Research On Fluid Modeling Technology Of SPH Method For Virtual Dujiangyan

The Dujiangyan is an important scientific and technological invention in ancient China.It is a typical representative of traditional water conservancy culture.It contains rich historical experience and wisdom and has great value.The Dujiangyan project conforms to the hydrological laws and geographical features of the Minjiang River.The concept of respecting nature and conforming to natural rules runs through the Dujiangyan Project,which can withstand the test of thousands of years.In order to improve the public’s understanding of Dujiangyan ’s water conservancy culture,this paper takes Dujiangyan’s three major water conservancy projects Baopingkou,Yuzui,Feishayan as the research object,combined with virtual reality technology,designed Dujiangyan virtual roaming system,so that users can browse Dujiangyan from a long distance and acquire the relevant knowledge of Dujiangyan.In order to better explain the water conservancy principle of Dujiangyan,this paper carries out the simulation of Dujiangyan watershed,and uses smooth particle hydrodynamics method to simulate the change of water flow at Yuzhui and Feishayan.This paper first introduces the background and research significance of Dujiangyan virtual roaming system design and fluid simulation,and studies the development of fluid simulation,smooth particle hydrodynamics,digitalization of Dujiangyan and virtual reality technology at home and abroad.On this basis,the research work of this paper is completed.The specific work is as follows:Firstly,the basic methods and ideas of smoothed particle hydrodynamics are analyzed,and the main methods of peripheral particle search and boundary treatment in smoothed particle hydrodynamics are summarized.At the same time,based on the predictive-corrective smoothing particle hydrodynamics method,this paper puts forward GPU improvement ideas.Based on this method,the simulation work is completed to verify the scientificity of the three major projects of Dujiangyan.Secondly,based on the simulation results,Dujiangyan science video production was completed and combined in the Dujiangyan virtual roaming system.Dujiangyan virtual roaming system is based on questionnaire survey.The system completes the framework design and functional module design of the system on the basis of integrating the needs of two types of users.Through the roaming function,it can satisfy users’ desire to browse Dujiangyan from a long distance.Through video function,the water culture of Dujiangyan isconveyed to users.Finally,the article analyzes the simulation results of the three major projects of Dujiangyan,and simultaneously tests the cognitive effects of popular science videos,and conducts user experience evaluation of the entire Dujiangyan virtual roaming system.Through the analysis of the evaluation results,the value of Dujiangyan virtual roaming system and its future development direction are summarized.