Improvements of fast fluid dynamics for simulating air flow in buildings

Mingang Jin, Wangda Zuo, Qingyan Chen

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Fast fluid dynamics (FFD) can potentially be used for real-time indoor air-flow simulations. This study developed two-dimensional fast fluid dynamics (2-D FFD) into three-dimensional fast fluid dynamics (3-D FFD). The implementation of boundary conditions at the outlet was improved with a local mass conservation method. A near-wall treatment for the semi-Lagrangian scheme was also proposed. This study validated the 3-D FFD with five flows that have features of indoor air flow. The results show that the 3-D FFD can successfully capture the three dimensionality of air-flow and provide reliable and reasonably accurate simulations for indoor air flows with a speed of about 15 times faster than current computational fluid dynamics (CFD) tools.

Original languageEnglish (US)
Pages (from-to)419-438
Number of pages20
JournalNumerical Heat Transfer, Part B: Fundamentals
Issue number6
StatePublished - Jan 1 2012

ASJC Scopus subject areas

  • Numerical Analysis
  • Modeling and Simulation
  • Condensed Matter Physics
  • Mechanics of Materials
  • Computer Science Applications


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