Based On OSG Flow Simulation And Visualization

Along with the computer graphics research more and more deepth,virtual reality technology is becoming more and more mature.There appeared the digital earth,digital city,such as noun,popularization of the people’s perception of graphics,at the same time to study and put forward higher request for virtual reality.Virtual reality technology is the human survival environment for computer graphics,the user experience the magic of science and technology in the virtual world.In order to enhance the fidelity of virtual reality scene,enhance the user immersive,to elaborate simulation for objects in the scene,in order to achieve the effect of the virtual reality environment.In virtual reality technology,the flow simulation research make the virtual scene can not only boost fidelity,and users have more immersive.Flow simulation research on reality and has the high real-time requirements.In flow simulation research,how to solve the stochastic,directivity,and optical properties of the corrugated has become a key problem.Also in the study of the flow simulation for concrete channel environment defined problem research branch of river boundary,the velocity and direction.In view of the above analysis,flow simulation,the author of this paper on the basis of the analysis of research status at home and abroad,put forward in this paper,we study the purpose and significance,combined with related technology development platform,for implementing the verification algorithm research.This article mainly launches the research from the following several aspects.(1)In terms of the surface wave modeling,Gerstner and Simplex Noise excitation source fusion algorithm,formed by the disturbance of surface wave height map model.Two-dimensional Simplex Noise as the 3 d Gerstner wave model on the y direction of excitation source,to disturbance of three-dimensional Gersnter highly value y,generate the water height map.(2)In terms of surface rendering,application based on the programmable GPU rendering pipeline,through multiple texture mapping technology,the production of water ripple,flow,direction control,boundary definition and Fresnel illumination effect.(3)Combined with OSG 3d graphics application platform development library,using MFC framework development flow simulation system,validation based on Gerstner and Simplex Noise excitation source fusion algorithm of the feasibility of water simulation,virtual reality scene shows different conditions of water.