A simple way to model air pollution over a city is using a box model that assumes complete mixing and limited capability for the pollution to disperse horizontally or vertically except in the direction of the prevailing winds. Consider the air over a city to be a box: The city is 100 km wide and 50 km long in the direction of wind. The inversion layer is at an altitude of 1.0 km. Clean air is blowing into the box with a speed of 4 m/s (see Figure below). Suppose an air pollutant with decay rate constant k = 0.20/hr is emitted within the box at a total rate of 10.0 kg/s. Calculate the steady-state air pollutant concentration (in the unit of kg/m³) if the air is assumed to be completely mixed and state the assumptions used 100 km Wind direction 1 km 50 km

A simple way to model air pollution over a city is using a box model that assumes complete mixing and limited capability for the pollution to disperse horizontally or vertically except in the direction of the prevailing winds. Consider the air over a city to be a box: The city is 100 km wide and 50 km long in the direction of wind. The inversion layer is at an altitude of 1.0 km. Clean air is blowing into the box with a speed of 4 m/s (see Figure below). Suppose an air pollutant with decay rate constant k = 0.20/hr is emitted within the box at a total rate of 10.0 kg/s. Calculate the steady-state air pollutant concentration (in the unit of kg/m³) if the air is assumed to be completely mixed and state the assumptions used 100 km Wind direction 1 km 50 km

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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