Research on optimization of air distribution in branch boxes in residential fresh air systems
Based on Fluent software,the model of ground supply fresh air branch box is established.The numerical simulation method is used to analyze the influence of different external branch pipe number N,external branch pipe spacing L,inlet pipe radius r and other factors on the air volume of each branch of the fresh air branch box,air volume distribution coefficient K,air volume distribution consistency coefficient β and the internal flow field of the box.Then the orthogonal test method is used to analyze the effect of multi-factor combination on the consistency of air volume distribution.The results show that the influence of the number of external branch pipes on the air volume distribution consistency of the fresh air branch box is more significant than that of the branch pipe spacing and the inlet pipe radius.The increase of the number of branch pipes will lead to the worse air volume distribution consistency,but under the mutual influence of multiple factors,the appropriate combination will improve the air volume distribution consistency of the fresh air branch box,and it is the best under the condition of N=6,L=50 mm,r=100 mm.The research results provide strong technical support for the rational design of the fresh air branch box.
Fluent softwarefresh air branch boxorthogonal testair volume distribution consistency
万方数据
维普
