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Wind Loads on High Rise Building Structures
Gary L. Jones
The objective of this project was to analyze and simulate the behavior of
structures such as variable trusses with interaction with incompressible fluid
flow. There was significant progress in modeling of various structural shapes
using a geometric modeler. Several 3dimensional meshes were created on the
Cray C90 using an automatic mesh generator. The refinement of each mesh had
to be adjusted in order to ensure accurate results without surpassing memory
quotas. The preliminary results were obtained for wind flow past a high rise
building. The building has a circular cross section with constant radius. The
load distribution along the building was obtained using the incompressible
NavierStokes fluid flow solver developed by the T*AFSM.
In this project, Mr. Jones was helped by Dr. Shahrouz Aliabadi, at that
time a research associate supervised by Tezduyar. The
computations were carried out on the massively parallel supercomputer, Cray
T3D, using unstructured mesh consisting of 144,011 nodes and 842,197
tetrahedral elements. Visual results were displayed using available software
packages.
Left: Explorer Module Used to Generate Image
Right: 3D Representation of Magnitude of Bending Moment
Part of the fluid flow solver were modified to obtain the discrete load
distribution along the subdivided surface. This load distribution was used to
calculate the bending moment as a function of height throughout the building.
The results were shown in a module of Explorer created by Mr. Jones. The load
distribution is also needed in the equation which governs the deflection of
cantilever beams.
Left: Top View of Wind Flow
Center: Pressure Distribution of Wind Load on Cylinder
Right: 3D Perspective
Methods Used
 Model and Surface mesh designed
 3D Mesh generated
 Solved for airflow using the Navier Stokes' Equations
 Calculated net forces at divided sections of the mesh
 Calculated bending moment as a function of height
 Visualized results using Explorer, Pager, and Visual3
Left: Top View of Pressure Field
Center: Pressure Distribution of Wind Load on Cylinder
Right: Side View of Pressure Field
