Efficient method to calculate 3D steady state heat transfer in objects of any shape

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SOLIDO Features


  • Steady-state thermal simulation of all shapes in 3D
  • Compatible with STL files
  • Minimal simulation time due to powerful finite element solver
  • Superior graphic representation of isotherms and isofluxes
  • Software operational in English, French, German and Dutch
SOLIDO Application fields

Application fields

  • Thermal bridge analysis: heat loss calculation, surface condensation (ISO/FDIS 10211)
  • Thermal transmittances of building components and elements (EN ISO 6946)
  • Thermal performance of windows, doors and shutters (EN ISO 10077-2)
  • Heat transfer via the ground (ISO 13370)
  • Heat transfer in masonry and masonry products (EN ISO 1745)


SOLIDO Input and geometric modelling

Input and geometric modelling

  • Object modelled with blocks
  • Free independent positions of the eight vertices of a block, allowing shapes as prism, pyramid, parallelepiped, etc.
  • Corners around vertices can be rounded to form solids with quadratic surfaces: sphere, cylinder, cone, etc.
  • SOLIDO blocks can also refer to STL files as exported from CAD systems (e.g. AutoCAD)
  • The point coordinates of a STL file can be transformed in SOLIDO to adjust its position
SOLIDO Thermal properties and boundary conditions

Thermal properties and boundary conditions

  • Thermal properties linked to colours of blocks
  • Material properties with extensive material database
  • Boundary conditions at material surfaces, material interfaces, inside materials (volumetric heat source)
  • Improved simulation of separated radiation (using view factors) and convection (function of difference between local surface temperature and air temperature) by use of RADCON module
  • Automatic calculation of thermal properties for air cavities in accordance with international standards
SOLIDO Mesh generation

Mesh generation

  • SOLIDO uses a rectangular mesh with node fitting to the true object geometry
  • The user defines a 3D rectangular grid (comparable to grid in TRISCO). The grid can be equidistant based on a given resolution and then be optimised to minimise the number of nodes

  • The object is rasterised in relation to the calculation grid to obtain a rectangular approximation
  • The node coordinates at the outside surfaces or in the interfaces between different colour regions are fitted unto the original object surfaces, to achieve a close match to the original geometry



  • Superior graphic representation of isotherms and isofluxes
  • Text output of temperatures and heat flows
  • Investigation of surface condensation
  • Calculation of thermal transmittances and thermal bridge properties


SOLIDO Compatibility with other Physibel tools

Compatibility with other Physibel tools

  • SOLIDO can read TRISCO data
  • SOLIDO can read BISCO data (creates STL files per colour for extruded profile, based on triangulation mesh)


SOLIDO Licence options

Licence options

  • SOLIDO is available with subscription licences (stand-alone or floating)
  • A subscription licence gives you access to the latest version of SOLIDO, technical support and Physibel Knowledge Base.
  • More information on the difference licence options can be found here

what's new in version 5?

  • Improved STL file handling (import multiple at the same time, assign colour automatically, no need to save after every transformation).
  • Drag Blocks (with mouse in Image window).
  • Revised Colour window to allow conformity with different EN standards. Implementation of the equivalent thermal conductivities for air voids and layers according to EN ISO 6946.
  • Click here for presentation with a complete overview of all new developments.
Version history


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