The PARC Code: Theory and Usage
Abstract
The PARC code is a flow-field simulation computer program based on the strong conservation law form of the Navier Stokes equations. Several variants of these equations are treated, including 2-D, axisymmetric, and 3-D versions and inviscid, laminar, and turbulence specializations. Use is made of perfect has equations of state and Sutherland's viscosity law. The equations are expressed in curvilinear coordinates while retaining strong conservation law forms. The Beam and Warming approximate factorization algorithm is used for forming the implicit central-difference algorithm. Pulliam's scalar pentadiagonal transformation is applied to produce an efficient steady-state solver. Artificial viscosity is added both implicity and explicitly and follows the switched fourth-order and second-order form of Jameson. The metrics are calculated in a finite volume manner so as to maintain free steam. Variable spatial and temporal time-steps are used for improved algorithm efficiency and robustness. Generalized boundary conditions are selected through code inputs and may be located anywhere within the computational grid. Use of the PARC code is straight-forward, requiring only a restart file and file of NAMELIST inputs. These inputs allow the selection of flow equation specialization, thermodynamic properties, grid size, artificial viscosity parameters, iteration controls, and output parameters are provided through NAMELIST input.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1987
- Accession Number
- ADB115169
Entities
People
- G. K. Cooper
Organizations
- Arnold Engineering Development Complex