Simtec brochure english_new

Simtec, a Leading Software for CFD Fire Simulation

 ADV AN CE D M O DEL S T O E NH AN CE  FAST CO M PUT ATIO N T O RED UC E
SIM ULA TIO N RELI ABI LI T Y SIM ULA TIO N TIM E

 PO W ERF UL P RE PRO C E SSO R TO  PO W ERF UL PO S TPRO C ESS O R TO BE ST
RED UC E M O DEL SET U P T IM E PRE SEN T TH E SIM ULA TI O N R ESU LT

 G R AP H I C AL U S E R IN T ER F AC E FO R  FAST AND FREE SUPPORT

CO N V E NI EN C E O F U S E

Information Technology Solutions

"I h av e work e d o n f ir e pro tec t i on des i g n i n my f ir e c o ns ul t i ng wor k . I
hav e do n e s o me s i mu l at i o ns us i ng F D S a n d a ls o h e lp e d w i th
s i mu l at i o ns us i n g C F X. My ex p er ie nc e is th a t t h e mo s t c o m mo n
pr o b l ems i n t he CFD mo d e ls ar e t h e t im e r eq u ir ed , g e om e try i m por t
an d a l i gn m en t o f gr id / mes h .

At pr es e nt I per f orm th e s i m u la t io n w it h S i mt ec i ns t e ad . I h av e
d is c ov er ed t h at g e om etry im p ort in Si m tec is inc r e d ib ly q u ic k an d
eas y , a n d th a t th e r es u lt is g oo d. W he n a rc h it ec t has no t pr o duc e d a
c om p l et e 3 D A u to CA D m od e l, it is e as y t o s e lf - dr aw t h e m o de l in t h e
fr e e pr o gr a m Sk e tc h u p a nd im p ort in to S im tec . T o a d jus t gr i d /m es h
of t he mo d e l do es n ’t r eq u ir e d irec t w ork . S i mt ec d oes it a ut o m at i c a lly
for t h e us e r .

W ith S i m tec , I h av e s i mu l at e d f ire an d s m ok e s pr ea d i n a d e pa rt m en t
s tor e c ov er i ng a bo u t 20 00 0 m2 w it h c om p l ic at ed a nd d et a i l ed
ge o me tr y . T h is w as p rev io us ly i mp os s i bl e wi t h o t her CF D s of tw are .
Th e s i m u la t io n inv o lv i ng a bo ut 4 m i l l i on c e lls , t o ok 3 6 h o urs o n a
c om p ut er w h ic h c os ts a b ou t 1 00 0 0 S we d is h k r o na . Pr ev i ous ly , I h a d
to ex c l u de p ar ts of t h e b u i ld i ng ge o me try .

It h as pr ov e d t o g iv e g oo d r es u lts at v a l i d at i ons . S i mt ec a ls o g i v es
v er y go o d s i mu l at i ons for t h erm a l r a di a ti o n i n a w ay th a t F D S an d
CF X ar e un a b le t o d e l i v er.

In s h or t, I w i l l he nc ef o rth us e Si m tec f or f ir e s i mu l at i o ns . "

- Jonas Lindsten
Fire engineer and civil engineer risk management
BrandskyddsDesign, Sweden


CFD (Computational Fluid Dynamics)
simulation, the base for design and
optimization
Importance of fluid dynamics, heat transfer cases, CFD simulation is the only possible
IMPORTANCE OF FLUID and combustion - Fluid dynamics, heat measure for such analysis.
DYNAMICS, HEAT transfer and combustion are of great
importance in daily life and industrial The power of CFD fire simulation - Fire is
TRANSFER AND
applications related to fire safety, energy, extremely complicated with fluid dynamics,
COMBUSTION environment protection, construction, heat transfer and combustion all involved.
chemical production, military and so on. In As for other applications, previously,
all these applications, fluid dynamics, in analysis of fires was either by small scale
many cases together with heat transfer and fire experiment in lab or by empirical
CFD SIMULATION AND combustion, is involved in the design and estimation. Consequently, fire safety
optimization of the system and the design was based on prescription code
ITS ADVANTAGES
products. In any application which may which is developed based on small scale
involve gas flow, and also possibly heat fire experiment data or empirical
transfer and combustion, the analysis of estimation. With the fast development of
fluid dynamics, heat transfer and computer hardware and the CFD
THE POW ER OF CFD combustion process very much helps simulation technology, comprehensive fire
F I R E S I M U L AT I O N innovate or optimize a system or a product simulation becomes possible and is
to best achieve desired function. recently more and more widely used in
both fire research and fire safety design
engineering. In fire safety design
S i m t e c , L E AD I N G F I R E CFD simulation and its advantages - In engineering, with proper CFD fire
modern society, as the system and product simulation, the fire performance can be
S I M U L AT I O N become more complex, the complexity of analyzed and optimized in a virtual
TECHNOLOGY fluid dynamics, heat transfer and environment. This enables a very efficient
combustion also drastically increases. Due and cost-effective analysis of individual fire
to the complexity, previously the analysis scenario and thus the fire safety design
of fluid dynamics, heat transfer and can be performance-based.
combustion can only be performed by
experiment or using empirical estimation.
However, experimental analysis has Simtec, leading fire simulation technology -
serious limitations. It can be very Simtec (Simulation of Thermal Engineering
expensive and time consuming, etc. In Complex) is a leading CFD fire simulation
many cases, experiment is not even software with state of art simulation
possible. Empirical estimation has very technology. After more than 20 years of
limited applicability and reliability. research and development, Simtec is now
publically released. Backed by reliable
technology that has been verified and
CFD computer software provides a tool to validated by both academic researchers
design and optimize a product and system and industrial customers, Simtec is a tool
in virtual environment by performing of choice for CFD fire simulation.
computer simulations, where the analysis
of fluid dynamics, heat transfer and
combustion is made by numerically solving Simtec deploys advanced models to
the extremely complex engineering maximize simulation reliability and the
equations. CFD simulation allows cost- novel numerical techniques to reduce
effective and efficient analysis. In many simulation time. The reliability provides you


Simtec – the CFD software of choice for
simulation of fires, ventilation and others

the confidence to expect that the simulated considered to be wrong by fire professor
Simtec TECHNOLOGY (to fire safety system will perform, as and experts, but was later fully supported
be continued on next designed, in the real world. The high by fire experiment.
simulation efficiency enables you to do
page)
more in less time with fewer resources. ’ your code (Simtec) without any doubt is
very advanced and powerful.’ – from a
 ADVANCED
Simtec customer
Among the Simtec technologies, some are
MODELS recently developed and held from
publication and thus not available in To reduce the simulation time without
anywhere else. compromising the simulation reliability,
 ADVANCED
Simtec deploys advanced numerical
NUMERICA L solution technology together with fully
SOLUTION
Simtec features and advanced technology: automatic parallel computing function. This
allows a fast simulation and brings
 advanced models to enhance significant simulation flexibility. Simtec
simulation reliability customers commented Simtec simulation
efficiency as
 GRAPHICAL
 fast computation to reduce
USER simulation time ‘that's is really impressive’
INTERFACE
 graphical user interface for ‘got really good information in just 20
convenience of use minutes computation. That is impressive!’
 POW ERFUL
 powerful preprocessor to reduce ‘It is amazing how fast Simtec is when
PRE-
model setup time running a scenario with this big geometry.
PROCESSOR Impressive!’
 powerful postprocessor to provide
desired methods to best present
the simulation result For convenience of use, Simtec also
provides its integrated GUI (Graphical User
Interface). From the GUI, you can easily
Simtec deploys advanced models to perform all the needed functions which
virtually simulate the processes in the real include pre-processing, computation,
world, thus enhance the simulation control of computation, simultaneous
reliability. The reliable technology has been visualization of computation and post-
very well verified and validated by both processing, etc. Simtec GUI also supports
academic researchers and industrial different languages which can be changed
customers. In a series of validation tests, anytime.
Simtec simulation very successfully
predicted the real fire process without
knowing the real fire measurement data in To start a simulation, a case setup must be
priori. In an academic research, Simtec created first. The setup normally includes
even predicted a very unusual fire general problem description, geometry
phenomenon. The prediction was specification, boundary condition



specification, initial condition specification For meshing, Simtec provides automatic
Simtec TECHNOLOGY and meshing. With Simtec pre-processor, mesh. Meanwhile, Simtec also provides
you can first easily create a new project pre-processor to let you modify any parts
and intuitively make change if necessary of mesh. Thanks to the deployed advanced
 POW ERFUL
for the general problem description. For fire numerical solution technology, Simtec has
PRE- simulation, normally the time-consuming essentially no limitation on mesh.
PROCESSOR
work is the geometry specification. Simtec
has a powerful geometry construction pre-
processor. More importantly, to drastically After simulation, you can use Simtec very
reduce the time of creating geometry powerful post-processor to generate chart
model, Simtec provides a very powerful 3D plot data and visualize your results using
 POW ERFUL
geometry import facility. You can create slice scalar plot, vector plot and 3D
POST- your geometry model using many Auto- rendering, etc.
PROCESSOR
CAD programs and then easily import it to
Simtec. In many cases, the 3D Auto-CAD
geometry may already exist. You will then Simtec applications – Simtec has very wide
Simtec APPLICATION just need to import it directly. If the CAD application areas. It can be used in fire
geometry does not exist, it is very easy to safety engineering, HVAC (Heating,
CASES (to be continued
self-draw the model using the free software Ventilation, and Air Conditioning), energy
o n n e xt p a g e ) Sketchup and then import. engineering, environmental engineering
and chemical engineering, etc. The related
‘The import feature of the (Simtec) update industries include construction, transport
is really good! I managed to import a large (tunnel & metro), chemical production, oil,
and complicated building in one minute. mining, military, aeronautics and space,
That's impressive! And more important, I nuclear, and environment protection, etc.
think that the imported geometry looks
really good.’ – from a Simtec customer.
Fire safety application is one of the main
‘I tried my import, and it looked really good! focus for Simtec. Simtec simulation
When I did an import it was really fast.’ – provides information on flow of gases,
from a Simtec customer. transient variation and spatial distribution
of pressure, temperature and
concentrations of smoke and different
Once geometry model is constructed, gases, variation of visibility for fire escape
Simtec has a very powerful geometry evaluation, heat flux on structure, three
processing capacity. With this geometry dimensional temperature distribution inside
processing, all the boundaries will be construction structure exposed in fire
automatically identified. However, if you do (Simtec provides an integrated fully
have particular type of boundary conditions coupled computation of three dimensional
to be imposed, you can easily use Simtec heat transfer inside the construction
boundary condition pre-processor to structure), fire growth, and fire
specify your particular boundary extinguishment by sprinkler, etc.
conditions.



Simtec APPLICATIO N
C AS E S ( t o b e

continued on next
page)
 FIRE ACCIDENT Simtec used for fire safety design of a
Simtec fire reconstruction and Swedish complex building. The geometry
RESCONSTRUCTION
investigation. Simtec successfully model is directly imported with ease from
& FIRE reconstructed the big fire accident 3D CAD geometry file.
INVESTIGATION happened in 1998, in Goteburg, Sweden

 TUNNEL FIRE
ANALYSIS

 COMPLEX BUILDING
FIRE SIMULATION Simtec used for fire safety design of a
Swedish mine. Simtec advanced solution
method makes this type of simulation very
 SIMULATION OF FIRE Simtec used to analyze tunnel fire. Simtec easy and efficient. (Simtec customer
IN MINING has great advantage for simulation of commented: ‘Simtec has great advantage
tunnel fire. It can simulate the fire in a long for such complex simulation. A large
tunnel very efficiently, even on a simple geometry divided into mesh with different
 SIMULATION OF FIRE desktop computer. sizes on cells depending on where the fire
EXTINGUISHMENT
is.’).
Simtec was successfully used to simulate
BY SPRINKLER
fire in a 4.8 km tunnel at its full length,
using a desktop computer. With Simtec
capability, more complicated tunnel fire
simulations are on planned by Simtec
users.
(Simtec users commented: ‘Simtec has
made such simulation easy. We could not
make such simulation at all without using
Simtec’).

Simtec used to analyze fire extinguishment
by sprinkler. Thanks to the deployed
unique combustion model, Simtec well
captures the fire extinguishment by
sprinkler.



Simtec APPLICATIO N
CASES

 SIMULATION OF
HIGH SPEED GAS Simtec simulation of high speed gas
leakage fire. Simtec advanced solution
LEAKAGE FIRE
method makes this type of simulation very
easy and efficient. (Simtec users
 SIMULATION OF OIL
commented: ‘It is very easy to make such
simulation with Simtec. When tried to use
POOL FIRE the free software, the simulation was with
numerical problem and could not go
through.’)
 SIMULATION OF
Simtec analysis of coupled three
SPONTANEOUS dimensional heat transfer inside solid
IGNITION FIRE structure exposed to fire. Shown is the
temperature at solid structure outer
surface, temperature at 3 mm inside from
 COUPLED THREE outer surface and temperature at a
horizontal slice section(the structure is
DIMENSIONAL
internally empty)
CALCULATION OF
Simtec simulation of evaporating oil pool
SOLID STRUCTURE fire. Simtec advanced solution method
TEMPERATURE IN makes this type of simulation smooth and
efficient, the result is also consistent with
FIRES typical oil pool fire data. (Simtec user also
tried to simulate it use the free software,
the free software predicted heat release
rate of around 40 MW/m2 which is likely
too far from reality, and also eventually ran
into numerical problem.)
Heat exchanger plate geometry

Simtec simulation of spontaneous ignition
fire. Thanks to the unique spontaneous A X-slice temperature A Z-slice temperature
ignition fire simulation capacity, Simtec
very well predicted the unknown Simtec easy simulation of heat exchanger,
spontaneous ignition fire phenomena to analyze flow and heat transfer in heat
which were later confirmed by experiment. exchanger


Ideon Science Park
Scheelevägen 15, Alfa 3
223 70 Lund, Sweden

Tel: +46 7339 15278 or +46 7068 26629
Email: Info@simtecsoft.com
Website: http://www.simtecsoft.com

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