Numerical Simulation Of Sand Concentration Distribution In Movable House Based On FLUENT Software

In China, the land desertification is very serious. According to the results of investigation, nearly 27% of land area is affected by desertification in our country; the loss caused by desertification is very enormous in every year. As the implementation of western development strategy in our country, the development of economic construction and focus gradually shift to the northwest, the reclamation and construction of the desert has become the most urgent and important subject in the present situation. At present, in the field of architecture, the research on the construction of the sand-driving wind in the desert is extremely rare. In this paper,through the investigation of the movable house and the surrounding wind field around the desert, and the use of large software FLUENT,numerical simulation of the movable house indoor ventilation conditions as well as the concentration of sand blowing indoor distribution. The main results are as follows:(1)Collect reasonably related literature and summary of previous research, aware the harm of sand-driving wind flow to the construction of the desert, on the basis of the theory of wind blown sand physics to learn large software FLUENT, using the software to numerical simulation of the wind field and wind field in the movable room.(2)Use the FLUENT software to simulate the indoor air flow field, using the standard model, simulation of indoor ventilation and sprayed into the sand, after the action of gravity sedimentation, the sand concentration distribution in the bottom. In order to study the distribution of sand particles in the bottom surface more accurately.The bottom surface of the movable room is divided into 5 datum planes in detail along the X direction of the side axis. Observe the change law of the highest concentration of sand on the surface with time.(3)In the case of other parameters unchanged, change the mass flow rate of sand particles in the interior of the chamber. At different mass flow rate, the change curveof the highest concentration of sand in the room with time was observed. The wind researches during the paper have instructive mean sand reference values whether in theory research or practical application.(4) Without changing other parameters fixed, the change is injected into the interior of the sand mass flow rate and speed were observed at different mass flow rate, sand versus time indoors highest concentration, and at different wind speeds,observation of sand discharge time, discharge efficiency analysis of sand. To set out further studies within the desert sand buildings have a certain engineering significance and reference value.