TY - JOUR
T1 - Wake interaction of aligned wind turbines over two-dimensional hills
AU - Siguenza-Alvarado, Diego
AU - Pulletikurthi, Venkatesh
AU - Quinones, Jhon J.
AU - Nelson, Clarice
AU - Cheng, Shyuan
AU - Doosttalab, Ali
AU - Chamorro, Leonardo P.
AU - Castillo, Luciano
N1 - Publisher Copyright:
© 2023 Author(s).
PY - 2023/10/1
Y1 - 2023/10/1
N2 - An experimental investigation was carried out to explore the interaction and wake statistics of model wind turbines operating individually and in pairs over two-dimensional hills with varying heights. The hills shared a sinusoidal shape and extended L / D = 20 in the streamwise direction, where D represents the diameter of the turbine rotor. The peak heights of the hills were H / D = 0 , 0.5, 1, and 1.5. The first turbine was located at the beginning of the hill development, and the second turbine was positioned halfway between the first and the hill's peak, downwind. The flow in the intermediate wake regions was characterized using particle image velocimetry, focusing on the recovery mechanisms of streamwise momentum on the windward side of the hills, ranging from gentle to steep-up slopes. The results indicate that the advection terms play a more significant role than turbulence in the wake recovery mechanism with steeper hill slopes. Associated reduced turbulence levels are attributed to flow acceleration, which led to a higher power availability at the top of the hills.
AB - An experimental investigation was carried out to explore the interaction and wake statistics of model wind turbines operating individually and in pairs over two-dimensional hills with varying heights. The hills shared a sinusoidal shape and extended L / D = 20 in the streamwise direction, where D represents the diameter of the turbine rotor. The peak heights of the hills were H / D = 0 , 0.5, 1, and 1.5. The first turbine was located at the beginning of the hill development, and the second turbine was positioned halfway between the first and the hill's peak, downwind. The flow in the intermediate wake regions was characterized using particle image velocimetry, focusing on the recovery mechanisms of streamwise momentum on the windward side of the hills, ranging from gentle to steep-up slopes. The results indicate that the advection terms play a more significant role than turbulence in the wake recovery mechanism with steeper hill slopes. Associated reduced turbulence levels are attributed to flow acceleration, which led to a higher power availability at the top of the hills.
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U2 - 10.1063/5.0168961
DO - 10.1063/5.0168961
M3 - Article
AN - SCOPUS:85175337407
SN - 1070-6631
VL - 35
JO - Physics of fluids
JF - Physics of fluids
IS - 10
M1 - 105142
ER -