Search Results - "Experiments in fluids"

Shake-The-Box: Lagrangian particle tracking at high particle image densities by Schanz, Daniel, Gesemann, Sebastian, Schröder, Andreas

“…A Lagrangian tracking method is introduced, which uses a prediction of the particle distribution for the subsequent time-step as a mean to seize the temporal…”
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From drop impact physics to spray cooling models: a critical review by Breitenbach, Jan, Roisman, Ilia V., Tropea, Cameron

“…Spray–wall interaction is an important process encountered in a large number of existing and emerging technologies and is the underlying phenomenon associated…”
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Superhydrophobic drag reduction in laminar flows: a critical review by Lee, Choongyeop, Choi, Chang-Hwan, Kim, Chang-Jin

“…A gas in between micro- or nanostructures on a submerged superhydrophobic (SHPo) surface allows the liquid on the structures to flow with an effective slip. If…”
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Characterizing and correcting for the effect of sensor noise in the dynamic mode decomposition by Dawson, Scott T. M., Hemati, Maziar S., Williams, Matthew O., Rowley, Clarence W.

“…Dynamic mode decomposition (DMD) provides a practical means of extracting insightful dynamical information from fluids datasets. Like any data processing…”
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Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control by Benard, Nicolas, Moreau, Eric

“…The present paper is a wide review on AC surface dielectric barrier discharge (DBD) actuators applied to airflow control. Both electrical and mechanical…”
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Background-oriented schlieren (BOS) techniques by Raffel, Markus

“…This article gives an overview of the background-oriented schlieren (BOS) technique, typical applications and literature in the field. BOS is an optical…”
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Visualization of sneeze ejecta: steps of fluid fragmentation leading to respiratory droplets by Scharfman, B. E., Techet, A. H., Bush, J. W. M., Bourouiba, L.

“…Coughs and sneezes feature turbulent, multiphase flows that may contain pathogen-bearing droplets of mucosalivary fluid. As such, they can contribute to the…”
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Dense motion estimation of particle images via a convolutional neural network by Cai, Shengze, Zhou, Shichao, Xu, Chao, Gao, Qi

“…In this paper, we propose a supervised learning strategy for the fluid motion estimation problem (i.e., extracting the velocity fields from particle images)…”
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Superhydrophobic drag reduction in turbulent flows: a critical review by Park, Hyungmin, Choi, Chang-Hwan, Kim, Chang-Jin

“…Superhydrophobic (SHPo) surfaces have been investigated vigorously since around 2000 due in large part to their unique potential for hydrodynamic frictional…”
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Main results of the 4th International PIV Challenge by Kähler, Christian J., Astarita, Tommaso, Vlachos, Pavlos P., Sakakibara, Jun, Hain, Rainer, Discetti, Stefano, La Foy, Roderick, Cierpka, Christian

“…In the last decade, worldwide PIV development efforts have resulted in significant improvements in terms of accuracy, resolution, dynamic range and extension…”
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Mind the gap: a new insight into the tip leakage vortex using stereo-PIV by Dreyer, Matthieu, Decaix, Jean, Münch-Alligné, Cécile, Farhat, Mohamed

“…The tip leakage vortex (TLV), which develops in the clearance between the rotor and the stator of axial hydro turbines, has been studied for decades. Yet, many…”
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Screech-tone prediction using upstream-travelling jet modes by Mancinelli, Matteo, Jaunet, Vincent, Jordan, Peter, Towne, Aaron

“…The purpose of this paper is to characterise and model the A1 and A2 screech modes in supersonic jets operating at off-design conditions. The usual…”
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Two-phase flow regime identification based on the liquid-phase velocity information and machine learning by Zhang, Yongchao, Azman, Amirah Nabilah, Xu, Ke-Wei, Kang, Can, Kim, Hyoung-Bum

“…Two-phase flow regime identification in a horizontal pipe was realized based on the liquid phase velocity information and the machine learning method…”
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Estimating density, velocity, and pressure fields in supersonic flows using physics-informed BOS by Molnar, Joseph P., Venkatakrishnan, Lakshmi, Schmidt, Bryan E., Sipkens, Timothy A., Grauer, Samuel J.

“…We report a new workflow for background-oriented schlieren (BOS), termed “physics-informed BOS,” to extract density, velocity, and pressure fields from a pair…”
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Ultrasound Imaging Velocimetry: a review by Poelma, Christian

“…Whole-field velocity measurement techniques based on ultrasound imaging (a.k.a. ‘ultrasound imaging velocimetry’ or ‘echo-PIV’) have received significant…”
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Effects of free-stream turbulence intensity on transition in a laminar separation bubble formed over an airfoil by Istvan, Mark S., Yarusevych, Serhiy

“…The laminar-to-turbulent transition process in a laminar separation bubble formed over a NACA 0018 airfoil is investigated experimentally. All experiments are…”
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An experimental study of icing control using DBD plasma actuator by Cai, Jinsheng, Tian, Yongqiang, Meng, Xuanshi, Han, Xuzhao, Zhang, Duo, Hu, Haiyang

“…Ice accretion on aircraft or wind turbine has been widely recognized as a big safety threat in the past decades. This study aims to develop a new approach for…”
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Study of the vortex-induced pressure excitation source in a Francis turbine draft tube by particle image velocimetry by Favrel, A., Müller, A., Landry, C., Yamamoto, K., Avellan, F.

“…Francis turbines operating at part-load experience the development of a precessing cavitation vortex rope at the runner outlet, which acts as an excitation…”
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On the development and early observations from a towing tank-based transverse wing–gust encounter test rig by Corkery, S. J., Babinsky, H., Harvey, J. K.

“…Small unmanned aerial vehicles and biological fliers can experience wind gusts of similar magnitude to the flight speed, which is detrimental to flight…”
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Comparative assessment of pressure field reconstructions from particle image velocimetry measurements and Lagrangian particle tracking by van Gent, P. L., Michaelis, D., van Oudheusden, B. W., Weiss, P. -É., de Kat, R., Laskari, A., Jeon, Y. J., David, L., Schanz, D., Huhn, F., Gesemann, S., Novara, M., McPhaden, C., Neeteson, N. J., Rival, D. E., Schneiders, J. F. G., Schrijer, F. F. J.

“…A test case for pressure field reconstruction from particle image velocimetry (PIV) and Lagrangian particle tracking (LPT) has been developed by constructing a…”
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