Models used for the wind tunnel testing of structures are commonly fabricated using additive manufacturing techniques, such as 3D printing; however, the corners of the models can sometimes be rounded with some radius of curvature $R$, rather than be perfectly sharp. Should the edge curvature of these models be too large, the aerodynamics of these models can be significantly altered leading to unrealistic wind load estimations. To address this issue, a series of wind tunnel tests were conducted on a generic low-rise building model with varying edge radii to: (1) determine the effect of edge curvature on surface pressures and (2) determine a limit on edge radii of wind tunnel models, above which, the aerodynamics of the model is no longer representative of that around the full-scale building. It was found that increasing edge radius produces a continual change in pressure fields within the vicinity of separation bubbles and conical vortices (depending on wind direction). Considering the current experimental setup, changes in mean pressure fields exceed measurement uncertainty when the edge radius $R/H>~$1.3%, where $H$ is building height. The subsequent changes in pressure fields also lead to discrepancies in area-averaged pressures, however, the effects appear to be limited to small areas near building edges whose surface areas are below about $2m^2$ for a low-rise building with a roof height of $4m$ and plan dimensions of $10m\times 15m$.

通常使用增材制造技术（例如3D打印）来制造用于结构风洞测试的模型。但是，模型的角有时可以以一定的曲率半径倒圆$\mathrm{[R}$，而不是完全清晰。如果这些模型的边缘曲率太大，则这些模型的空气动力学特性可能会发生重大变化，从而导致不切实际的风荷载估算。为了解决这个问题，对具有低边半径的通用低层建筑模型进行了一系列风洞测试，以：（1）确定边曲率对表面压力的影响，以及（2）确定边沿半径的极限。风洞模型，在此之上，模型的空气动力学不再代表完整规模建筑物的空气动力学。已经发现，增加的边缘半径会在分离气泡和圆锥形涡旋附近产生压力场的连续变化（取决于风向）。考虑到当前的实验设置，$\mathrm{[R}/H>〜$1.3％，其中 $H$是建筑物的高度。压力场的后续变化也会导致面积平均压力的差异，但是，这种影响似乎仅限于建筑物边缘附近的小区域，其表面区域低于$\mathrm{2个}{米}^{\mathrm{2个}}$ 用于屋顶高度为的低层建筑 $4米$ 和计划尺寸 $10米\times 15米$。