中文摘要：

大气中的可吸入颗粒物对有机体危害很大,已经成为世界范围内重要的大气污染源。在可吸入颗粒团聚室内引入双射流,通过双气体射流在团聚室内形成大小不同尺度涡旋,促进流场可吸入颗粒团聚。实验结果表明：10μm以下的可吸入颗粒在单射流作用下减少了21.9%,在双射流作用下减少了58.0%。异侧双射流的团聚清除率高于同侧双射流的清除效率,异侧双射流管间距增加更有利于可吸入颗粒的团聚。双射流管出口Re增加,颗粒质量清除率增大;但不同粒径颗粒的单级团聚效率则与粒径密切相关。颗粒的质量清除率随着主气流与射流流量比增大呈现逐渐减小的趋势。

英文摘要：

Inhalable particles are dangerous to organism,and become important pollution factor of atmospheric environment around the world. In the experiment,the double jets were fixed on the agglomeration chamber,which could enforce the flow to develop the turbulent fluid field. The agglomeration process in turbulent fluid was investigated. The experimental results showed the reduction rate of inhalable particles was 21. 9% and 58. 0% under the action of single gas jet and double gas jet,respectively. The double gas jet fixed on different side of the chamber could improve the agglomeration more efficiently.Increasing the space in jet entrance could increase the removal efficiency. The total removal efficiency increased with increasing the jet exit Reynolds number and that was found to be S type. However,the single particle removal was influenced by the particle size in turbulent gas jet fluid and was found to be concave type. The incremental flow ratio between main gas and jet gas could lead to the reduction of particle removal.