Numerical Simulation And The Comfort Analysis Of Airflow Distribution Of The Large Space Building

Nowadays,Large space building has become more common worldwide architecturalform, it is a product of the times, but also reflects the higher demand people to architecturalaesthetics, interior decoration, indoor thermal comfort environment and other factors.According to different functions and architectural forms, each of which has its special largespace structures, load, energy consumption, etc., in the air conditioning system airflow designshould also consider the distribution of temperature, humidity and wind speed, size and powerconsumption of comfort a combination of factors such as good or bad. Airflow design of theair conditioning systems at the end of the space has become a large building air conditioningdesign focus and difficulty. With the computational fluid dynamics (CFD, ComputationalFluid Dynamics) for rapid development, with the CFD numerical simulation modelingtechniques to predict airflow tall space, thermal comfort and optimized airflow designapproach has been more mature.In this paper, we select a large space conference hall in public buildings in Beijing for thestudying. First, according to the architectural design space size, basic air-conditioning designparameters, air conditioning system design programs, to select physical models andmathematical models. The desired research using AIRPAK2.1software for thermal comfortand air distribution air conditioning system design of three-dimensional numerical simulation.By comparing a range of different conditions, we select a more comprehensive analysis of thepreferred solutions and apply them to practical engineering. Which is calculated using themathematical model to simulate two-equation k-ε turbulence model. Then, the text carriedout on the large space meeting room. And then, comparison with the computational modelsunder the same conditions. The CFD method is validated to be credible and can optimize airconditioning design in large space.The research results show that:Firstly, Outlet air velocity and air patterns to form a stable, comfortable airfloworganizations have important implication. In this thesis, a comparative analysis of differentoperating conditions,Considering, improved the program and used two kinds ofcombination of airflow patternsThen, Through the different conditions, different types of numerical simulation ofairflow and qualitative analysis, quantitative comparison, the final consolidated all the factorsselected air distribution more reasonable solution, providing a favorable reference to actualengineering design;Thirdly, The project through the summer air conditioning conditions measured valuesand comparative analysis of numerical simulation, CFD numerical simulation to verify thereliability and proven by the FLUENT software developed for the simulation of indoorthermal comfort environment AIRPAK2.1software can optimization design of tall buildings category space conditioning systems, predict airflow distribution, thermal comfort evaluationindicators.