About

What is Computational Fluid Dynamics?

Computational Fluid Dynamics (CFD) is the systematic application of computing systems and computational solution techniques to mathematical models formulated to describe and simulate fluid dynamic phenomena.

CFD is part of computational mechanics, which in turn is part of simulation techniques. Simulation is used by engineers and physicists to forecast or reconstruct the behavior of an engineering product or physical situation under assumed or measured boundary conditions (geometry, initial states, loads, etc.). A variety of reasons can be cited for the increased importance simulation techniques have achieved in recent years:

  • Need to forecast performance
  • Cost and/or impossibility of experiments
  • The desire for increased insight
  • Advances in computer speed and memory (1:10 every 5 years)
  • Advances in solution algorithms

The simulation of flows is accomplished by:

  • Solving numerically partial differential equations (PDEs),
  • Following the interaction of a large numbers of particles, or
  • A combination of both.

CFD, by its very nature, encompasses a variety of disciplines, which may be enumerated in the following order of importance:

  • Engineering
  • Physics
  • Mathematics (classic and numerical analysis, discrete mathematics)
  • Computer Science (algorithms, coding, software)
  • Visualization Techniques
  • User Community (benchmarking, documentation, teaching)

Trips and Discussions

On the many trips we take around the globe in pursuit of knowledge, we also take advantage of collaborative discussions `in the field’. Here are some examples:

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A high-level discussion on multi-physics

A high-level discussion on multi-physics

eccomas

The Study of Waves…

The study of waves…

japan2

A more traditional discussion

A more traditional discussion

reno02

Another high-level collaborative discussion

Another high-level collaborative discussion

reno03

And yet another high-level collaborative discussion

And yet another high-level collaborative discussion

aj_lohner2

Seven years in Tibet … or seven hours in Squaw Valley

Seven years in Tibet … or seven hours in Squaw Valley

shadow_mid

We will teach CFD to any attentive and willing pupil

We will teach CFD to any attentive and willing pupil

santiago

A scientific meeting in the Andes

A scientific meeting in the Andes

flying11

Theoria cum Praxis opens new vistas

Theoria cum Praxis opens new vistas

flying14

Vista

Vista

flying15

Vista

Vista

kcomp12

An encounter with the matrix

An encounter with the matrix

montserrat12

Going the distance in Catalunya

Going the distance in Catalunya

SAMSUNG

In the temple of grid generation with the chief druid

In the temple of grid generation with the chief druid

hawaii12

Trying to understand lava flows

Trying to understand lava flows

oliver_idelsohn_lohner_2019

After some deep thoughts…

After some deep thoughts…

letrabet_idelsohn_oliver_1

Dinner

Dinner

tibidabo_2018

A high level meeting with views of Barcelona

A high level meeting with views of Barcelona

Steve_Zalesak

CFD breakfast with one of originators of FCT

CFD breakfast with one of originators of FCT

AF_AD_FT_RL_letrabet_2018

Discussing CFD and life in general under the plane trees

Discussing CFD and life in general under the plane trees

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The PAM-140 gathering at Le Trabet 2019

The PAM-140 gathering at Le Trabet 2019

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The unforgettable asados of the ENIEF conferences

The unforgettable asados of the ENIEF conferences

Jameson_and_RL_aiaa_jan_2020

With the grandmaster of CFD on the occasion of his 85th birthday celebration at AIAA SciTech 2020

With the grandmaster of CFD on the occasion of his 85th birthday celebration at AIAA SciTech 2020

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eccomas
japan2
reno02
reno03
aj_lohner2
shadow_mid
santiago
flying11
flying14
flying15
kcomp12
montserrat12
SAMSUNG
hawaii12
oliver_idelsohn_lohner_2019
letrabet_idelsohn_oliver_1
tibidabo_2018
Steve_Zalesak
AF_AD_FT_RL_letrabet_2018
PAM_140_group
asado_enief_1
Jameson_and_RL_aiaa_jan_2020
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Past Events:

Symposia and Conferences:

March 2009Computational Mechanics: The Next Decade

This Symposium was organized on the occasion of Prof. Rainald Löhner’s 50th birthday, and took place Friday, March 27, 2009, at the Fairfax campus of George Mason University. Invited speakers and attendees from all over the world were present.

The detailed program may be seen here.

The book of abstracts here.

Pictures of the symposium, kindly taken by Mr. Duane King, many be seen below.

At the symposium, Mrs. Claudia S. Löhner set up a small photo studio. Many of the attendees took advantage of the opportunity; some of the portraits may be seen below.