Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Rajendran, Lalit K."'
Spark discharges induce a complex flow field consisting of a shock wave at early times (~ 1 $\mu$ s), a pair of vortex rings, and a hot gas kernel. The vortex rings entrain ambient gas into the hot gas kernel and control its cooling and expansion. In
Externí odkaz:
http://arxiv.org/abs/2101.07358
Uncertainty quantification for Particle Image Velocimetry (PIV) is critical for comparing flow fields with Computational Fluid Dynamics (CFD) results, and model design and validation. However, PIV features a complex measurement chain with coupled, no
Externí odkaz:
http://arxiv.org/abs/2012.11682
Nanosecond Surface Dielectric Barrier Discharge (ns-SDBDs) are a class of plasma actuators that utilize a high-voltage pulse of nanosecond duration between two surface-mounted electrodes to create an electrical breakdown of air, along with rapid heat
Externí odkaz:
http://arxiv.org/abs/2010.08446
Publikováno v:
Phys. Rev. Fluids 5, 114501 (2020)
Spark plasma discharges induce vortex rings and a hot gas kernel. We develop a model to describe the late stage of the spark induced flow and the role of the vortex rings in the entrainment of cold ambient gas and the cooling of the hot gas kernel. T
Externí odkaz:
http://arxiv.org/abs/2007.11065
We theoretically analyze the effect of density/refractive-index gradients on the measurement precision of Volumetric Particle Tracking Velocimetry (V-PTV) and Background Oriented Schlieren (BOS) experiments by deriving the Cramer-Rao lower bound (CRL
Externí odkaz:
http://arxiv.org/abs/1910.09379
Autor:
Rajendran, Lalit K., Zhang, Jiacheng, Bhattacharya, Sayantan, Bane, Sally P . M., Vlachos, Pavlos P.
We present an uncertainty quantification methodology for density estimation from Background Oriented Schlieren (BOS) measurements, in order to provide local, instantaneous, a-posteriori uncertainty bounds on each density measurement in the field of v
Externí odkaz:
http://arxiv.org/abs/1909.06643
We propose a dot-tracking methodology for processing Background Oriented Schlieren (BOS) images. The method significantly improves the accuracy, precision and spatial resolution compared to conventional cross-correlation algorithms. Our methodology u
Externí odkaz:
http://arxiv.org/abs/1812.10870
We present an image generation methodology based on ray tracing that can be used to render realistic images of Particle Image Velocimetry (PIV) and Background Oriented Schlieren (BOS) experiments in the presence of density/refractive index gradients.
Externí odkaz:
http://arxiv.org/abs/1812.05902
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