Abstract:

Based on the divided computing nets in computational fluid dynamic(CFD) and by using the continued color shading algorithms, the paper identifies the steps involved in the scientific visualization and animation of CFD results in 2D scalar data fields. The methods of the triangle element division from general rectangle elements and the shading algorithm combined with Gouraud-Shading and barycentric interpolation are described in detail in this paper. According to the characteristics and properties of HSV color model in the computer graphics, the two different kinds of linear interpolations between scalar data and used color value are used to visualize the CFD results in the form of static state and dynamic state. As an example, the procedure to simulate the changes of fluid function and turbulence strength values resulting from CFD for a wing section is presented to demonstrate that the proposed methods are viable.

Key words: visualization in scientific computing, computer graphics, comput ationalfluid dynamic