Animation provides intuitive cueing for revealing essential spatial-temporal features of data in scientific visualization. This paper explores the design of Repeated Asymmetric Patterns (RAPs) in animating evenly-spaced color-mapped streamlines for dense accurate visualization of complex steady flows. We present a smooth cyclic variable-speed RAP animation model that performs velocity (magnitud...

We study the asymptotic behavior and the asymptotic stability of the two-dimensional Euler equations and of the two-dimensional linearized Euler equations close to parallel flows. We focus on flows with spectrally stable profiles U (y) and with stationary streamlines y = y0 (such that U ′(y0) = 0), a case that has not been studied previously. We describe a new dynamical phenomenon: the depletio...

We consider a passive scalar that is advected by a prescribed mean zero divergence-free velocity field, diffuses, and reacts according to a KPP-type nonlinear reaction. We introduce a quantity, the bulk burning rate, that makes both mathematical and physical sense in general situations and extends the often ill-defined notion of front speed. We establish rigorous lower bounds for the bulk burni...

Hatching lines are often used in line illustrations to convey tone and texture of a surface. In this report an approach for rendering hatched line drawings for polygonal meshes is presented.The proposed method allows the generation of hatching lines for interactive on-screen display as well as for vector-based printer output.We use local curvature information to compute streamlines on the surfa...

A vital part of microfluidic designs is to impose control over fluid streamlines by microscale structures. In this paper, we describe a method to control streamline steering through different microfluidic entangled networks. These networks were constructed by stacking two distinguishable layers of microchannels face-to-face. We have developed four fundamental nodes, called R, L, N and Z that we...

Analysis of lid driven square cavity flow air with three different ranges Ri and Re are analyzed using numerically. Adiabatic temperature is maintained at horizontal walls isothermal established the vertical in which top wall assumed to slide a uniform speed. Finite volume method techniques have used solve non dimensional governing equations. To visualize thermal characteristics, control parame...

Surface oil flow is an experimental flow visualization technique that depicts the surface flow pattern near the body of the model. Traditionally, a particle tracking technique that generates streamlines near the model body is used to depict surface flows in CFD flow simulations. In this paper, we compared surface flows represented by streamlines with those represented by a texture technique kno...

Many computer aided diagnosis (CAD) schemes have been developed for colon cancer detection using Virtual Colonoscopy (VC). In earlier work, we developed an automatic polyp detection method integrating flow visualization techniques, that forms part of the CAD functionality of an existing Virtual Colonoscopy pipeline. Curvature streamlines were used to characterize polyp surface shape. Features d...