Degree Type

Thesis

Date of Award

2008

Degree Name

Master of Science

Department

Aerospace Engineering

First Advisor

Fred L. Haan, Jr.

Second Advisor

Partha P. Sarkar

Third Advisor

Tom I-P Shih

Abstract

Atmospheric boundary layers for open, suburban, and urban terrain were simulated in the Iowa State University Aerodynamic-Atmospheric Boundary Layer (AABL) Wind and Gust Tunnel using stationary turbulence generating obstacles. The individual and combined effects of the obstacles were analyzed in order to simplify the simulation of additional boundary layers in the future.;The mechanical bypass duct gusting system of the AABL facility was used to generate various gusts within smooth and turbulent flows. An exploration of the gust-generating system led to the selection of types of gusts that were studied further. Analysis of the gust velocity data using wavelet theory demonstrated that the gust events had no measureable effect on the turbulence intensity or Reynold's stresses within the atmospheric boundary layers.

DOI

https://doi.org/10.31274/rtd-180813-16565

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Emily C. Jones

Language

en

Proquest ID

AAI1453150

OCLC Number

237049936

ISBN

9780549542209

File Format

application/pdf

File Size

86 pages

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