
Modeling with blocks
 Same as in TRISCO
 Additional input of material densities, specific heat values,
solar reflection factors, solar transmission factors
 Thermal conductivities and specific heat values may be temperature dependent (e.g. useful in fire simulations)
 Solar reflection factor may be function of angle of
incidence

Dynamic boundary conditions
 Boundary conditions are time dependent functions: constant, steps,
periodic, climate values, fire curve, ...
 Solar zone with 3D solar processor (any
geographical location, based on climate files with global and diffuse
solar radiation)
 Ventilation flow functions
 Improved simulation of radiation and convection by use of
RADCON module

Solution
 Dynamic calculation parameters: time step interval; startup
calculation duration to get dynamic start values; calculation duration
 Temperature calculation at time step intervals using CranckNicolson
finite difference method
 Iterative solution of ventilation powers
 Absorbed solar radiation is converted to additional
node powers
 Solution of internal diffuse solar reflections and
solar transmissions using radiosity method

Output
 Graphic animations (AVI files) of 3D views or 2D cross sections of
time varying shadows, absorbed solar radiation, temperatures, heat fluxes
 Snapshots at any time step
 Tables and graphs of time varying solar fluxes, temperatures in given nodes, heat
flows through given faces

Applications
 Transient analysis of thermal bridges
 Dynamic thermal analysis of floor heating
 Analysis of building elements exposed to fire (Eurocodes)
 Ground heat losses (EN ISO 13370)
 Heat exchange problems (mass flows)
 Advanced façade engineering
 Passive solar building design (sunrooms, Trombe
walls)

Compatibility
 SECTRA is 2D variant of VOLTRA
 VOLTRA can read TRISCO data
 Same function definitions as in CAPSOL

Demo program
 Download Physibel demo programs and manuals (14 Mb)

Upgrade info 