Experimental study and numerical investigation of particle penetration and deposition in 90° bent ventilation ducts
作者： Hai Jiang , Lin Lu , Ke Sun , None
DOI: 10.1016/J.BUILDENV.2011.04.033
关键词: Computer simulation 、 Simulation 、 Anisotropy 、 Lagrangian particle tracking 、 Particle deposition 、 Mechanics 、 Magnetosphere particle motion 、 Duct (flow) 、 Computational fluid dynamics 、 Turbulence 、 Materials science
摘要: Abstract Particle deposition in a ventilation duct is severe problem as it can pose health hazards. This more evident 90° bent ducts. The exposure of particle location bend section important and useful understanding dispelling contamination. paper investigated penetration ducts numerically validated using experimental previous research data. In the numerical study, 2D turbulent flow were analyzed. Renormalized Group (RNG) k- model Lagrangian tracking model utilized to characterize gas behavior, respectively. dispersion was introduced by adopting eddy lifetime with near wall fluctuating velocity corrected take turbulence anisotropy into account. validation, pollution collected from an actual observed. rates test at 6 different Stokes numbers measured for validation. results consistent both study data obtained research.
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