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# assn5 - MIT OpenCourseWare http/ocw.mit.edu 1.020 Ecology...

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MIT OpenCourseWare http://ocw.mit.edu 1 .020 Ecology II: Engineering for Sustainability Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .

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MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Civil and Environmental Engineering 1.020 Ecology II: Engineering for Sustainability Problem Set 5 – Particulate transport Due: 5PM Weds. April 16, 2008 A. Introduction In this problem set you will be simulating particulate emissions from a single vehicle moving along a straight road with a cross wind. You will develop a particle tracking model to visualize the particulate plume and to compute atmospheric concentrations. B. Vehicle Description The road in question extends along the x axis for 120 km. The vehicle is moving at 60 km hr -1 Particulate emissons are generated continuously at a rate of E = 2 gm min -1 . A wind is blowing towards the +y direction at V y = 30 km hr -1 . The x and y dispersivities are: D x = D y = 25 km 2 hr -1 Simulation time = 2 hr.
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