Accession Number : ADA329113

Title :   Strategies for Effectively Visualizing a 3D Flow Using Volume Line Integral Convolution.

Descriptive Note : Final rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Interrante, Victoria ; Grosch, Chester

PDF Url : ADA329113

Report Date : AUG 1997

Pagination or Media Count : 12

Abstract : This paper discusses strategies for effectively portraying 3D flow using volume line integral convolution. Issues include defining an appropriate input texture, clarifying the distinct identities and relative depths of the advected texture elements, and selectively highlighting regions of interest in both the input and output volumes. A part from offering insights into the greater potential of 3D LIC as a method for effectively representing flow in a volume, a principal contribution of this work is the suggestion of a technique for generating and rendering 3D visibility-impeding 'halos' that can help to intuitively indicate the presence of depth discontinuities between contiguous elements in a projection and thereby clarify the 3D spatial organization of elements in the flow. The proposed techniques are applied to the visualization of a hot, supersonic, laminar jet exiting into a colder, subsonic coflow.

Descriptors :   *THREE DIMENSIONAL FLOW, *CONVOLUTION INTEGRALS, INPUT, OUTPUT, VOLUME, INTEGRALS, FLOW VISUALIZATION, DEPTH, DISCONTINUITIES, LAMINAR FLOW, JET FLOW.

Subject Categories : Numerical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE