Shanti Bhushan

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Scalability studies are performed for CFDShip-Iowa URANS/DES curvilinear and Cartesian grid solvers and calculations are performed using largest grids to date. Verification and validation study is performed for V4-DES solution for DTMB 5415 with bilge keels at 20 static drift using up to 250M grid. The instantaneous and mean flow field is analyzed to(More)
Scalability studies and computations using the largest grids to date for free-surface flows are performed using message-passing interface (MPI)-based CFDShip-Iowa toolbox curvilinear (V4) and Cartesian (V6) grid solvers on Navy high-performance computing systems. Both solvers show good strong scalability up to 2048 processors, with V6 showing somewhat(More)
BACKGROUND The purpose of our study has been to evaluate the efficacy of single photon emission computed tomography (SPECT) over planar bone scan in identifying solitary vertebral lesions in patients with low backache and its ability to differentiate various pathologies according to the uptake pattern. MATERIALS AND METHODS The study included twenty(More)
The recent development of CFDShip-Iowa Version 6, a high-performance, high-fidelity Cartesian grid solver for computational ship hydrodynamics, is presented. First, a wall function approach has been introduced for wall-layer modeling based on the immersed boundary method and the one-equation Spalart-Allmaras turbulence model. Second, in order to develop(More)
-The objectives of this study are as follows: (i) Discuss the necessity of HPC in remote sensing community towards contemporary scientific solution requirements; (ii) Investigate the speedup in performance of the template matching algorithm with FFT parallelization using hybrid Central Processing Units (CPUs)/Graphics Processing Units (GPUs); (iii) Apply(More)
Turbulent simulations using URANS, DES and LES models are performed for a three-blade marine turbine appended with support struts. Predictions of thrust, power, and the mean and turbulent wakes in the near and intermediate wake region are compared with experimental data. The thrust and power coefficient predictions compare within 5% of the experimental data(More)
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