Method for enriching flame simulation details through turbulence equation

Abstract

The invention relates to a method for enriching flame simulation details through a turbulence equation. The method comprises the steps that (1) an Euler method based on a grid is adopted, a Navier-Stokes equation is solved in an accelerated mode through a CUDA, and a speed field of flames, a density field of the flames and a temperature field of the flames are obtained; (2) the standard k-e turbulence equation is simplified by the adoption of the particle method, and the CUDA is used for accelerating solving to obtain the turbulence energy and the energy dissipation rate of a particle; (3) a narrowband random texture field is generated, then the rotation is solved to obtain the speed field, and sampling is conducted in the random speed field according to the position of the particle to obtain the speed of the position where the particle is located; (4) the turbulence speed of the particles is synthesized, then the speed is used for disturbing the speed of the positions of network nodes in a neighborhood of the particle at the Gauss attenuation weight, and the density field and the temperature field are driven to move; (5) the CUDA and mapping of a buffer area of an OpenGL are used for directly rendering a data field worked out by the CUDA, and flame surface patches are obtained.

Description

technical field [0001] The invention relates to a method for enriching flame simulation details with turbulent flow equations, and belongs to the field of virtual reality science and technology. Background technique [0002] Flame is one of the basic elements of nature, and it is closely related to the survival and life of human beings. Real reproduction of flames in the virtual world can help human beings to enhance their cognition, grasp the laws, improve human behavior, and better follow the laws. work. Realistic simulation of flames has important scientific value and economic benefits in the fields of fire training, military simulation, film and television special effects, and virtual reality, and is also one of the most challenging research directions in computer graphics. [0003] Combustion is a fast hydrodynamic process with chemical reactions, which is affected by many factors. Almost all combustion processes are accompanied by flow processes, and the flame produc...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: aiming at the present situation that the turbulence details are lost and the sense of reality is not strong in the current flame simulation, a flame simulation method with enhanced turbulence details is proposed, and the turbulent motion of the three-dimensional flame is modeled and simulated, so that the flame 3D simulation effect is more realistic

Images