一、模拟风洞设计与加糙模拟风洞是以大瑶山隧道为原型进行设计的。风洞断面采用截园形式,比例尺为古。断面尺寸见图一、表一。在模型与原型的相似方面,除保持几何相似以外,由于模型与原型均以空气为介质,风流运动属于稳定的有压流动,重力影响可忽略不计,所以佛汝德准则不予考虑;由于在隧道中空气流动速度一般为0.3米/秒,其雷诺 First, the simulation of wind tunnel design and rough simulation Wind tunnel is based on Dayaoshan Tunnel prototype design. Wind tunnel section using the cut-off form, the scale for the ancient. Cross-sectional size shown in Figure I, Table I. In terms of the similarity between the model and the prototype, except the geometric similarity, the Froude criterion is not considered since the model and the prototype are both air-conditioned and the steady-state pressure flow belongs to the model, The tunnel air flow rate is generally 0.3 m / s, its Renault