BISTRA 5.0

BISTRA by Physibel is a two-dimensional transient heat-transfer simulation tool for building components and details. It helps engineers and building scientists analyze dynamic thermal behavior—such as the effects of thermal mass, intermittent heating, and changing indoor/outdoor conditions—at junctions and assemblies where thermal bridges can occur. With detailed material modeling and flexible boundary conditions, BISTRA calculates time-dependent temperature fields and heat fluxes, supports evaluation of surface temperatures, and assists in assessing risks like surface condensation and mold. The software provides clear visual and numerical outputs (including isotherms, heat-flow vectors, and key indicators such as linear thermal transmittance and surface temperature factors) to support design optimization, compliance checks, and performance verification. BISTRA integrates smoothly within Physibel’s suite, making it a practical choice for consultants, façade and envelope specialists, researchers, and energy modelers who need accurate, physics-based insight into the transient behavior of building details.

BISTRA is developed by Physibel. The most popular versions of this product among our users are: 1.0, 2.0, 3.1, 4.2 and 5.0. The names of program executable files are Bistra.exe, BISTRA4.exe.

You can check Unit Conversions, RuTast, Video Edit Converter and other related programs like SalvageRecovery for Windows at the "download" section.