Abstract

In operating rooms with unidirectional air flow a wake is formed below the light. The influence of the geometry on the dimension of the wake and the age of air were investigated by means of validated numerical simulations as well as experimental measurements. The vertical dimension of the wake caused by the circular surgical light was 1.08 m in height. With an air-permeable shape, it could be reduced to 0.38 m (brim) to 0.28 m (centre). A more open design increased the dilution within the recirculating area and resulted in a shorter residence time of contaminants.

中文翻译：

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由不同形状的手术灯引起的层流扰动

摘要

在具有单向气流的手术室中，在灯光下方形成尾流。通过经过验证的数值模拟和实验测量，研究了几何形状对尾流尺寸和空气年龄的影响。由圆形手术灯引起的尾流垂直高度为 1.08 m。具有透气的形状，它可以减少到 0.38 m（边缘）到 0.28 m（中心）。更开放的设计增加了再循环区域内的稀释度，并导致污染物的停留时间更短。