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Tutorials and Model Library

Generic Missle Body - Parametric Studies

Generic Missle Body - Parametric Studies
This tutorial demonstrates the creation of geometry based on parameters. These parameters can be used to conduct parametric studies without manually creating the mesh for each modification in the geometry. A generic missile body is used as an example. read more
CFD

Unstructured Grid with 'Near Wall' Problems

Unstructured Grid with 'Near Wall' Problems
The near wall gridding is improved and modified through the use of sources and is demonstrated in this tutorial. read more
CFD

Grid Generation for Compliant Orifice FSI Problem

Grid Generation for Compliant Orifice FSI Problem
In this tutorial, a grid system is generated to study the flow of engine oil through a compliant orifice. Effects of thermal stress and fluid-structural coupling will be included. The geometry is 2D-axisymmetric, hybrid structured/unstructured grid system. Structured... read more
CFD

2D Axisymmetric Rocket Nozzle

2D Axisymmetric Rocket Nozzle
This tutorial addresses grid quality issues through the example of an axisymmetric rocket nozzle. read more
CFD

Pipe Junctions - Geometry Creation and Meshing

Pipe Junctions - Geometry Creation and Meshing
This is a step-by-step guided introductory tutorial for 3-D geometry creation and structured mesh generation in CFD-GEOM. The geometry for this tutorial is a simple T-pipe junction. read more
CFD

Circles and Pipes

Circles and Pipes
This is a step-by-step guided introductory tutorial for 3-D geometry creation and structured grid generation in CFD-GEOM. read more
CFD

User Defined Time Step for a Warm-up Simulation (UDT)

User Defined Time Step for a Warm-up Simulation (UDT)
A solution of steady state temperature in simple, 2D, rectangular solid demonstrates the use of a variable time step size. The left and right walls are isothermal (300° C and 500° C, respectively), while the top and bottom walls are adiabatic (symmetry and wall... read more
CFD

User Defined Source Term for a Heat Source (USOURCE)

User Defined Source Term for a Heat Source (USOURCE)
An enthalpy source term is used to simulate the transient heating of a room and implemented through the user subroutine USOURCE. A small region in the lower left hand corner of the "room" mimicks a heater. An inlet, directly above the heater, simulates a fan... read more
CFD

User Defined Reaction Rate Factor for a Surface Reaction (UREACTION_RATE_FACTOR)

User Defined Reaction Rate Factor for a Surface Reaction (UREACTION_RATE_FACTOR)
Many reaction mechanisms found in literature have generalized rate expressions. In this example, one such generalized reaction rate expression called the Langmuir - Hinshelwood formulation is implemented using the UREACTION_RATE_FACTOR user subroutine. User... read more
CFD

User Defined Viscosity for Non-Newtonian Fluid (UVISC)

User Defined Viscosity for Non-Newtonian Fluid (UVISC)
A simple, 2D serpentine duct is used to demonstrate the effects of setting laminar viscosity equal to a function of the x-direction velocity gradient. The viscosity increases with the gradient and thus is a "shear-thickening" fluid. This example uses UOUT to obtain... read more
CFD

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