VIPER 4.5 Code

VIPER (Viscous Interaction Performance Evaluation Routine) was originally developed to help assess boundary layer interactions for high area ratio nozzles. Since the release of Version 3.6, there have been many improvements and corrections made to the that version.

Given below is a brief summary of upgrades and enhancements contained in Version 4.5

New in VIPER 4

A new Subsonic Transonic Navier-Stokes Solver

  • Includes full mixing of striations in LRE’s.
  • Includes two phase flow with finite rate chemistry.

Features of VIPER 4.5

Two-Phase flow.

The two-phase transonic module TRAN2P was incorporated into the VIPER code.

A slip wall boundary condition.

STS (Full Two_phase Flow Navier-Stokes Solver) option for the transonic with film cooling

Damping control at the symmetry centerline allows for a wider range of problems to be solved.

A source flow option is available.

Standard LINPAC matrix routines are incorporated into the basic matrix solvers so that users can take advantage of machine optimized versions of these routines.

In order to view the results of the calculations effectively Viper 4.5 writes output files for TecPlot and ParaView graphics packages.

An interface which transfers nozzle exit plane flow properties from VIPER to SPF-3, the Standard Plume Flowfield computer program is available.

The PNS wall boundary conditions allow a steady state temperature be calculated for a radiation cooled nozzle.

Film Cooling in the PNS module

Post-processing with Tecplot program

Auxiliary calculations and output have been added so that total flow properties for a Pitot tube probe are available. The method assumes frozen flow through a normal shock, followed by stagnation.

Near plume flowfield option to allows the computation to proceed past the nozzle exitplane for one or two nozzle exit radii.

Available on Windows and Linux platforms.