Simulation And Optimization Of CFD Airflow Organization Based On Large Space Workshop

With the development of the times and the progress of industry,in recent years,more and more high-space buildings such as large shopping malls and industrial workshops have appeared with large internal space,many equipment,large heat dissipation,and high air conditioning load.Among them,the air conditioning system undertakes the most important air conditioning function.In response to the country's call for low-carbon,energy-saving and sustainable development,the concept of green buildings was proposed.People hope to improve the indoor working environment of buildings and reduce the energy consumption of air-conditioning by improving the airconditioning system.For high-space buildings such as industrial workshops,clean laboratories,and pharmaceutical workshops,the first thing to improve the air conditioning system is to solve the problem of air distribution.This paper studies a pharmaceutical workshop.We use CFD numerical simulation and comparison methods to optimize the air supply mode.The ultimate goal is to control temperature below 25?,make the air distribution better and improve the working conditions.The specific research content and conclusions are as follows:(1)Establish a three-dimensional data model based on field survey and architectural drawings.Time-sharing measured data is deployed on site and used as boundary conditions for simulation and comparison with actual results to verify the feasibility of the CFD simulation method.(2)Propose a variety of different air supply forms,confirm that the boundary conditions remain unchanged,respectively perform simulation analysis,compare the temperature field and air velocity field distribution to select the best solution,and find the simulation deficiency through the simulated cloud diagram,and seek solutions.(3)Optimize the design for the diffusers,and replace the basic model with the "N-point momentum model".Combining a variety of evaluation indicators to better characterize the distribution of airflow.The new type of diffuser is applied to different schemes for comparative simulation analysis,and the optimal scheme is selected based on the evaluation index.(4)The four parameters of height,angle,temperature and speed are changed for multiple simulations,and the results are fitted into a mathematical model to explore the influence of various parameters on the simulation results.