Vehicle Exhaust Articles

  • Numerical simulation of turbulent dispersion on a two-way facing traffic road

    A Large Eddy Simulation (LES) model was developed to investigate vehicle-induced turbulence and its effect on turbulent dispersion. The instantaneous behaviour of vehicle exhausts and the time-space averaged distributions of flow and concentration statistics on the roadway were estimated. The patterns of mean flow are significantly different between the one-way and the two-way traffic cases. In ...

    By Inderscience Publishers

  • 3D stream and vortexes in the urban canopy layer and transport of motor vehicles exhaust gas

    Wind-tunnel experiments were conducted to investigate the transport of motor vehicle exhaust gas in the vicinity of a street. The stream and the vertical and horizontal vortexes in 2D and 3D street canyons were visualised using smoke. They were recorded by video camera and the transport of the exhaust gas by vortexes was then investigated. The vertical vortex plays a significant role in the ...

    By Inderscience Publishers

  • Theory, Modeling, and Measurements of Gas Plumes

    Abstract Spectroscopic measurements of infrared CO2 transitions in gas plumes are reported, and evaluated for their potential to yield a reliable remote sensing technique for determination of plume temperature. Measurements were made on two types of plumes: a sideways-directed plume from a vehicle exhaust, and a stack plume from a propane-burning portable plume generator. Modeling of CO2 ...

    By D&P Instruments, Inc

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