Ancient Egyptian obelisks have been carved thousands of years ago and survived many earthquakes and wind storms. This study examines the aerodynamic characteristics and the response of two of the tallest and slenderest ancient Egyptian obelisks to boundary layer winds using a two-phase methodology. The firstphase involved preparing computational fluid dynamics (CFD) models for the twoobelisks with different angles of projection to wind. The variations in the windpressure coefficient and the forces on the obelisks have been studied for differentprojection angles, different reference velocities and along the height of eachobelisk. Within the second phase structural analysis was performed subjecting eachobelisk to a wind load under different angles of loading. The results show that whensubject to boundary layer winds, the pressure coefficient on the surface and thestresses within the obelisks vary significantly with the angle of attack and dimensions of the obelisk.

古埃及方尖碑已在数千年前雕刻而成，经受了多次地震和风暴的考验。这项研究使用两相方法检查了空气动力学特性以及两个最高和最细长的古埃及方尖碑对边界层风的响应。第一阶段涉及为具有不同风向投影角度的双方尖碑准备计算流体动力学 (CFD) 模型。研究了不同投影角度、不同参考速度和沿每个方尖碑高度的风压系数和方尖碑受力的变化。在第二阶段进行结构分析，使每个方尖碑在不同的载荷角度下承受风载荷。结果表明，当受到边界层风的影响时，