RVCQ3D
v. 406
Overview
RVCQ3D (Rotor Viscous Code Quasi3D) is a computer code for analyzing
inviscid and viscous bladetoblade flows in turbomachinery. It includes
the quasi3D 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 NavierStokes 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 + HCUSP upwind
 AUSM+ upwind scheme
Turbulence models
 BaldwinLomax (algebraic)
 CebeciSmith (algebraic)
 Wilcox's 2006 komega (twoequation) with cross diffusion term and stress limiter
All turbulence models include transition and roughness effects.
Numerical method
 Explicit multistage RungeKutta scheme
 Variable timestep and implicit residual smoothing for convergence
acceleration
 Preconditioning for lowspeed (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.
Test cases included with RVCQ3D 406
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Mach contours, NASA rotor 37,
70 percent span 
Mach contours, NASA 6:1
centrifugal impeller 
Mach contours, Goldman annular
turbine vane 
Flat plate skin friction
for testing turbulence models

Other cases modeled with RVCQ3D 
Mach contours, supersonic flow through a slotted plate 
Density gradient contours showing shocks
on a cascade of fan blades 
