This module was developed by ATA Engineering as an add-on to the Loci/CHEM computational fluid dynamics (CFD) solver. The module can be used to output wall data to files during a Loci/CHEM simulation. The user inputs the desired location of the wall probes, and the data output comes from the closest face center on the nearest viscous boundary (e.g. viscousWall or wallLaw). The data output includes wall quantities of interest such as pressure, temperature, heat flux, shear stress, and y+. The data from each wall probe will be output to a separate file with its same name.

This module depends on both Loci and CHEM being installed. Loci is an open source framework developed at Mississippi State University (MSU) by Dr. Ed Luke. The framework provides a rule-based programming model and can take advantage of massively parallel high performance computing systems. CHEM is a full featured open source CFD code with finite-rate chemistry built on the Loci framework. CHEM is export controlled under the International Traffic In Arms Regulations (ITAR). Both Loci and CHEM can be obtained from the SimSys Software Forum hosted by MSU.

First Loci and CHEM should be installed. The LOCI_BASE environment variable should be set to point to the Loci installation directory. The CHEM_BASE environment variable should be set to point to the CHEM installation directory. The installation process follows the standard make, make install procedure.

make
make install

Usage follows the standard probe functionality in Loci/CHEM. First the module must be loaded at the top of the vars file. The user can then define the location of the probes and their frequency with the wall_probe and wall_probe_freq variables.

loadModule: wallProbe

wall_probe_freq: 5
wall_probe: <wprobe1=[0,0,0], wprobe2=[1,0,0]>