Isentropic Module

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 extend the isentropicInflow boundary condition to allow the user to specify a stagnation enthalpy instead of a stagnation temperature. It also supports the equilibriumtag which will calculate the equilibrium species mass fractions at the prescribed stagnation conditions.

Dependencies

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. This module also requires a compiler with C++11 support.

Installation Instructions

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

First the module must be loaded at the top of the vars file. Any isentropicInflow boundaries conditions may be tagged with the h0 and/or equilibrium tags.

loadModule: isentropic

boundary_conditions: <BC_1=isentropicInflow(p0=53e6 Pa, h0=9.1e6 J/kg, 
                                            mixture=[N2=1.0, N=0.0], 
                                            equilibrium), ...>