnel tests and show a good agreement for the velocity and pressure fields.
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U2 - 10.1299/kikaib.73.1860
DO - 10.1299/kikaib.73.1860
M3 - Article
AN - SCOPUS:37049024500
VL - 73
SP - 1860
EP - 1867
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 9
ER -