CRUNCH CFD Version 3.5.0 Released

CRAFT Tech has officially released new versions of three software packages:

CRUNCH CFD v3.5.0
CRUNCH GUI v3.5.0 R1
Chemistry Table Generator v1.1.0 (the upgraded framework replacing the former Flamelet Table Generator)

Please go to the Fileshare Download page to access the latest versions. A list of upgrades is given below:

MAJOR CHANGES

Added restart_pscale variable to scale existing pressure flowfield by a factor during startup
Added Y / Z / Arbitrary axis aligned cylindrical PROPZONES
Added utils/nist_sat_safety_fac to calculate minimum required TABLE_SAT_SAFETY_FAC
Added heat release rate (HRR) as an output variable in COMP module. Note: This variable is automatically activated only if the Cantera Chemistry Manager is being used (ISYS = 100) AND one of the following conditions holds:
- Condition 1: IMODEL = 4 with detailed finite rate chemistry
- Condition 2: iFlameletOption > 0 with FGM or Flamelet model (flamelet_model = .T.)
Upgraded Parallel PRECRUNCH:
- Upgraded ParMETIS from 32 bit to 64 bit
- Upgraded processor pair communication search to remove problematic infinite loops and improve speed by replacing nested scans with an adjaceny list approach
- Implemented logic to compute closest wall BC tag for each cell to allow for local surface roughness in CRUNCH
Added Thickened Flame Model as an additional model for detailed finite rate chemistry
- Added ITURBMODEL_TFM allows user to select which turbulent flame speed model to be used with Thickened Flame Model
- Added ICELLVOLMETHOD allows user to select how the characteristic length of a cell is chosen when calculating cell volume for use with the Thickened Flame Model

MINOR CHANGES

Updated COMP/INCOMP code to automatically set BC Tag 999 to slip wall (wall_bc_type) if it exists in grid file (from automatic PRECRUNCH viscous wall retagging if non-hex/prism element is found) but not in input file
Compute radial pressure gradient at outflow if itransform=1 (not just irotation=1) – this allows for swirling flows in stationary frames
Added wpscaling variable which allows the scaling of chemistry reaction rates – only applicable when running with FGM
Added PRECRUNCH support for SolidMesh unformatted (binary) UGRID mesh file format
Added support for mean speed of sound as QBAR variable 119 in COMP
Added TFM tutorial
Changed output file to dimensional values

BUG FIXES

Fixed bug in force and moment postprocessing calculation for wall function simulations related to shear stress calculation
Removed whitespace from COMP plot variable names 509-514 which caused issues with some plotting formats
Fixed bug not allowing users to manually specify LSTPLVARS > 500