摘要
利用试验和数值模拟方法,对通风空调中低雷诺数90°弯管阻力力系数进行了研究,分析了管道中的压力分布和速度分布,探讨了空气通过局部构件产生阻力损失的变化规律和机理,测量了局部构件对上下游管段的影响长度,找出了对单个局部构件阻力损失机理和变化规律。
To reveal the pressure loss mechanism, turbulent flows in fittings with one bend were studied by means of solving the three-dimensional Reynolds-averaged Navier-Stokes equations and experiments, and analyzing pressure and velocity distributing in ducts. The affecting distance was measured. This study not only analyzes the hydrodynamic characteristics in combining bends more deeply, but also provides scientific reference for future study of mechanism and prediction.
出处
《山东建筑大学学报》
2007年第2期126-130,共5页
Journal of Shandong Jianzhu University
关键词
弯管
压力损失
局部阻力系数
bends
pressure loss
local loss coefficients
