CFD assessments within strongly transient domains

A.A.A. Samuel, J. Hand

Research output: Contribution to conferencePaper

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42 Downloads (Pure)

Abstract

Assessments based on CFD snapshots of stable conditions within strongly transient domains do not address many aspects of performance associated with
occupant interventions, control actions or changing climate. Such domains (e.g. double skin façades) are characterised by transient flow patterns due to
changing weather patterns, actuation of dampers intermittent opening of façade windows and operation of building environmental systems. Importing boundary conditionsfrom whole building simulation is an improvement but it discounts the impact of the flow predictions on the building domain. A transient approach is suggested which is fully coupled to flow and thermal solvers for the building fabric, environmental control systems and air flow regime. The paper reviews a number of patterns of flow evolution in strongly transient domains in response to
changes in ambient conditions, damper actuation, façade openings and intermittent flow from mechanical ventilation systems.
Original languageEnglish
Pages945-951
Number of pages6
Publication statusPublished - 2007
Event10th IBPSA Conference on Building Simulation 2007 - Beijing, China
Duration: 3 Sep 20076 Sep 2007

Conference

Conference10th IBPSA Conference on Building Simulation 2007
CountryChina
CityBeijing
Period3/09/076/09/07

Keywords

  • ventilation systems
  • cfd assessments
  • building simulation

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