The developed code is a multi-block finite volume solver for non-orthogonal hexahedral structured grids, written in `C' programming language. It reads grids in CGNS format and solves the Navier-Stokes, continuity, energy and species transport equations and writes the results in CGNS files to be read and displayed by any post-processing software.
The program uses dynamic memory allocation. User choices for grid, equations, variables, boundary conditions, type of algorithm, etc., are made during run time with the compiled code. At present the grids are generated by commercial grid-generation software, but any grid-generator that creates grids in the CGNS format may be used. The results, too, can be viewed on any sophisticated commercial post-processing software.
The present capabilities of the solver are:
- A basic multi-block Finite-volume solver for non-orthogonal hexahedral grids, that can read grids and write solutions in CGNS format.
- Solves incompressible Navier Stokes, Continuity, Temperature and Species transport equations.
- Solves 2-D, 2-D Axisymmetric and 3-D non-orthogonal structured grid problems.
- Time Stepping Schemes: the first-order Implicit and the second-order Crank Nicolson schemes can both be used.
Convection Scheme (spatial) discretization:
- First order Upwind scheme.
- Central Difference scheme.
- QUICK scheme.
Solution strategy for solving Governing Equations:
- Segregated approach. (separate and sequential solutions of momentum and scalars).
- Coupled approach (simultaneous solutions of momentum and scalars).
Boundary Conditions:
- Dirichlett, Neumann Boundary Conditions.
- Mixed (Robin) and Convective Outflow Boundary Conditions.
- Spatially and temporally varying boundary conditions.
Physical Properties:
- Both constant and variable physical properties, with provision for physical properties to be user defined.
- Provision for user-defined functions for boundary conditions/source terms.
- The present version of the code also has a Graphical User Interface (GUI, AnuViewer) for easy use.
