Be it in urban planning or in the automotive industry – the airflow around buildings, aircraft and cars must be taken into account at the design stage. Virtual wind tunnels help to save costs and improve the design in the virtual product development phase. During the design process, the physical properties of 3D models are analyzed using computer simulations. Computing the flow via simulation is usually very time-consuming and interrupts the design process. The demonstrator “Tangible Simulation” shows that simulations can be interactive as well.
The idea of the simulator is:
- to simulate physical phenomena in fractions of a second by means of new algorithms and
- to directly visualize the simulation while it is being computed and influence it interactively.
This is how the demonstrator works:
In the demonstrator “Tangible Simulation” the wind flow around several real objects is computed and visualized in terms of velocity and pressure fields. If the real objects are moved, their positions and velocities are captured by a camera and are directly incorporated into the simulation as boundary conditions. Capture, simulation and visualization are closely linked, allowing for interactive optimization. Thus, the user can interactively analyze the impact of the objects’ position changes with respect to the flow field.
Potential applications are:
One of our goals is to make flow simulations interactive, i.e. to compute individual time steps in fractions of a second. The resulting computations are not as accurate as in traditional simulation applications. However, this concept allows for interactive optimizations, resulting in significant improvements in early design stages, thus accelerating the development.
About the group “Interactive Simulation”
The main focus of the group “Interactive Simulation” is on increasing the interactivity of simulations. We use state-of-the-art GPU computing methods and integrate modeling, simulation and visualization. In doing so, we shorten the design process and allow users to directly influence the simulation process. We provide this expertise as a CUDA competence center.