Numerical Simulation And Optimization Of Data Center Airflow Organization

This paper deals with the problem of the low-efficiency distribution of airf low and the resulting cooling in a data center, using Computational fluid dyna mics to make a series of attempts,for enhaning the focus on accuracy and impr oving the airflow organization provide insight into various factors, which improv es the airflow organization and the corresponding cooling.Firstly, the research status of data room airflow distribution and the numer ical simulation method adopted by this paper are briefly described,and propose a new modeling method with server details,verify the reliability of the new mod eling method and the traditional modeling method by using numerical simulatio n results,and then make a furgther study.Then use the single channel floor sidewall model as the research object,expl ore the influence of cooling effect of different cabinet arrangement.By listing the 6 groups of arrangement models, comparative the temperature field, a ir inlet and air outlet temperature,as a conclusion,in this kind of room arrangem ent, the cooling effect is the best when the server arranged evenly and keep void s, at the same time, when servers with different power placed inside the cabi net, the high power server is recommended to place in the lower position of the cabinet, and verified through two groups of modelFinally, aiming at the air flow organization of the whole room,focuses on the impact of raised-floor height, cold aisle width, porosity of perforated tiles, and the use the RHI index to evaluate each kind of air flow organization.The results showed that there is a good effect of overhead floor height to increase room temperature distribution uniformity, when the overhead floor height is increased to a certain extent (0.5m), it achieve the level of stability, no longer increases with increasing height; the larger porosity of floor could not improve the cooling effect, but make up the cabinet average temperature, It shows that it is wrong to improve the blowing effect by increasing the porosity; increase the cold width can definitely improve the cooling effect,when the channel width is greater than 1.3m, enhance the effect is not obvious, when space allows the situation can be appropriately increasing the cooling channel width.By increasing the cooling channel width can definitely improve the cooling effect, when the channel width is greater than 1.3m, the effect is not obvious, so,when space allows, we can increase the cooling channel width appropriately.The highlight of this paper is put forward a new modeling method of server details emboding in the model, different with the traditional "black box" model, comparing with the experimental values, the agreement degree is higher, the simulation result is more accurate. The limitations of this paper is only for single channel floor side air the form and arrangement of engine room, in real life it is much more complex, but it can still give energy-saving designing suggestions for data room provided certain.