Thermal Bridge Heat Transfer & Vapour Diffusion Simulation Program AnTherm Version 6.115 - 8.133 

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Calculation and Results

Click the main menu item Results and confirm with Ok the  Fine-Grid-Parameters followed by Solver-Parameters and save project's data to a project file naming it arbitrarily. You will be automatically alerted to save project's data to a file prior to simulation start to avoid any accidental data loss. If the request to save data is always shown can be set within application settings.

Within the project's data also parameters of the fine grid and precision setting for the solver are saved.

The Solver window lets you observe the progress of the simulation process. The animation shown at the top edge of the window informs you, that the application is currently calculating a new solution. Further messages issued by the computational part of the application shall be also shown in this window.

If there are simulation results available from an earlier calculation, they will be compared to the project data just saved. If no changes of the input are detected the calculation step will be skipped..

Soon after the calculation is finished the matrix of thermal coupling coefficients and precision information for that calculation are shown. The report window displays characteristic values of the construction in the form of the matrix of thermal coupling coefficients (L2D or L3D).

The precision results shall be checked and evaluated against conformance to standardised criteria (the relative close-up error < 10-4). If this criteria is not satisfied the computation shall be repeated with different parameters (of a fine grid or the solver).

Thermal coupling coefficients shown might be immediately used to assess thermal energy performance of the construction just calculated (e.g. to determine the Ψ (psi) or Χ (chi) values for energy rating evaluation, energy pass or energy demand calculation).

The Boundary Conditions window lists all spaces for which temperatures (the boundary conditions) can be entered. Temperatures of spaces will be pre-assigned automatically:
  • first space listed receives air temperature of  -10°C
  • all other spaces are pre-assigned the temperature of +20°C.

Spaces are shown sorted alphabetically by their names. By using some consistent naming conventions the pre-assignment might match your requirements in most cases:

  • Exterior is listed before Interior
  • Space 00 prior to Space 03 and prior to Space 10
  • Room 11 is listed prior to  Room 1.

If the model contains power sources (heat sources) also, they are listed in the window to allow the entry of their power density [W/m³].

To confirm the values of temperatures entered in the Boundary Conditions window press the button Apply Boundary conditions entered are applied onto basic solutions (the g-values).
The resulting temperature distribution within the construction is calculated as a superposition of basic solutions multiplied by the corresponding boundary condition value.
Actual results are calculated and displayed within several evaluation windows. Results are formatted as printable textual reports which can be also saved as Adobe PDF, MS-Word or MS-Excel files for further processing.

The temperature distribution is available as starting point for various graphical evaluations.

The Coupling Coefficients and Precision report and the Results report are shown as standard reports automatically. Via the menu View→Evaluation & Reports you shall request further available reports.

continue ...

 Model, Calculate, Simulate and Analyse Thermal Heat Bridges in 2D and 3D with AnTherm®  

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 Copyright © Kornicki Dienstleistungen in EDV & IT

2014-03-04 10:19 +0100