Results 41 to 50 of about 11,468,149 (219)

Uncertainty assessment for a towed underwater stereo PIV system by uniform flow measurement

International Journal of Naval Architecture and Ocean Engineering, 2018
The present study aims to assess test uncertainty assessment method of nominal wake field measurement by a Stereoscopic Particle Image Velocimetry (SPIV) system in a towing tank.
Bum Woo Han, Jeonghwa Seo, Seung Jae Lee, Dong Myung Seol, Shin Hyung Rhee   +4 more
doaj   +1 more source

Feasibility of Optical Flow Field Measurements of the Coolant in a Grinding Machine

Applied Sciences, 2021
For industrial grinding processes, the workpiece cooling by metalworking fluids, which strongly influences the workpiece surface layer quality, is not yet fully understood.
Björn Espenhahn, Lukas Schumski, Christoph Vanselow, Dirk Stöbener, Daniel Meyer, Andreas Fischer   +5 more
doaj   +1 more source

Image processing technique for hydraulic application

Труды Института системного программирования РАН, 2018
In this paper, we present techniques Surface Flow Image Velocimetry (SFIV) that is a practical extension of Particle Image Velocimetry method (PIV). In particular, this technique is to evaluate the behavior on the surface flow for complex flow.
J. Tellez-Alvarez, M. Gomez, B. Russo
doaj   +1 more source

Stability estimate for scalar image velocimetry

Journal of Inverse and Ill-posed Problems, 2023
Abstract In this paper, we analyze the stability of the system of partial differential equations modelling scalar image velocimetry. We first revisit a successful numerical technique to reconstruct velocity vectors u
Erik Burman, Jurriaan J. J. Gillissen, Lauri Oksanen   +2 more
openaire   +4 more sources

Particle image velocimetry with optical flow [PDF]

Experiments in Fluids, 1998
An optical Flow technique based on the use of Dynamic Programming has been applied to Particle Image Velocimetry thus yielding a significant increase in the accuracy and spatial resolution of the velocity field. Results are presented for calibrated synthetic sequences of images and for sequences of real images taken for a thermally driven flow of water
Quénot, Georges, Pakleza, Jaroslaw, Kowalewski, Tomasz   +2 more
openaire   +2 more sources

Controlling Polystyrene Particle Distribution in Colloidal Lithography For Correlated‐Disorder Structures

Advanced Optical Materials, EarlyView.
Colloidal lithography is a low‐cost, simple and scalable technique to fabricate correlated‐disorder nanostructures for light‐trapping in solar cells. This work investigates the control of polystyrene particle distribution in colloidal lithography, highlighting the importance of particle surface functionalization as well as the ability to tune the ...
Laura de Almeida, Jean‐Baptiste Doucet, Mathieu Arribat, Guilhem Almuneau, Stéphane Collin, Inès Revol   +5 more
wiley   +1 more source

Particle Imaging Velocimetry with Color-Encoded Illumination: A Review

Sensors
High-resolution and three-dimensional measurements at large scales represent a crucial frontier in flow diagnostics. Color-encoded illumination particle imaging velocimetry has emerged as a promising non-contact volumetric measurement technique in recent
Yizhu Wang, Xiaoming He, Yuan Tian, Chang Liu, Depeng Wang   +4 more
doaj   +1 more source

Developing Soft Interconnected Microchannel Network for 2D Skin‐Like Actuator

Advanced Science, EarlyView.
A soft interconnected network of microchannels is proposed to develop new pneumatic actuators for future bio‐inspired soft robots. Simultaneous stimulation of this network generates regional asymmetric strains in walls of microchannels whose interaction across the entire surface leads to bending curvatures in multidimensions.
John Noee, Mohammad Akbari, Josephine Perto Justsen, Ulrich Doll, Rassoul Tabassian   +4 more
wiley   +1 more source

Amphibious Movement of Microrobots Inspired by Water Spiders

Advanced Science, EarlyView.
Inspired by the water strider, a novel microrobot is designed to maintain amphibious mobility in complex environments. It retains the ability to traverse the air‐liquid interface and perform directional movement within sophisticated, multifaceted environments, including complex gastric wall structures, with precise controllability.
Xiao Hu, Run Ouyang, Zhuhao Shi, Wanqiong Tao, Zuchao Zhu, Peifeng Lin, Jianzhong Lin, Luca Brandt   +7 more
wiley   +1 more source

Objective speckle velocimetry for autonomous vehicle odometry [PDF]

, 2012
Speckle velocimetry is investigated as a means of determining odometry data with potential for application on autonomous robotic vehicles. The technique described here relies on the integration of translation measurements made by normalized cross ...
Charrett, Thomas O. H., Tatam, Ralph P., Waugh, L., Francis, Daniel   +3 more
core   +1 more source