Validation of fast fluid dynamics for room airflow

Wangda Zuo, Qingyan Yan Chen

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

13 Citations (Scopus)

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
Pages980-983
Number of pages4
Publication statusPublished - 2007
EventBuilding Simulation 2007, BS 2007 - Beijing, China
Duration: 3 Sep 20076 Sep 2007

Conference

ConferenceBuilding Simulation 2007, BS 2007
Country/TerritoryChina
CityBeijing
Period3/09/076/09/07

Keywords

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

ASJC Scopus subject areas

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

Cite this