Approximate simulation of storm water runoff over pervious pavement. Issue Volume 18:Issued 3(2017) (4th March 2017)

• Record Type: Journal Article
• Authors: Zhang, Jiong; Cui, Xinzhuang; Tang, Weize; Lou, Junjie
• Is Part Of: International journal of pavement engineering. Volume 18:Issued 3(2017)
• Page Start: 247
• Page End: 259
• Publication Date: 2017-03-04
• Subjects: Pervious pavement -- storm water run-off -- turbulent flow -- approximate simulation -- numerical simulation; Pavements -- Design and construction -- Periodicals; Highway engineering -- Periodicals; 625.805
• DOI: 10.1080/10298436.2015.1065993
• Languages: English
• ISSNs: 1029-8436

Abstract

Abstract: The approximate simulation of storm water run-off over pervious pavement is carried out using both experimental method and numerical simulation. The slope and flow rate changeable flume and uniform porous media are used to approximately simulate the pervious pavement. A 3D computational fluid dynamics – discrete element method is used for numerical simulation of interaction between pervious pavement and fluid. The effects of variation of parameters, including inflow rate, infiltration outflow rate and slope on surface run-off are analysed. The average flow velocity within the surface run-off region and shear velocity increases with the increasing permeability of pervious pavement. The turbulent kinetic energy distribution along depth in the free-flow region is more uniform than empirical relationship for flow over impermeable surfaces. Equations for flow depth and velocity over pervious pavement have been deduced. The results of this study are helpful for the hydraulic design of pervious concrete pavement.