TRISCO upgrade info

Version 11.0w

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• Easier object modelling: selection of one or more blocks, which can be copied, moved, transformed (translation, rotation over right angle, scaling) or merged (block addition).  The new way of transformation definitions replace and expand the possibilities offered from version 9.0w.

• Insert blocks and thermal properties of other TRISCO data file into current TRISCO data file.

• The grid is automatically reduced to a “minimum grid” after each block operation that involves the grid.

• Import bitmap file (256-colours BMP file).

• New view option in Blocks window: list selection of blocks having all a given colour.

• Simplification of grid functions (split, merge, create minimum grid).

• Selection of one or more grid meshes to perform grid functions (split, merge).

• Better feedback (by colour shading) in Image window of current mesh in Grid window (or Minimum Grid window) and current coordinate in Coordinates window.

• New definition of “zoom in” function: a mouse click is required to define the centre of the zoomed view.

• New type of boundary condition: material with known temperature or known heat power density.

• New type of boundary condition in RADCON module: transparent material (with conductive and radiative heat transfer), useful for gas cavities of irregular shape (instead of materials of type EQUIMAT).

• New view option in Colours window: list defined colours (useful after loading thermal properties template).

• Clip colours: object parts having the same colour can be clipped away in the Image window (through a visibility toggle per colour).

• Convergence of iteration cycles: new calculation parameter to minimize the number of required iteration cycles (to deal with non-linear properties): maximum temperature difference between iteration cycles.

• New menu item: calculation of view factors (independent from system solution).

• Calculation of radiative heat transfer using view factors calculated in a coarser grid, reducing memory requirement and calculation time.

• Output of cumulated view factors between surfaces of different colours (through integration of elementary view factors).

• A zone of type BC_NOSKY (using RADCON) no longer implies a balance radiation node to represent the open sky as a radiation mirror.

• Graphic representation of heat flow densities also in material cutoff planes (through clipping), to visualize heat fluxes inside materials.

• Program switch for opposite operation of rotate and pan in Image window: move object versus move viewpoint.

• Automatic adjustment of memory space for input data.  In former TRISCO versions the input capacity was a program setting.

• New manual (with tutorial on object modelling; chapter on RADCON module; index).

Version 10.0w

• Two new types of boundary conditions have been introduced:
  1.  Enclosures with unknown temperature and global surface heat transfer coefficient
       (type BC_FRE_S).
  2.  Border faces between colours having a fixed temperature or heat flux (“borderface BCs”).

• A Coordinates window is added to view absolute coordinates of grid line positions.
  Another split mesh function is added in the Grid window (Grid > Split Mesh max… and Grid > Split All max…).

• An Areas window is added to get dimensions of surfaces and to be used in thermal transmittance calculations (see further: derived thermal quantities).

• A U values window is added to get thermal transmittances of 1D building elements (e.g. walls and roofs), and to be used in derived thermal transmittances (see next point).

• Thermal quantities in line with European standards can be reported in the Text Output window: temperature factor (EN ISO 10211-2), linear thermal transmittance (EN ISO 10211-2, valid for 2D constructions), 2D/3D surplus thermal transmittance (correction term for the sum of linear and point influences of a thermal bridge valid for 3D constructions, in correspondence with EN ISO 10211-2).

• Improved graphical feedback in the Image window of a selected item in another edit window.
  The selection feedback in the Image window can be toggled on or off.

• Undo/redo facility while editing.

• Show temperature at mouse cursor position in the Image window when the temperature field is loaded.

Version 9.0w

• Treatment of two-dimensional problems.
  A problem is considered to be two-dimensional (as in KOBRU86), as long as at least one dimension of the input geometry consists of 1 grid cell.
  If the Z direction consists of 1 grid cell, the relevant 2D section is XY;
  else if the Y direction consists of 1 grid cell, the relevant 2D section is XZ;
  else if the X direction consists of 1 grid cell, the relevant 2D section is YZ.
  When calculating view factors, the third dimension is considered to be infinite.
  In a 2D problem heat flows (in W) within the materials of the relevant 2D section can be visualized, instead of isofluxes (in W/m²) on the material outer surfaces of 3D geometries.

• TRISCO can be compiled to accept only 2D problems: this is the KOBRU86 version.
  In this version 3D data cannot be read, and the (single) grid cell in the third dimension cannot be subdivided.  Still it is possible to do coordinate transformations (see next item).

• Some global coordinate transformations on all blocks can be done: all coordinates of two directions can be switched (X-Y, Y-Z or Z-X), or the direction of one coordinate axis can be mirrored (X, Y or Z).

• Equivalent thermal conductivities of cavities and convective heat transfer coefficients in air cavities can be calculated with formulae consistent with the standards EN ISO 6946 and prEN ISO 10077-2.

• Built-in converter to import data from BISCO version 5w.

• The grid functions are extended:
  A grid mesh can be split in a series of meshes with a constant ratio between each mesh width and the one before (as 1, 3, 9, 27, 81).
  A Minimum Grid window is added which allows editing the minimum grid mesh widths with automatic scaling of the corresponding submesh widths in the Grid window.

Version 8.0w

• Developed for Windows 95 / 98 / Windows NT.

• Easy switching between program languages (English, Dutch, French, German).

• Extensive material patterns.

• A 3D preview of the geometry when selecting data files.

• A 3D image feedback clarifies the input:
  (1) the current material block, boundary condition block or mesh width is highlighted;
  (2) a perspective view is possible from every position around the object.

• A preview of material properties during the material selection.

• Zoom functions.

• The calculation is up to 50 times faster.

• The node capacity is higher than 10⁶.

• Graphs can be stored as bitmaps with a user defined resolution.

• Built-in batch procedure to execute several calculations without any intervention of the operator.

• Built-in converter to import data from previous TRISCO versions and from KOBRU86.