37 citations · 172 across the 8 of their papers we have counts for
9 papers
Meta-Uncertainty for Particle Image Velocimetry
Lalit K. Rajendran, Sayantan Bhattacharya, Sally P. M. Bane +1
Uncertainty quantification for Particle Image Velocimetry (PIV) is critical for comparing flow fields with Computational Fluid Dynamics (CFD) results, and model design and validati…
Filamentary Surface Plasma Discharge Flow Length and Time Scales
Lalit K. Rajendran, Bhavini Singh, Pavlos P. Vlachos +1
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 elec…
Vortex rings drive entrainment and cooling in flow induced by a spark discharge
Bhavini Singh, Lalit K. Rajendran, Jiacheng Zhang +2
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 en…
Weighted Least Squares (WLS) Density Integration for Background Oriented Schlieren (BOS)
Lalit Rajendran, Jiacheng Zhang, Sally Bane +1
We propose an improved density integration methodology for Background Oriented Schlieren (BOS) measurements that overcomes the noise sensitivity of the commonly used Poisson solver…
Uncertainty amplification due to density/refractive-index gradients in volumetric PTV and BOS experiments
Lalit K. Rajendran, Sally P. M. Bane, Pavlos P. Vlachos
We theoretically analyze the effect of density/refractive-index gradients on the measurement precision of Volumetric Particle Tracking Velocimetry (V-PTV) and Background Oriented S…
Two Regime Cooling in Flow Induced by a Spark Discharge
Bhavini Singh, Lalit Rajendran, Pavlos P Vlachos +1
The cooling process associated with the flow induced by a spark plasma discharge generated between a pair of electrodes is measured using stereoscopic particle image velocimetry (S…
Uncertainty Quantification in density estimation from Background Oriented Schlieren (BOS) measurements
Lalit K. Rajendran, Jiacheng Zhang, Sayantan Bhattacharya +2
We present an uncertainty quantification methodology for density estimation from Background Oriented Schlieren (BOS) measurements, in order to provide local, instantaneous, a-poste…
Dot-Tracking Methodology for Background Oriented Schlieren (BOS)
Lalit K. Rajendran, Sally P. M. Bane, Pavlos P. Vlachos
We propose a dot-tracking methodology for processing Background Oriented Schlieren (BOS) images. The method significantly improves the accuracy, precision and spatial resolution co…
PIV/BOS Synthetic Image Generation in Variable Density Environments for Error Analysis and Experiment Design
Lalit K. Rajendran, Sally P. M. Bane, Pavlos P. Vlachos
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 (B…