Do you need help? Please contact our support team from 9 to 17 CET via support.pressclub@bmwgroup.com.

PressClub Belux · Article.

Le rôle d’ordinateurs puissants dans le développement de la nouvelle BMW M4 DTM: un regard détaillé sur la dynamique des fluides assistée par ordinateur.

Au moment où les six nouvelles BMW M4 DTM prendront leur place sur la grille de départ de la course inaugurale de la saison DTM le 6 mai prochain, ce sera la fin d’une longue et intense période de développement. Une part considérable de ce développement a eu lieu avec l’aide de simulations informatiques. Aujourd’hui, il est difficilement imaginable de développer une voiture sans l’aide de l’étude de la dynamique des fluides assistée par ordinateur.

Automotive
·
BMW Motorsport
 

Press Contact.

Christophe Weerts
BMW Group

Tel: +32-3-890-9708
Fax: +32-3-890-9898

send an e-mail

Downloads.

  
Attachments(1x, 77,29 KB)
  
Photos(2x, 4,11 MB)

Other Languages.

Au moment où les six nouvelles BMW M4 DTM prendront leur place sur la grille de départ de la course inaugurale de la saison DTM le 6 mai prochain, ce sera la fin d’une longue et intense période de développement. Une part considérable de ce développement a eu lieu avec l’aide de simulations informatiques. Aujourd’hui, il est difficilement imaginable de développer une voiture sans l’aide de l’étude de la dynamique des fluides assistée par ordinateur.

 

///

Munich. When the six new BMW M4 DTMs take their place on the grid for the DTM season-opener on 6th May 2017, it will mark the temporary end of a long and intense period of development. A considerable part of this development took place with the aid of computer simulations. It is hard to imagine car development without computational fluid dynamics (CFD) these days.

During the creation of a new race car, the smallest details can bring about a decisive advantage in the battle for those fractions of a second on the circuit. It is no wonder that the BMW Motorsport engineers leave nothing to chance. That is why the CFD flow calculations are of such special importance. The development of digitalisation has changed racing car design. Engineers can identify the most promising solutions for specific components without leaving the computer.

On computers, the aerodynamics experts simulate the effects of changes to the individual parts of each car – before the components have even been built. In the calculation, the model is split into a grid of 500 million three-dimensional cells, and the virtual airflows through them. Each of the cells can be separately analysed, sometimes for an entire day, depending on the type of simulation. Only half of a vehicle is required, as the air flow for straight-line travel is identical for both sides of the car.

BMW Motorsport employs experienced aerodynamicists to interpret the calculated values. Despite the quality of the CFD simulation, the technical expertise of the aerodynamicists is still a decisive factor in drawing the correct conclusions from the results. After precise analysis of the pressure distribution, flow lines and many other details, the aerodynamicists can make a specific recommendation for changes to be made to the components. If the part has proved itself during simulation, variations are tested in the wind tunnel on a scaled down, 60 per cent model. The computer-aided flow simulation is not intended to replace wind tunnel work, but complements it.

The preliminary calculations are dealt with by an armada of high-performance computers. BMW Motorsport uses the BMW cloud system to dynamically adjust the number of computers in use, and adjust the load for other users within the BMW Group. This bandwidth and availability of computing power means that it is possible to perform multiple calculations in parallel. The result: even more efficiency and precision in the development of BMW Motorsport racing cars – like the new BMW M4 DTM.

Article Offline Attachments.

Article Media Material.

My.PressClub Login
 

BMW Group Streaming.

ANNUAL GENERAL MEETING 2017.

Munich. Here you can see the transmission of the Annual General Meeting of the BMW Group.

open streaming site

CO2 emission information.

Fuel consumption figures based on the EU test cycle, may vary depending on the tyre format specified. Further information on official fuel consumption figures, specific CO2 emission values and the electric power consumption of new passenger cars is included in the “Guideline for fuel consumption, CO2 emissions and electric power consumption of new passenger cars", which can be obtained from dealerships and here as PDF.

Latest Facts & Figures.

Nouveaux prix BMW septembre 2011 - Luxembourg.
Thu Sep 01 16:30:00 CEST 2011
Pricing
Nouveaux prix MINI septembre 2011 - Luxembourg.
Thu Sep 01 16:27:00 CEST 2011
MINI
Nouveaux prix MINI septembre 2011.
Thu Sep 01 16:21:00 CEST 2011
MINI
Nouveaux prix BMW septembre 2011.
Thu Sep 01 16:16:00 CEST 2011
Pricing
Show all

Add your filter tags.

Communiqué de presse
Dossier de presse
Discours
Fact & Figures
Updates
Top-Topic
Submit filter
Clear all
 
Sun
Mon
Tue
Wed
Thu
Fri
Sat
 
Login