Computational Fluid Dynamics (CFD)

Computational Fluid Dynamics (CFD) is a sophisticated simulation technique that mathematically simulates fluid flow and heat transfer. CFD plays an important role in designing an energy-efficient, comfortable and healthy green building.

GreenBIM Engineering uses CFD tools for architectural engineering analyses which can be classified into three major categories:

1. Mechanical ventilation

Simulation of the air flow in spaces that are mechanically ventilated. Examples include:

  • HVAC system studies
  • Datacenters
  • Laboratory spaces
  • Contaminant or smoke extraction systems

 

2. External flow or wind loading

Simulation of the air flow and reluctant structural loading on a building. Examples include:

  • Flow over and around buildings
  • Effect of obstructions on the external air flow
  • Wind loading on building façades

 

3. Natural ventilation

Study of air movement as a result of pressure or temperature differences. There are two types of natural ventilation occuring in buildings:

  • Wind driven ventilation
  • Buoyancy-driven ventilation

 

CFD Software

GreenBIM Engineering uses Autodesk Simulation CFD 2014 which provides accurate fluid flow and thermal simulation tools to help predict system performance, optimize design and compare different scenarios during the design process. CFD analysis can be a useful tool in order to:

  • Calculate Predicted Mean Vote (PMV) to assess the impact of the room design on the occupants thermal comfort
  • Analyse effectiveness of HVAC systems
  • Develop passive heating/cooling/ventilation strategies such as natural ventilation
  • Study impact of building shape and obstructions on external wind loading