CAVE Visualization of the Massing of Large Urban Multi-purpose Buildings and their Unsteady Air Flowfields determined by the Detached Eddy Simulation Technique
Award year: 2001-2002
The main objective of the first phase of the project is to develop a direct-manipulation computer program that will enable visualization of the massing arrangements of large multi-purpose building programs. In large cities, such programs typically consist of office, retail, residential, parking, and mechanical spaces accompanied by a plaza level. Past designs have been concerned primarily with visual massing, and have consequently tended to fail on the haptic level. The purpose of this project is to be able, in future, to predict wind characteristics to the end of better architectural designs and urban environments. This phase of the project will require Joy Malnar's collaboration with NCSA Senior Research Programmer, William Sherman in order to develop a 3D Visualization with Direct-Manipulation Tool for use in the CAVE facility, that permits analysis of architectural massing at street level.
For the second phase of this project, it is proposed to simulate flowfields (including the unsteady three-dimensional vortex structures) around complex building structures using the Detached Eddy Simulation (DES) technique. This technique was incorporated into WIND, a parallel unsteady finite-volume code which has been validated with a backward-facing step flows and separated airfoils. It provides high-fidelity fluid dynamics. This code can then be used to investigate the aerodynamics of a particular architectural design. In addition, a new virtual reality rendering technology (developed under a 2000-2001 NCSA Faculty Fellows Program) can be used to allow immersion into scenes with the external building architecture and associated fluid dynamics. The second phase of this project will require Eric Loth's collaboration with Joy Malnar and William Sherman.