VNAP2: a computer program for computation of two-dimensional, time-dependent, compressible, turbulent flow
VNAP2 is a computer program for calculating turbulent (as well as laminar and inviscid), steady, and unsteady flow. VNAP2 solves the two-dimensional, time-dependent, compressible Navier-Stokes equations. The turbulence is modeled with either an algebraic mixing-length model, a one-equation model, or the Jones-Launder two-equation model. The geometry may be a single- or a dual-flowing stream. The interior grid points are computed using the unsplit MacCormack scheme. Two options to speed up the calculations for high Reynolds number flows are included. The boundary grid points are computed using a reference-plane-characteristic scheme with the viscous terms treated as source functions. An explicit artificial viscosity is included for shock computations. The fluid is assumed to be a perfect gas. The flow boundaries may be arbitrary curved solid walls, inflow/outflow boundaries, or free-jet envelopes. Typical problems that can be solved concern nozzles, inlets, jet-powered afterbodies, airfoils, and free-jet expansions. The accuracy and efficiency of the program are shown by calculations of several inviscid and turbulent flows. The program and its use are described completely, and six sample cases and a code listing are included.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5507314
- Report Number(s):
- LA-8872; ON: DE82007360
- Country of Publication:
- United States
- Language:
- English
Similar Records
Supersonic, turbulent flow computation and drag optimization for axisymmetric afterbodies
Computation of high Reynolds number internal/external flows. [VNAP2 computer code]
Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
CALCULATION METHODS
COMPUTER CODES
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
GAS FLOW
LAMINAR FLOW
MATHEMATICAL MODELS
NAVIER-STOKES EQUATIONS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
REYNOLDS NUMBER
STEADY FLOW
TIME DEPENDENCE
TURBULENT FLOW
UNSTEADY FLOW
V CODES