Numerical Investigation of Particle Accumulation Effect Due to Human Respiration

Control of temperature and contamination in the cleanroom is one of the essential requirements for safe and risk-free surgical procedures. Surgical and surgery rooms have a remarkable cleanliness class due to biological considerations and space control. One of the factors influencing the distribution of air and,consequently, the distribution of particles is the simulation and experimentally controlled. There are two main objectives in this study: first, to investigate numerically the impact of respiration on theconcentration of particles in a cleanroom with a defined geometry, and second, to simulate the respiration and the dispersion mode of particles. It is usually necessary to reduce contaminant particles, which are potentially important resulting in capillary clogging in the course of operation in lots of hospital cleanrooms including the open-heart surgery, organ transplantation, and neurosurgery rooms. Additionally, dust particles can act as a way of diverse pathogenic bacteria and viruses, which reveals the importance of decreasing theconcentration of oversized particles. The size of bacterial species ranges between 0.6 and 6 μm, and viruses have dimensions in the range of 28-290 nanometers. It is, therefore, obvious that a 5-μm particle can contain at least 1 bacterium and 14 viruses.

کلیدواژه ها:

Cleanroom ، Particle Accumulation ، Human Respiration