Surya Vanka

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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)
Turbulent structures are important in influencing inclusion transport in continuous casting of steel. The turbulent velocity field and inclusion transport are studied in a full-scale water model using large eddy simulations. The computed fluid velocities are compared with measurements. Chaotic vortex structures were computed in the upper roll region as(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)
With single-core speeds no longer rising, dramatically increased parallelism is now the means of getting more performance from supercomputers. The current generation of algorithms run on these machines will have to adapt to this new landscape. In this dissertation, we focus on algebraic multigrid (AMG), a popular linear solver with many scientific and(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)