Physica3g

PHYSICA-3.11 at Greenwich

Physica3g is a version of PHYSICA with useful added features. Physica3g includes the current release version (3.11) of the 'standard' PHYSICA and the following Added Features:

• Extended mesh building tool:   The mesh is built out of blocks (parts); each block can have either simple (e.g. brick, wedge, branch) or complex shape (possibly involving more than one material). Individual blocks may be constructed with different tools, including the traditionally used Femgv. The blocks are joined at matching faces with the option of first rotating them and moving them into place. The matching cell faces are specified by the user in the corresponding block definitions at obvious interfaces of the geometry (e.g. machine parts coming together, certain narrow links, etc.)
  
  
• Automated result plotting tool 'phyview' with high-quality PostScript output:   Various cross-sections or 'patches' can be displayed. Mesh lines, vectors (e.g. velocity) and scalar variable contours can be combined in the same plot. Grey-scale output is supported where colour is not required (black-and-white printers, manuscripts, etc.) Any Physica variable can be plotted, not just those included in the post-processing list. Simulations involving tilting or rotation with gravity switched on usually keep the geometry unchanged and only modify the gravity vector with time. In such cases 'phyview' will align the drawing with the current gravity vector and rotate the mesh as one would expect to see it displayed.
  
  
• near-wall LVEL turbulence model:   This is an implementation of the original computationally very efficient algorithm developed at CHAM which allows smooth transition between laminar and turbulent flows near solid walls of complex shapes. In addition, the advancing solidification front is taken into account when calculating the distance to the nearest wall.
  
  
• Permeable wall boundaries for modelling porous materials, gravity vector rotation according to prescribed tilting plan, radiative heat transfer across gaps, empirical heat transfer boundary conditions, patch area and material volume monitoring - useful additional tools implemented within the Physica User Module.
  
  
• Problem specification help
  • Computational Fluid Dynamics
  • Structural Mechanics
  
  
• Detailed List of Modifications

Instructions for preparing the Physica executable and running it with or without the mesh builder can be found in the ReadMe.txt file included in the distribution. A key-file for running the program and the developers' source code can be obtained from G.Djambazov.

MSc and PhD students at CMS can download Physica3g.zip from Teachmat.