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 perpetual licences or with subscription licences.
  • Subscription licences are protected with a software licence locked to a computer (stand-alone, network or cloud-based floating). With a subscription licence you get access to the latest version of SOLIDO, technical support and Physibel Knowledge Base.
  • Perpetual licences are protected with a stand-alone licence locked to a hardware key. With a perpetual licence you get 1-year AMP (Annual Maintenance Plan). Renewal of AMP is not mandatory but continues your access to major version updates of SOLIDO, technical support and Physibel Knowledge Base.  

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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