Review of Visualization Drawing Methods of Flow Field Based on Streamlines

Abstract

Flow visualization is an important branch of scientific computational visualization.It mainly visualizes the simulation calculation results of computational fluid dynamics,and provides researchers with visually intuitive graphical images to facilitate researchers' analysis.The known techniques for flow visualization include geometric-based methods:such as streamline,particle tracking methods;and texture-based methods:LIC,spot noise and IBFV.Streamline visualization is an important and commonly used geometric visualization method for flow field visualization.In the study of streamline visualization,the placement of streamline is the focus of the entire streamline visualization,and the number and position of streamline affect the entire visualization effect.When too many streamlines are placed,it will cause visual clutter,and too little cause the flow field information to be incompletely expressed and cannot be transmitted to domain experts.In order to achieve accurate display of scientific data,streamline visualization has generated two important research directions:placement of seed points and reduction of streamline.This article introduces the related research of seed point placement method and streamline reduction method,summarizes some problems and solutions adopted in 2D and 3D flow fields,and proposes the need for streamline visualization in view of the growing scientific data in the future.

Keywords

• streamline placement|seeding strategy|streamline reduction|flow visualization|scientific visualization