CFD Review  
Serving the CFD Community with News, Articles, and Discussion
 
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service
twitter

Submit a CFD Story

Site Sponsors
CD-adapco
Pointwise: Reliable CFD meshing
ANSYS

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

 
Simulation of Human Flight in Wingsuits
Posted Wed May 28, 2008 @08:54AM
Print version Email story Tweet story
Application Flomerics and Matchstick Productions have released a short video which for the first time reveals the complex 3D airflow around a wingsuit that enables human beings to glide through the air like a bird.

The video combines actual footage of human flight in wingsuits with airflow simulations using computational fluid dynamics (CFD) software.


Sponsor CFD Review

The actual wingsuit flight segments come from the film “Seven Sunny Days” by Matchstick Productions. Flomerics’ EFD family of computational fluid dynamics (CFD) software was used to calculate the fluid flows and pressures that produce lift and drag forces that enable wingsuit fliers to glide with an extraordinary level of control that enables them to trace the contours of rock ledges and other obstacles from just a few feet away.

The wingsuit flier enters a freefall wearing both a wingsuit and a parachute. When exiting from a base jumping site or a helicopter, the flier begins with a vertical drop to use the forces of gravity to accelerate to a speed that the wingsuit can then use to produce lift. Wingsuit fliers typically fly at speeds of about 60 mph (95 km/h). The wingsuit flier manipulates the shape of their body to balance the aerodynamic forces and create the desired amount of lift and drag. The hands act as ailerons and very small hand movements control pitch and roll movements. An experienced flier can demonstrate amazing maneuverability by arching or bending at shoulders, hips and knees or changing the shape of their torso. The wingsuit flier finally lands by deploying their parachute.

Flomerics’ EFD software made it possible to use 3D computer aided design (CAD) geometry directly to represent the human body. Flomerics engineers added thin shell elements between the arms and torso and between the legs to create a model of a human wearing a wingsuit. The rotation of key body joints such as wrists, knees, elbows was specified and changed easily within the solid model. Then they attached boundary conditions to the model such as giving the body a forward velocity of 60 mph. All ancillary data required for flow simulation, such as material properties and boundary conditions were associatively linked to the CAD model and carried along with all design changes. The software analyzed the CAD model and automatically identified fluid and solid regions without user interaction. Then the automatic mesher created the mesh while maintaining an exceptionally high level of quality, eliminating the need for any manual intervention.

The ability to use the 3D CAD model directly was a key advantage in this analysis because of the need to model different arm, leg and hand positions in order to understand the extraordinary maneuverability of wingsuit fliers. The engineers performing the analysis simply changed the angles of various body joints in the CAD model. Then in a few minutes they were able to mesh the new models and perform CFD analysis in much less time than would be required using conventional CFD methods.

While many engineers still think of CFD software as being difficult, time-consuming and expensive to use, this application demonstrates that a new generation of CFD software has addressed all these concerns. EFD’s ability to integrate CFD into the design process allows design engineers to focus on the physics of the problem, which in most cases they already understand well, and generate results much more quickly. This makes it possible for design engineers to get reliable answers, gain insight, and deliver tangible results that lead to improvements in product performance, lower costs and reductions in time to market.

3D airflow around a wingsuit
Flomerics’ EFD software made it possible to show the 3D airflow around a wingsuit that enables human beings to glide through the air like a bird.

[ Post Comment ]

Software Cradle and WSU Open Center for High Performance Computing | Georgia Tech Motorsports Wins CFdesign Award  >

 

 
CFD Review Login
User name:

Password:

Create an Account

Related Links
  • Flomerics
  • Matchstick Productions
  • video
  • More on Application
  • Also by nwyman
  • 'Simulation of Human Flight in Wingsuits' | Login/Create an Account | Search Discussion

    The following comments are owned by whoever posted them.
    We are not responsible for them in any way.

    Let me do my TRIBUTE to FISHNET STOCKINGS ... All content except comments
    ©2014, Viable Computing.

    [ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]