Validation of fast fluid dynamics for room airflow

Wangda Zuo, Qingyan Yan Chen

Research output: Contribution to conferencePaperpeer-review

7 Scopus citations

Abstract

In some emergencies, such as fire or accidental release of chemical/biological agents in buildings, it is very useful to simulate the flow on real time or even faster than real time so that proper measures can be taken to minimize casualties. The traditional computational fluid dynamics (CFD) simulation of fire or transient contaminant transport in buildings is accurate but too time consuming, such as by using unsteady Reynolds averaged Navier-Stokes equations (URANS) and large eddy simulation (LES). On the other hand, multizone flow network modeling is fast, but its accuracy is poor. Therefore, a new CFD technology, named Fast Fluid Dynamics (FFD), was developed. The FFD is faster than traditional CFD, and more accurate than multizone modeling. This paper shows the validation of the FFD through three cases: (1) flow in a lid-driven cavity; (2) flow in a plane channel; and (3) flow in a ventilated room. The results conclude that the FFD method can simulate the flows faster than real time, although some discrepancies exist between the numerical results and experimental data. The discrepancies are acceptable for the emergency management.

Original languageEnglish (US)
Pages980-983
Number of pages4
StatePublished - Dec 1 2007
EventBuilding Simulation 2007, BS 2007 - Beijing, China
Duration: Sep 3 2007Sep 6 2007

Other

OtherBuilding Simulation 2007, BS 2007
CountryChina
CityBeijing
Period9/3/079/6/07

Keywords

  • Fast fluid dynamics (FFD)
  • Real-time simulation
  • Semi-lagrangian

ASJC Scopus subject areas

  • Computer Science Applications
  • Building and Construction
  • Architecture
  • Modeling and Simulation

Fingerprint Dive into the research topics of 'Validation of fast fluid dynamics for room airflow'. Together they form a unique fingerprint.

Cite this