Undergraduate Research & Mentoring Program

Document Type

Poster

Publication Date

5-2017

Subjects

Buildings -- Energy conservation, Sustainable buildings, Civil engineering -- Environmental aspects, Boundary layer (Meteorology) -- Effect on urban structures

Abstract

Understanding the interactions between the atmospheric boundary layer and urban structures provides insights into emerging problems such as green building design as well as dispersion and deposition of pollutants on urban structures. Characterization of deposition velocity dependence through the naphthalene sublimation method on model urban structures is conducted herein where the analogous fundamental transport mechanisms of momentum and mass transport is obtained via mass of naphthalene transferred. Via wind tunnel experiments, results show that deposition velocity of naphthalene from urban structures increases with increased number of urban structures ahead of the point of investigation. This is attributed to the wakes shed from prior elements, thus increasing flow turbulence leading to the increase of convective mass transfer. It is of interest to also perform a parametric variation to obtain functional forms on the parameter yielding mass transfer/deposition velocity.

Persistent Identifier

http://archives.pdx.edu/ds/psu/20277

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