NUMERICAL SIMULATION OF FLOW OVER AN AIRFOIL FOR SMALL WIND TURBINES USING THE γ-REθ MODEL

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SHAH HASEEB; MATHEW SATHYAJITH; LIM CHEE MING

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Journal: INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING Year:2015 | Volume:6 | Issue:4 Page(s): 419-429

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Title

NUMERICAL SIMULATION OF FLOW OVER AN AIRFOIL FOR SMALL WIND TURBINES USING THE γ-REθ MODEL

Author(s)

SHAH HASEEB | MATHEW SATHYAJITH | LIM CHEE MING | Issue Writer Certificate

Keywords

AIRFOIL

LOW REYNOLDS NUMBER FLOWS

LAMINAR SEPARATION BUBBLE

SMALL WIND TURBINE

Abstract

The mechanism of the LAMINAR SEPARATION BUBBLE and the laminar-turbulent transition over the AIRFOIL UBD5494 is simulated in ANSYS-FLUENT using the transition gamma-Re q model at Reynolds number 6 × 104, 1 × 105, 1.5 × 105, 2 × 105 and 3 × 105. Modified constants of the Reynolds momentum thickness are incorporated in the model. The aerodynamic performance of the AIRFOIL is also examined against the flow behaviour. Simulation results show that with the increase in angle of attack, LAMINAR SEPARATION BUBBLE moves towards the leading edge and at the same time contracts in size. It starts to expand after reaching the foremost point of the leading edge and then bursts, resulting in flow turbulence and stall. With decreasing Re, the size of the LAMINAR SEPARATION BUBBLE is found to be increasing and its progress towards the leading edge is noticed to be slower. The numerical results also indicated that UBD5494 AIRFOIL has enhanced lift-to-drag ratio and desirable stall characteristics which are distinctively advantageous for the better performance of SMALL WIND TURBINE rotors.

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APA: Copy

SHAH, HASEEB, MATHEW, SATHYAJITH, & LIM, CHEE MING. (2015). NUMERICAL SIMULATION OF FLOW OVER AN AIRFOIL FOR SMALL WIND TURBINES USING THE γ-REθ MODEL. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, 6(4), 419-429. SID. https://sid.ir/paper/327153/en

Vancouver: Copy

SHAH HASEEB, MATHEW SATHYAJITH, LIM CHEE MING. NUMERICAL SIMULATION OF FLOW OVER AN AIRFOIL FOR SMALL WIND TURBINES USING THE γ-REθ MODEL. INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING[Internet]. 2015;6(4):419-429. Available from: https://sid.ir/paper/327153/en

IEEE: Copy

HASEEB SHAH, SATHYAJITH MATHEW, and CHEE MING LIM, “NUMERICAL SIMULATION OF FLOW OVER AN AIRFOIL FOR SMALL WIND TURBINES USING THE γ-REθ MODEL,” INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENTAL ENGINEERING, vol. 6, no. 4, pp. 419–429, 2015, [Online]. Available: https://sid.ir/paper/327153/en

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