Forward and inverse modeling of depth-of-field effects in background-oriented Schlieren

JP Molnar, EJ LaLonde, CS Combs, O Léon, D Donjat… - AIAA journal, 2024 - arc.aiaa.org
This paper reports a novel cone-ray model of background-oriented schlieren (BOS) imaging
that accounts for depth-of-field effects. Reconstructions of the density field performed with …

Adjusting single-axis acoustic levitators in real time using rainbow schlieren deflectometry

V Contreras, A Marzo - Review of Scientific Instruments, 2021 - pubs.aip.org
Acoustic levitation uses focused high-intensity airborne ultrasound to hold particles in mid-
air. It is becoming an important tool for experiments in spectrometry, lab-on-a-droplet, and …

Ultrasonic probes and echo time algorithms in ultrasonic gas flow measurement systems: Progress and perspectives

Z Wei, X Zhao, L Han, N Zhao, L Fang - Physics of Fluids, 2025 - pubs.aip.org
Ultrasonic gas flowmeters employ non-intrusive measurement techniques, characterized by
rapid responsiveness and exceptional antiinterference capabilities. These attributes not only …

Application of rainbow schlieren tomography for shock-containing rectangular jets

R Fukunaga, M Ezoe, S Nakao, Y Miyazato - Journal of Visualization, 2022 - Springer
The shock-containing jet issued from a rectangular convergent nozzle with an aspect ratio of
4.0 at the exit is captured quantitatively by the rainbow schlieren tomography. Multiple …

Studies on the quantitative analysis of an electrochemical solution via the Schlieren method

Z Guo, D Xiong, H Li, Z Tao, Y Cao - Applied Optics, 2024 - opg.optica.org
A quantitative schlieren technique has been applied to measure the change of copper
sulfate concentration in an electrochemical cell during the copper electroplating process. We …

Quantitative flow visualization of slightly underexpanded microjets by Mach–Zehnder interferometers

S Sugawara, S Nakao, Y Miyazato, Y Ishino… - Flow, Turbulence and …, 2021 - Springer
Abstract The Mach–Zehnder interferometer with the finite fringe setting is applied for a shock-
containing microjet issued from an axisymmetric convergent nozzle with an inner diameter of …

On the application of non-standard rainbow schlieren technique upon supersonic jets

R Mariani, HD Lim, B Zang, US Vevek, TH New… - Journal of …, 2020 - Springer
A quantitative rainbow schlieren study was conducted on an over-expanded jet at nozzle
pressure ratio of 2.8, based on two different schlieren set-ups: the standard z-type and a …

Effects of Surface Roughness on Shock-Wave/Boundary-Layer Interactions at Mach 7.2

ENA Hoffman - 2023 - search.proquest.com
This research work studies the effects of surface roughness on shock-wave/boundary-layer
interactions (SWBLIs). SWBLI are prevalent in supersonic and hypersonic flows and occur …

[HTML][HTML] Density estimation of an ultrahigh-speed rarefied flow field based on force analysis of a pendulum sphere

N Han, JW Cao, X Meng, HL Liu, SH Zhang, HJ Huang - Vacuum, 2023 - Elsevier
The similarity criterion for high speed or high enthalpy rarefied reaction flows is the binary
scaling law, one of which is the product of the incoming flow density and the characteristic …

Characterization of Supersonic Jet and Shock Wave with High-Resolution Quantitative Schlieren Imaging

YK Liu, CE Lin, J Nam, P Chen - arXiv preprint arXiv:2411.14069, 2024 - arxiv.org
This paper presents an enhanced optical configuration for a single-pass quantitative
Schlieren imaging system that achieves an optical resolution of approximately 4.6 …