CFD技术在实验室气流组织设计中的应用

Application of CFD in airflow design for lab

采用CFD技术对纳米釉材料研发实验室内的气流组织和微尘污染进行了研究.研究中采用k-ε模型,并用AIRPAK软件进行求解.对多种实验室的气流组织方案进行了数值模拟,并选择优化方案建造了实验室.对改造后实验室内的硫化氢质量浓度进行了数值模拟和现场实测,结果表明:实验室内的硫化氢质量浓度由改造前的16.5 mg/m3降为1.66 mg/m3,实验柜附近硫化氢气体质量浓度的实测值与数值模拟的计算值4.2 mg/m3相近,表明数值模拟的结果是准确的,证明了CFD技术是实验室设计的可靠辅助工具.

How to use the CFD method as an assistant tool to study the airflow and cross-contamination in a glaze material research lab was illustrated. The Reynolds-averaged Navier-Stokes equations governing the flow are solved using a finite-volume code AIRPAK. We established many plans for the lab and these plans were simulated through the CFD, From the numerical results, a best plan was chosen and establish the lab. The concentration of HE S in the reconstructed lab was tested. The result indicated that the concentration of HES decreased from 16.5 mg/m^3 to 1.66 mg/m^3 and the concentration of HES round the labcabinet was 4.2 mg/m^3 which was close to the numerical results. It is concluded that the CFD method was a good tool to help us design for lab.