Results 191 to 200 of about 45,803 (270)
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The Physics of Fluids, 2022
A schlieren motion estimation (SME) method is a physical-based schlieren image velocimetry involving both schlieren luminance characteristic equation and continuity equation.
Takahiro Ukai
semanticscholar +1 more source
A schlieren motion estimation (SME) method is a physical-based schlieren image velocimetry involving both schlieren luminance characteristic equation and continuity equation.
Takahiro Ukai
semanticscholar +1 more source
Adjusting single-axis acoustic levitators in real time using rainbow schlieren deflectometry.
Review of Scientific Instruments, 2021Acoustic 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 display technologies. Nowadays, arrays of multiple small transducers
V. Contreras, A. Marzo
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Compact, self-aligned focusing schlieren system.
Optics Letters, 2021A novel, to the best of our knowledge, compact, self-aligned focusing schlieren system is presented that eliminates the need for a separate source grid and cutoff grid.
B. Bathel, Joshua M. Weisberger
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Wavelet-Based Optical Flow Analysis for Background-Oriented Schlieren Image Processing
, 2021A wavelet-based optical flow analysis (wOFA) method for processing background-oriented schlieren (BOS) images is presented and demonstrated on synthetic and experimental data.
B. Schmidt, Mark R. Woike
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Optics Letters, 2003
A new heterodyne technique for the quantitative analysis of schlieren images is described. The technique is based on phase measurements of signals generated by a photodetector observing the variations in light intensity caused by a traveling grating of slits located at the knife-edge plane of a conventional schlieren system.
Josef, Stricker, Florence, Rosenblatt
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A new heterodyne technique for the quantitative analysis of schlieren images is described. The technique is based on phase measurements of signals generated by a photodetector observing the variations in light intensity caused by a traveling grating of slits located at the knife-edge plane of a conventional schlieren system.
Josef, Stricker, Florence, Rosenblatt
openaire +2 more sources
Fluid Dynamics Research, 2021
Flow over a flat plate with a 5% thickness ratio is investigated by schlieren visualization in compressible low-Reynolds-number conditions. The results show that flow separates at the leading-edge and laminar separation-bubble forms.
K. Kusama +4 more
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Flow over a flat plate with a 5% thickness ratio is investigated by schlieren visualization in compressible low-Reynolds-number conditions. The results show that flow separates at the leading-edge and laminar separation-bubble forms.
K. Kusama +4 more
semanticscholar +1 more source
, 2020
Due to the recent progresses in sensor and laser technologies, volumetric tomography has become a popular diagnostic for combustion studies. Background-oriented Schlieren tomography (BOST) is one promising modality of volumetric tomography due to its ...
Hecong Liu, Chongyuan Shui, Weiwei Cai
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Due to the recent progresses in sensor and laser technologies, volumetric tomography has become a popular diagnostic for combustion studies. Background-oriented Schlieren tomography (BOST) is one promising modality of volumetric tomography due to its ...
Hecong Liu, Chongyuan Shui, Weiwei Cai
semanticscholar +1 more source
Applied Optics, 1969
A 20-in (51-cm) diam schlieren system was convereted to a genrualized holographic flow visualization system. The system has been used successfully in producing the following types of visualization from a single holographic plate: three-dimensional photography, variable focus shadowgraph, variable knife-edge position schlieren, color-schlieren, and ...
J E, O'Hare, J D, Trolinger
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A 20-in (51-cm) diam schlieren system was convereted to a genrualized holographic flow visualization system. The system has been used successfully in producing the following types of visualization from a single holographic plate: three-dimensional photography, variable focus shadowgraph, variable knife-edge position schlieren, color-schlieren, and ...
J E, O'Hare, J D, Trolinger
openaire +2 more sources
Measurements of liquid surface relief with moon-glade background oriented Schlieren technique
, 2020Measurements of liquid surface topography are performed using new modification of Background Oriented Schlieren technique, which is based on the apparent distortion of a background pattern image reflected by the deformed surface.
N. Vinnichenko +3 more
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, 2020
Short-time Proper Orthogonal Decomposition (POD) is proposed as an image-based technique to study the transient jet screech characteristics of moderately under-expanded supersonic jets emanating from a circular baseline and two bevelled nozzles.
H. D. Lim +6 more
semanticscholar +1 more source
Short-time Proper Orthogonal Decomposition (POD) is proposed as an image-based technique to study the transient jet screech characteristics of moderately under-expanded supersonic jets emanating from a circular baseline and two bevelled nozzles.
H. D. Lim +6 more
semanticscholar +1 more source