山东大学学报（工学版）
山東大學學報（工學版）
산동대학학보（공학판）
JOURNAL OF SHANDONG UNIVERSITY(ENGINEERING SCIENCE)
2013年
5期
93-97
,共5页
振荡翼%俯仰轴位置%相位差%升力%俯仰力矩%能量捕获
振盪翼%俯仰軸位置%相位差%升力%俯仰力矩%能量捕穫
진탕익%부앙축위치%상위차%승력%부앙력구%능량포획
oscillating airfoil%location of the pitching axis%phase difference%lift%pitching moment%energy extraction
采用Fluent求解绕二维振荡翼层流流场的非定常、不可压缩Navier-Stokes方程，将域动网格策略用在滑移交界面内流体域，使之与翼一起运动，该方法可保证核心区域网格质量。研究了Re＝1100、θ0＝76.33°、y0＝5、k＝0.88时，俯仰轴位置对NACA0015振荡翼气动特性和能量捕获性能的影响，以及升沉---俯仰相位差和俯仰轴位置对系统的耦合影响。结果表明，俯仰轴位置会影响振荡翼的升力特性、俯仰力矩特性及能量捕获性能，当系统因俯仰轴位置偏离平均压力中心而造成能量捕获性能下降时，改变升沉---俯仰相位差可改善系统的能量捕获性能。
採用Fluent求解繞二維振盪翼層流流場的非定常、不可壓縮Navier-Stokes方程，將域動網格策略用在滑移交界麵內流體域，使之與翼一起運動，該方法可保證覈心區域網格質量。研究瞭Re＝1100、θ0＝76.33°、y0＝5、k＝0.88時，俯仰軸位置對NACA0015振盪翼氣動特性和能量捕穫性能的影響，以及升沉---俯仰相位差和俯仰軸位置對繫統的耦閤影響。結果錶明，俯仰軸位置會影響振盪翼的升力特性、俯仰力矩特性及能量捕穫性能，噹繫統因俯仰軸位置偏離平均壓力中心而造成能量捕穫性能下降時，改變升沉---俯仰相位差可改善繫統的能量捕穫性能。
채용Fluent구해요이유진탕익층류류장적비정상、불가압축Navier-Stokes방정，장역동망격책략용재활이교계면내류체역，사지여익일기운동，해방법가보증핵심구역망격질량。연구료Re＝1100、θ0＝76.33°、y0＝5、k＝0.88시，부앙축위치대NACA0015진탕익기동특성화능량포획성능적영향，이급승침---부앙상위차화부앙축위치대계통적우합영향。결과표명，부앙축위치회영향진탕익적승력특성、부앙력구특성급능량포획성능，당계통인부앙축위치편리평균압력중심이조성능량포획성능하강시，개변승침---부앙상위차가개선계통적능량포획성능。
The Fluent was used to solve the unsteady incompressible 2D Navier-Stokes equations for laminar flow a-round the airfoil.A domain dynamic mesh strategy was used on fluid domain within sliding interface to make it move with the airfoil.The strategy could ensure the mesh quality of core zone.The influence of the location of the pitching axis on the NACA0015 oscillating airfoil in aerodynamic characteristics and energy extraction performance, and the cou-pled effects of the location of the pitching axis and the phase difference between the two motions on the system were inves-tigated with a Reynolds number of 1 100, a pitching amplitude of 76.33°, a heaving amplitude of one chord, a reduced frequency of 0.88.The results showed that, the location of the pitching axis would influence lift characteristics, pitching moment characteristics and energy extraction performance of an oscillating airfoil.When the energy extraction perform-ance of the system declined for the location of the pitching axis deviating from the average center of pressure, the energy extraction performance could be improved by changing the phase difference between the pitching and heaving motions.
