Visualization of Advection-Diffusion in Unsteady Fluid Flow

Advection has been the standard transport mechanism in flow visualization. Diffusion, in contrast, has not been considered important in visual flow field analysis so far, although it is inherent to many physical processes. We present a novel technique that allows for interactive 3D visualization of...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Computer graphics forum Ročník 31; číslo 3pt2; s. 1105 - 1114
Hlavní autoři: Karch, Grzegorz Karol, Sadlo, Filip, Weiskopf, Daniel, Munz, Claus-Dieter, Ertl, Thomas
Médium: Journal Article
Jazyk:angličtina
Vydáno: Oxford, UK Blackwell Publishing Ltd 01.06.2012
Témata:
Advection
Analysis
Computational fluid dynamics
Computer graphics
Diffusion
Dyes
Fluid dynamics
Fluid flow
I.6.6 [Simulation and Modeling]: Simulation Output Analysis
Interactive
J.2 [Physical Sciences and Engineering]: Physics
Studies
Unsteady
Visualization
ISSN:0167-7055, 1467-8659
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:Advection has been the standard transport mechanism in flow visualization. Diffusion, in contrast, has not been considered important in visual flow field analysis so far, although it is inherent to many physical processes. We present a novel technique that allows for interactive 3D visualization of both advection and diffusion in unsteady fluid flow. We extend texture‐based flow visualization, which is advection‐oriented, by diffusion. Our finite volume approach based on WENO (weighted essentially non‐oscillatory) reconstruction is well parallelizable and features low numerical diffusion at interactive rates. Our scheme contributes to three different applications: (a) high‐quality dye advection at low numerical diffusion, (b) physically‐based dye advection accounting for diffusivity of virtual media, and (c) visualization of advection‐diffusion fluxes in physical media where the velocity field is accompanied by a concentration field. Interactive rendering of the virtual dye is accomplished by ray casting. We apply our GPU implementation to CFD examples of thermal convection and evaporation phenomena.
Bibliografie:istex:3AA6927FFFECD1BEDA02F0D098E57201810B7F53
ark:/67375/WNG-3KG82CT4-2
ArticleID:CGF3103
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-2
content type line 23
ISSN:0167-7055
1467-8659
DOI:10.1111/j.1467-8659.2012.03103.x