Fluid Dynamics
CYCLONE
Dolfyn INput guide
vs 0.4xx DRAFT
Cyclone Fluid Dynamics BV
Author:
H.W. Krüs
CFD-071001
Cyclone Fluid Dynamics B.V.
23rd October 2007
Copyright
c
Cyclone Fluid Dynamics B.V., 2007. All rights reserved.
Cyclone Fluid Dynamics B.V.
Sweelincklaan 4 Tel.: +31-40-22 30 491 Web: www.cyclone.nl
NL–5583 XM Waalre Fax.: +31-40-22 30 490 email: info@cyclone.nl
Dolfyn INput guide
Fluid Dynamics
CYCLONE
Contents
1 Introduction 4
1.1 Syntax 4
2 General commands 5
2.1 Title 5
2.2 Steps 5
2.3 Thermal model 5
2.4 Turbulence model 5
2.5 Time dependency 6
2.6 Restart 6
2.7 Comments 6
2.8 Save 6
2.9 Output 7
2.10 Use 7
2.10.1 Patches or particles 7
2.10.2 Gauss 7
2.10.3 Lapack 8
2.10.4 Fix ABL 8
2.11 Debug 8
2.12 Math 8
3 Control parameters 10
3.1 Monitor 10
3.2 Blending factors 10
3.3 Alternative differencing schemes 10
3.4 Relaxation factors 11
3.5 Relative solver accuracy 11
3.6 Switches 11
3.7 Relative solver accuracy 12
3.8 Initialisation 12
3.9 Pressure iteration 12
3.10 Equations 13
4 Fluid properties 14
4.1 Density 14
4.2 Reference pressure 14
4.3 Gravity 14
4.4 Expansion coefficient 14
4.5 Laminar viscosity 15
4.6 Specific heat capacity 15
4.7 Prandtl number 15
4.8 Heat conduction 15
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Dolfyn INput guide
Fluid Dynamics
CYCLONE
4.9 Particles 16
5 Postprocessing 17
5.1 OpenDX 17
5.2 VTK 17
5.3 GMV 17
5.4 Tecplot 17
5.5 Extra options 18
5.6 Special OpenDX options 18
6 Boundary conditions 19
6.1 Inlet 19
6.2 Outlet 20
6.3 Wall 20
6.4 Symmetry plane 20
7 Example Dolfyn INput file 21
Index 22
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Dolfyn INput guide
Fluid Dynamics
CYCLONE
1 Introduction
Commands can be grouped into some categories:
1. General commands
2. Control parameters
3. Fluid properties
4. Postprocessing
5. Boundary conditions
1.1 Syntax
The command line syntax is:
Call: command, value [, option 1 | option 2]
Default(s): default(s)
Example: command, command example
Arguments are separatated by one comma or one or more blank spaces (multiple
blank spaces count as one, and one comma and one or more spaces count as one
comma).
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