RVCQ3D
v. 303
Overview
RVCQ3D (Rotor Viscous Code Quasi-3-D) is a computer code for analyzing
inviscid and viscous blade-to-blade flows in turbomachinery. It includes
the quasi-3-D effects of rotation, radius change, and variable stream surface
thickness. Simple flat plate and duct geometries can also be analyzed.
Applications
- Axial compressors and turbines
- Centrifugal impellers and radial diffusers (no splitters)
- Pumps
- Linear cascades
- Flat plates and rectangular ducts
- Fast parametric studies of blade shape, incidence angle, etc.
- CFD and turbomachinery education
Formulation and differencing schemes
RVCQ3D solves the Euler or Navier-Stokes equations written on a surface
of revolution. The equations are written in an (m,theta)coordinate system,
where m is the arc length along the surface and theta is the circumferential
direction. The stream surface radius and thickness are assumed to be known
functions of m, and are usually obtained from an axisymmetric throughflow
analysis.
- Central difference + artificial viscosity
- Central difference + H-CUSP upwind (v. 400 Beta only)
- AUSM+ upwind scheme (v. 400 Beta only)
Turbulence models
- Baldwin-Lomax (algebraic)
- Cebeci-Smith (algebraic)
- Wilcox's k-omega (two-equation)
- Wilcox's k-omega + Menter SST (v. 400 Beta only)
All turbulence models include transition and roughness effects.
Numerical method
- Explicit multi-stage Runge-Kutta scheme
- Variable time-step and implicit residual smoothing for convergence
acceleration
- Preconditioning for low-speed (incompressible) flows
Input and output
- Grids are usually generated using GRAPE
- Grid and solution files are in PLOT3D format
- Namelist input
- Printed output of convergence history, blade surface properties, and
average flow properties at the inlet and exit
Computer and graphics requirements
RVCQ3D requires a Fortran 90 compiler and CFD visualization software for
use. Click the button below for more information.
Examples
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