Информация за научни
конференции и семинари, посветени на математичното моделиране и компютърната
симулация
( май, 2014)
Elements of Turbulence Modeling
June 4th & 11th 2014
Two Session Online Training Course
-
2 hours per session/One session per week
This course has been expanded from
the original one session to two sessions, in order to cover even more content
and allow more time for questions and tutor interaction.
Note: Once you register for the course
using the "order" button (look right), you will receive a
confirmation e-mail. Please click here to
view the FAQ section, or if you need to contact NAFEMS about this course.
Course Overview
Majority of
flows in nature and in engineering applications are turbulent. Turbulent flow
fields are three dimensional, chaotic, diffusive, dissipative, and random.
These flows are characterized by velocity fluctuations in all directions with
infinite number of scales. Exact analytical solution of Navier-Stokes
equations for turbulent flows is not currently possible since these equations
are elliptic, non‐linear, and coupled. Furthermore,
direct numerical simulation (DNS) of turbulent flows is not currently practical
due to significant computational resources required. So far, DNS approach has
only been applied for a limited class of simple low Reynolds number
applications.
Presently, turbulence modeling based on Reynolds-Averaged Navier Stokes (RANS) equations is the most common and
practical approach for turbulence simulation. RANS are time-averaged
modification of Navier-Stokes equations and
turbulence models are semi-empirical mathematical relations that are used to
predict the general effect of turbulence. The objective of turbulence modeling
is to develop equations that will predict the time-averaged velocity, pressure,
and temperature fields without calculating the complete turbulent flow pattern
as a function of time. Unfortunately, there is no single universally accepted
turbulence model that works for all flows and all regimes. Therefore, users
have to use engineering judgment to choose from a number of different
alternatives sine the accuracy and effectiveness of each model varies depending
on the application.
Course Process and Details
This course is completely code independent.
No software is required.
E-learning courses are great alternatives and complements for
continued education as they offer convenience and eliminate the need to travel.
Successful application of turbulence modeling requires engineering
judgment depending on physics of the flow, accuracy, project requirements,
turnaround time, and computational resources available. This course offers the
attendees the practical knowledge for using turbulence modeling for complex
engineering applications. Through a simple and moderately technical approach,
this course describes why we need turbulence modeling and how these models
represent turbulent flows. Various approaches and number of popular turbulence
models will be discussed along with advantages and disadvantages of these
models. Many of the governing and transport equations will be presented for
illustration purposes and may not be dealt in depth in this course. Strong
effort is made for the course to be software neutral. However, examples from
some of the more well known and popular simulation cases and software will be
used throughout the session. Full notes are provided for the attendees.
Students
will join the audio portion of the meetings by utilizing the VoIP (i.e. headset connected to the computer via headphone
and microphone jacks) or by calling into a standard toll line. If you are
interested in additional pricing to call-in using a toll-free line, please send
an email to: e-learning @ nafems.org .
Who Should Attend?
This course
will be valuable to all engineers aiming to use CFD as a reliable predictive
tool for complex flow problems. The target audience for this course is
practicing engineers who wish to learn more about how to choose and apply
effective turbulence modeling in their CFD analysis. Ideally, the
participant should have some knowledge of CFD analysis, but this is not
essential. The material that is presented is independent of any particular
software package, making it ideally suited to current and potential users of
all commercial and non-commercial CFD software systems.
E-learning
classes are ideal for companies with a group of engineers requiring training.
E-learning classes can be provided to suit your needs and timescale. Contact us
to discuss your requirements.
Course Program
Session 1: Wednesday June
4th 2014
Session 2: Wednesday June
11th 2014
Course
Content
- Understanding turbulence
- Turbulence energy cascade & vortex
stretching
- Turbulence scales
- Turbulence generation and destruction
- Discussion on DNS & LES
- Turbulent stresses
- RANS simulation
- Turbulence modeling
- First order models: One-equation &
Two-equations models
- Wall integration & wall function
- Detached eddy simulation
- URANS
- Model comparison: advantages and
disadvantages
- Model Validations
Feedback from former eLearning
students:
"This
course did everything right. From organization to presentation to interaction,
this is a good model for what online training should be."
B.T.
"Super!
Doesn't get better than this. Good idea to start
having e-Learning courses."
R.P.
"I'm
really happy not to pay a big fraction of my annual training budget to airlines
and hotels. A BIG plus to e-learning."
V.G.
Special Note(s):
Telephony
surcharges may apply for attendees who are located outside of
Just as with a live face-to-face training course, each
registration only covers one person. If you plan to register a large group
(10+), please send an email to e-learning @ nafems.org in advance for group discounts.
Accelerating
the Future of CAE
NAFEMS UK
Oxford , UK
Agenda now available - click below to download
Registration
now closed. Please contact NAFEMS on 01355 225688 for further details if
required.
What is the future for Computer Aided
Engineering (
Where is engineering analysis and
simulation going?
Where should it be going, and how will we all help get it there?
What are the business, technological,
and human enablers that will carry the past successful developments,
applications, and business impact of
NAFEMS, the independent association for the engineering analysis
community, is holding its
This two-day conference focused on
existing best practices as well as state-of-the-art in FEA, CFD and associated
technologies –ensuring delegates receive a fully comprehensive overview of the
technology available to them.
The conference increased awareness
and provided a discussion forum for topics that are vital to engineering
industrialists and academics, offering attendees an unrivalled combination of
industrial knowledge, expertise and forward-thinking to aid their deployment of
As part of the conference, the NAFEMS
The conference included a two-day
workshop on Optimisation, and presentations are also
invited which could be included in this track.
Registration
(Registration are now closed)
You can register to attend using the
"order" button on the left.
Members of NAFEMS FREE *
Members of NAFEMS without sufficient seminar credits £275
**
Students £100**
Non-members of NAFEMS £365 **
Entrance to Exhibition only FREE (this will
be strictly monitored)
*subject
to availability of sufficient seminar credits – this event will utilise 4 seminar credits per delegate.
**VAT
at 20% should be added for all delegates
Please note that the above
registration fees apply to both presenters and
delegates.
These fees include attendance at the
conference, one copy of the proceedings, lunch on both days,
morning and afternoon tea and coffee on each day. Hotel accommodation is not included.