HEVACOMP CFD MODULE for Building Services Applications
Hevacomp (formed in 1981) is the firmly established UK market leader in building services design
and CAD software. Hevacomp software is acknowledged as the industry standard, with over 2000 user
sites – the largest user base of any developer in the building services field. In line with the
company's vision to bring Dynamic Thermal Simulation and CFD analysis within easy reach of every
engineer, Hevacomp has joined forces with CHAM to link Hevacomp's new Dynamic Thermal Simulation
package to CHAM’s PHOENICS/FLAIR CFD solver.
The room geometry information, including the surface temperatures and convection coefficients,
together with room objects like diffusers and heat sources, is created parametrically in Hevacomp's
new Simulation module. The complete input file is then passed to the CFD solver provided by CHAM.
A key issue is the accurate modelling of diffusers and grilles. CHAM in co-operation with Hevacomp
has implemented diffuser objects based on ASHRAE research.
The new Hevacomp Simulation package enables detailed heat gain simulations with detailed shadow
analysis, heat loss simulations, summertime temperatures including mixed mode ventilation studies,
overheating frequencies and extensive energy consumption and carbon calculations studies.
Prices start from £500 per year.
For further information, see
Hevacomp Dynamic Simulation.
Hevacomp incorporates a number of air distribution devices with manufacturers' data. It has an
equipment library for localising heat gains, as well as a furniture library. When a CFD module 'project
file' is written by Hevacomp, all the boundary conditions are automatically set-up as a result of the
Design Simulation (i.e. convection coefficients and surface temperature as well as the room surfaces
geometry). The user does not have to set these manually.
The simulation engine for both PHOENICS/FLAIR and Hevacomp's CFD module is the same. The pressure,
velocity and temperature variables are solved and reported in the same manner.
Whilst the Hevacomp CFD module is a very fast and efficient process for producing the CFD input file,
the shape and complexity of the room model is defined both the options solely available within Hevacomp's
CAD environment, as the PHOENICS/FLAIR (VR Editor) pre-processor is disabled in this version.
Similarly, Hevacomp's CFD simulations solutions are currently limited to a single room. With
PHOENICS/FLAIR any shape with any complexity can be setup, incorporating both internal and external
For users with additional flow-modelling requirements, CHAM offers a natural progression from Hevacomp's
CFD module onto PHOENICS / FLAIR. Such requirements might include, but are not limited to:-
- Creating complex geometry, or importing from CAD;
- Problems involving external flow scenarios, wind profiling or pressure loading;
- Cases involving pollution, fire hazard, radiation, smoke, or sprinklers;
- Extended HVAC studies, or ISO-standard comfort indices; etc.
Hevacomp customers purchase PHOENICS/FLAIR under preferential terms!
A description of PHOENICS / FLAIR can be found in the FLAIR brochure or
contact Sales@cham.co.uk for further details.
The Spring Edition, will be circulated in the near future.
The Summer Edition is in progress.
If you would like to contribute please send articles (in word format only) to email@example.com.
ACFDA, CHAM's Agent in North America has submitted a paper and presentation for the 2014 ASSE_MEC Conference. These give a brief review of recent validated PHOENICS CFD models applied for risk and safety assessments (flammable gas release and dispersion , atmospheric pollutant dispersion and two-phase plumes from cooling towers and other industrial installations).
These materials show the PHOENICS modeling capabilities and underline the beneficial use of CFD in risk and safety analyses. More information on the models and training/consulting options can be obtained by contacting firstname.lastname@example.org
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