Paper Conference

Proceedings of SimBuild Conference 2010: 4th conference of IBPSA-USA


Improvements on the Fast Fluid Dynamic Model for Indoor Airflow Simulation

Wangda Zuo, Qingyan Chen
National Air Transport Center of Excellence for Research in the Intermodal Transport Environment (RITE), School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA

Abstract: Recently, a Fast Fluid Dynamics (FFD) method was proposed for real-time airflow simulation in buildings. As an intermediate model between nodal models and Computational Fluid Dynamics (CFD), the FFD is fast and informative. This paper reports our efforts on improving the accuracy of FFD model. The linear interpolation in semi-Lagrangian solver for advection equation can cause significant numerical diffusion. To minimize numerical diffusion, we proposed a hybrid interpolation. Our simulation results show that the hybrid scheme can significantly improve the accuracy.
Pages: 539 - 546