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NUMERICAL-ASSISTED DESIGN OF A WIND TUNNEL USED IN THE ESTIMATION OF VOLATILIZATION FROM WATER, WASTE OR SOIL

机译:用于估算水,废物或土壤挥发度的风洞的数值辅助设计

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摘要

Numerical simulations of the flow inside two wind tunnel geometries used for determining emission volatilization have been conducted. The flow pattern was examined in a plane close to the emitting surface. A reduced surface, characterizing the low velocity zones in this plane, has been defined. The proposed geometry modification, consisting of a convergent/divergent system, decreases the low velocity regions by a factor ranging between 2 and 3.5. Large vortices present in the conventional configuration are almost eliminated. The new velocity distribution, close to the emitting surface, is more uniform and should therefore generate a more efficient mass transfer to the flowing air.
机译:进行了两个用于确定排放挥发的风洞几何形状内部流动的数值模拟。在靠近发射表面的平面中检查流动模式。已经定义了减小的表面,该表面表征了该平面中的低速区域。提议的几何形状修改由收敛/发散系统组成,将低速区域减小了2到3.5之间的倍数。常规配置中存在的大涡旋几乎被消除了。靠近发射表面的新速度分布更加均匀,因此应产生更有效的质量传递给流动的空气。

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