论文标题
立方体的常规阵列中的阻力分布及其与交叉通气的关系：理论和实验分析
The drag force distribution within regular arrays of cubes and its relation to cross ventilation: theoretical and experimental analyses
论文作者
论文摘要
提出和分析了一组新型的风洞测量，沿高度H和平面区域指数羔羊（在立方体之间的气隙）等于0.028（5H）至0.69至0.69（0.2H）的平面区域指数LAMBDAP（气隙）沿对齐的空间分布。比较了两种不同类型的测量：一种使用标准负载池法获得阻力的类型，另一种类型是通过测量迎风和背风外墙之间的压力差来估计阻力的另一种类型。结果表明，对于较低的羔羊（0.028和0.0625），阻力几乎均匀分布，对于兰姆多= 0.11的第二行，拖曳力在第二排下降高达50％，并且在较大的羔羊级（0.25至0.69）中，其力量急剧下降，而力最大程度地降低到第一行。因此，对于最低的羔羊，拖曳力通常以阻力区为对应于阵列的总额叶区域，而对于大型羔羊，阻力区域对应于第一行的面积。通过评估阻力的驱动压力，分析进行扩展以估算横泄通气，以此作为应用此类测量结果的一个例子。
A novel set of wind tunnel measurements of the drag force and its spatial distribution along aligned arrays of cubes of height H and planar area index lambdap (air gap between cubes) equal to 0.028 (5H) to 0.69 (0.2H) is presented and analysed. Two different types of measurements are compared: one type where the drag force is obtained using the standard load cell method, another type where the drag force is estimated by measuring the pressure difference between windward and the leeward facades. Results show that the drag force is nearly uniformly distributed for lower lambdap (0.028 and 0.0625), it decreases up to 50% at the second row for lambdap=0.11, and it sharply decreases for larger lambdap (from 0.25 to 0.69) where the force mostly acts on the first row. It follows that for the lowest lambdap the drag force typically formulated as a drag area corresponds to the total frontal area of the array, whereas for large lambdap the drag area corresponds to the area of the first row. By assessing the driving pressure for ventilation from the drag force, the analysis is extended to estimate the cross ventilation as an example of application of this type of measurements.
