Transcript Folie 1 - PHOENICS

Hans-W. Mindt und Wolfgang Ottow GbR
Ingenieurbüro für angewandte Strömungsmechanik
Kruppstr. 82 – 100, 45145 Essen, Germany
[email protected]
www.a-CFD.de
Ingenieurbüro für angewandte
Strömungsmechanik
From GIS to CFD
- a CAD solution for data transfer between GIS and CFD-
Hans-Wilfried Mindt
(Dipl.-Ing.)
Contents
•
•
•
•
Ingenieurbüro für angewandte
Strömungsmechanik
Problem determination
Point‘s of interrests
Fileformates used by GIS
Model topology
– By splines (Points interpolated)
– By points (Points exactly by using triangles)
• Solution
• Summary
• Discussion
Problem determination
•CFD solution in
Environment
•Exhaust emission
•Condensation
•Fresh-air supply for turbines
and generators
•Catastrophe scenarios
Ingenieurbüro für angewandte
Strömungsmechanik
Problem determination
•CFD solution in
Environment
•Power supply station
•Residential district
•Fresh-air supply for
turbines and
generators
•Catastrophe
scenarios
Ingenieurbüro für angewandte
Strömungsmechanik
Problem determination
•CFD solution in Environment
Ingenieurbüro für angewandte
Strömungsmechanik
Ingenieurbüro für angewandte
Strömungsmechanik
Ingenieurbüro für angewandte
Strömungsmechanik
Model topology
•Object based
on CAD
Points
Lines (splines) Surfaces (bicubic)
Model topology
•Object based on CAD
STL-Data file (output)
facett
Model topologic
Data-Set from GIS or
related programs
•Points created optophotografically
•Triangulars transfered into
IGES Format
•IGES-Format transfered
via CAD-System into STLformat
•STL-File readeble by
PHOENICS
•Approximatly 1 day
working time
Model topologic
Data-Set from GIS
or related programs
•Rounded shape
•Cliffs possible
•Facetts
Model topology
Data-Set from GIS
or related programs
•Curved surface
as approximation
of mountains, but
cliffs and sharp
rocks are possible
to build.
Model topology
Data-Set used
in Rapidprototyping
branch
•Catalytic Reactor Bed
Solution
Objects from
Library
Object form
CAD-System
Pressure distribution on the surface
Solution
•Streamlines
•Pressure
distribution on
surface
Summary
•A simple and easy to use data transfer between GIS and CFD
is useful.
•The STL-Format is not established like in the rapid-prototype
branch
•All data-sets are sorted in 2 ½ D
•We prefere
•Triangulation by third party product
•Transfer via iges into CAD-system
•Cutting and adding of parts inside of CAD-System
•Transfer of final geometric landscape (buildings can be included) via
STL-File into CFD-System
Discussion