Real-time 2-D fluid simulation with a GPU acceleration

Stable Fluids provide a standard technique for the simulation of fluid dynamics in computer graphics, but inherently create certain degree of numerical dissipativity. To overcome this shortcoming, we introduce simplified marker and cell (SMAC) method in computational fluid dynamics (CFD) into the computer graphics to perform two-dimensional dynamic simulation of fluids in conjunction with boundary conditions and related techniques used in CFD. Using Stable Fluids and SMAC respectively, we conducted computer simulations on Kárman vorticity and trailing flow for hydrofoils of turbine machine in engineering situations, running on GPU hardware platform. The results showed that the SMAC-based simulation technique displays stronger photo reality and physical reality than one based on Stable Fluids. As a result, it can be used to perform reproducible experiments in engineering applications. Moreover the SMAC noise texture mixing technique can more accurately reflect the physical details of fluid's flowing, which is useful in both computer graphics and visualization of data of vector fields.