摘要
Transmission of airborne bacteria is the main factor causing surgical site infection(SSI),which is harmful to patients′health and even lives.Numerical study is conducted on the effect of the operating table protected by horizontal laminar flow screen.Discrete phase model(DPM)is used.Numerical simulation is carried out to evaluate particle trajectories with the Lagrange approach.As a result,the protecting effect of horizontal laminar flow screen is established,and the protecting parameters of the air velocity supplied by the screen and the protecting distance are optimized.The optimized air velocity supplied by the screen should be at 0.4—0.6 m/s.And the protecting distance should be less than 1.3 m.This work provides references for the study on the depuration of operating table or room.
Transmission of airborne bacteria is the main factor causing surgical site infection （SSI）, which is harm- ful to patients＇ health and even lives. Numerical study is conducted on the effect of the operating table protected by horizontal laminar flow screen. Discrete phase model （DPM） is used. Numerical simulation is carried out to evalu- ate particle trajectories with the Lagrange approach. As a result, the protecting effect of horizontal laminar flow screen is established, and the protecting parameters of the air velocity supplied by the screen and the protecting dis- tance are optimized. The optimized air velocity supplied by the screen should be at 0.4--0.6 m/s. And the protec- ting distance should be less than 1.3 m. This work provides references for the study on the depuration of operating table or room.
基金
Supported by the National Natural Science Foundation of China(51106074)
