Surya Vanka

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The heat generation and fluid convection induced by plasmonic nanostructures is attractive for optofluidic applications. However, previously published theoretical studies predict only nanometre per second fluid velocities that are inadequate for microscale mass transport. Here we show both theoretically and experimentally that an array of plasmonic(More)
Transient flow events can be very important to the generation of quality problems during the continuous casting of steel. In this work, several different tools are applied to investigate these phenomena. Transient flow is computed using Large Eddy Simulation (LES) models, while conventional K-ε models yield time-averaged results. Particle Image Velocimetry(More)
Starting in 1996, the authors, Surya Vanka and Jim Budd developed ID-Online, an Asynchro-nous Learning Network (ALN) for Industrial Design Education at the University of Illinois at Urbana-Champaign. The primary objective of ID-Online was to deliver enhanced design instruction via asynchronous access to design resources and enhance network-based(More)
Transient flow during nominally steady conditions is responsible for many intermittent defects during the continuous casting of steel. The double-ruler electromagnetic field configuration, or ''FC-Mold EMBr,'' is popular in commercial slab casting as it provides independent control of the applied static field near the jet and free surface regions of the(More)
Particle motion and capture in continuous steel casters were simulated using a Lagrangian trajectory-tracking approach, based on time-dependent flow fields obtained from large eddy simulations (Part I). A computation was first conducted on a water model of a full-scale standard slab caster, where measurements were available. It simulated the transport of(More)
In the present paper, several turbulence models have been evaluated in a channel and a square duct flow with and without a magnetic field by comparing the predictions with Direct Numerical Simulations (DNS) data. The various turbulence models include high and low Reynolds number versions of the k-ε model, low and high-Re versions of the Reynolds-stress(More)