An Efficient Large Eddy Simulation Algorithm for Computational Wind Engineering: Application to Surface Pressure Computations on a Single Building.
An Efficient Large Eddy Simulation Algorithm for
Computational Wind Engineering: Application to Surface
Pressure Computations on a Single Building.
Rehm, R. G.; McGrattan, K. B.; Baum, H. R.; Simiu, E.
NISTIR 6371; 33 p. August 1999.
Available from: National Technical Information Service
(NTIS), Technology Administration, U.S. Department of
Commerce, Springfield, VA 22161.
1-800-553-6847 or 703-605-6000;
Order number: PB99-159634
wind effects; aerodynamics; simulation; pressure;
An efficient large eddy simulation algorithm is used to
compute mean surface pressure distributions on an
isolated building of various rectangular shapes. Two
incoming mean wind profiles are considered in these
computations, one uniform with height and the other
increasing as a power law with height. The second
profile accounts for flow retardation due to friction
from the surface of the earth; in neither case are
turbulent fluctuations included in the work. Mean
pressure distributions are computed for a tall building,
a cubical building and a flat building. These
computational results are compared with wind tunnel
measurements and computations performed by other
investigators. The agreement in most cases is very good
with differences of approximately twenty percent.
Whereas the computations reported by the other
investigators require supercomputers, most of our
computations have been performed on a modern workstation
and can be carried out routinely with computation times
representing a small fraction of those required by