3.5 m×2.5 m风洞大气边界层被动模拟实验研究  

PASSIVE SIMULATION EXPERIMENT OF ATMOSPHERIC BOUNDARY LAYER IN 3.5 m×2.5 m WIND TUNNEL

作　　者：周兴 李建兰[2] Demetri Bouris 

机构地区：[1]华中科技大学中欧清洁与可再生能源学院,武汉430074 [2]华中科技大学能源与动力工程学院,武汉430074 [3]希腊雅典国立技术大学机械工程学院,雅典999028

出　　处：《太阳能学报》2018年第2期342-349,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51375183)

摘　　要：为实现风洞大气边界层的准确模拟，提出一种综合多个参数几何比例一致性分析的风洞大气边界层被动模拟实验。实验布置8种不同湍流发生装置布局的工况以模拟不同地形，通过对平均风速、湍流强度、湍流积分尺度以及功率谱随高度变化的测量，开展考虑模拟地面粗糙度与大气边界层高度比例因子一致性的大气边界层模拟研究，并对比分析尖劈和粗糙元对模拟流场的影响。实验研究表明：在3．5m×2．5m风洞中建立的模拟大气边界层流场，可实现符合ASCE7标准比例因子为1：200的A地形及符合RLB—AJJ标准比例因子为1：300的B地形模拟。To achieve the accurate simulation of simulation experiment of wind tunnel ABL based atmospheric boundary layer （ABL） in wind tunnel, the passive on the consistency analysis of geometric scale factor of multiple parameters was presented. Experiments were performed on eight different turbulence generating device layouts to simulate different terrains. The mean wind speed, turbulence intensity, turbulence integral scale and power spectrum change along height were measured, and the simulation research of atmospheric boundary layer （ABL） considering the coherence of scale factor between simulated surface roughness and ABL height was carried out. Besides, the effect of wedge and roughness element on the simulated flow field was compared and analyzed. The experiment results showed that the simulated flow field of ABL set up in 3.5 m×2.5 m wind tunnel can achieve A terrain type simulation of ASCE7 and B terrain type simulation of RLB-AJJ under the standard scale factor 1 ： 200 and 1 ： 300, respectively.

关 键 词：大气边界层 风洞 实验 地面粗糙度 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]