Study On Basic Theory And Key Technology Of Tent Strucyure Fan Blowing

The tent is a portable, temporary place to shelter from the wind, rain, heat, cold,not only be used for military training camp and combat, but also be used in the field ofengineering construction and temporary shelter. At present, the wind resistanceperformance of the membrane structure of tent detection method using equivalent staticwind load test, Due to the scene measured data gaps, simplified calculation test windload according to the current specification, not considering the structure analysis ofvibration and air fluid-structure interaction effect caused by the additional load, the testresult accuracy is questionable; In addition, the loading system need special design,production difficulties, poor universality. Therefore this paper on the basis of tentstructure size and use environmental characteristics, in view of the new array blowingfan test methods at home and abroad, a consistency test environment conditions, the airblower array flow field test system design and test the wind environment qualityevaluation method three aspects research work, research results can be as a reference forrelevant departments to establish such a testing system of our country. This article mainresearch content and results are:1. Based on similarity theory and analysis of atmospheric boundary layer theory,study of the natural environment and the air blower array the consistency between testenvironment conditions. Results show that the model test as well as the mechanicalsimilarity criterion is mainly two kinds of wind field as the Reynolds number; Full scaletest consistency condition is: the average wind velocity profile, turbulence intensityprofile similar to that of pulsating wind spectrum similarity and the turbulence integralscale are similar.2. A type axial flow fan SFG7-4and XDAJ-7.1type of biaxial rotating jet fan flowfield analysis of field measurement and numerical simulation; Finished fan array testing system design work. Full scale test when the natural environment and the air blowerarray blowing test environment consistency condition compared the analysis resultsshow that the supremacy of31single fan and array of staggered under the10-11-10fan,vertical center spacing of1.10m height and the air blower array center distance is2.95m, the fan flow field in10m section, forming the flow field features stable area is about9.0m×3.5m, compared with2kinds of roughness area’s wind field characteristics,average wind speed profile deviation by an average of8.1%; Turbulence intensityprofile above average1.5times; compared with the target spectrum (Karman spectrum)there is a certain error, turbulence integral scale deviation of7.05%~12.9%respectively.3. Probes into the new array blowing fan flow field test system of qualityassessment methods, and analyzes the test technology scheme analysis, the fan flowfield quality index array are the recommended value.