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23 Results Found

  • Article
  • Open Access
11 Citations
7,246 Views
13 Pages

9 March 2017

Laser Doppler Velocimetry (LDV) measurements, flow visualizations and unsteady Reynolds-Averaged Navier-Stokes (RANS) Computational Fluid Dynamics (CFD) simulations have been carried out to study the turbulent wake that is formed behind a semi-circul...

  • Article
  • Open Access
5 Citations
4,844 Views
19 Pages

Improvement of Rudder Cavitation Performance Using Rudder Inflow Measurements in Large Cavitation Tunnel

  • Bu-Geun Paik,
  • So-Won Jeong,
  • Young-Ha Park,
  • Jong-Woo Ahn,
  • Ilryong Park and
  • Jein Kim

15 February 2022

One of the important things in a ship’s rudder design is the incidence angle of the rudder inflow to improve rudder cavitation performance. In the present study, the rudder inflow is measured by a 3-D LDV (laser Doppler velocimetry) system in a...

  • Article
  • Open Access
1 Citations
4,038 Views
20 Pages

10 May 2020

In Taiwan, the rivers not only are fast-flowing with high discharge, but they badly erode their beds during the typhoon seasons. In addition, erosion on the concave bank in a meandering channel is the primary cause of levee break. Therefore, the stud...

  • Communication
  • Open Access
2 Citations
2,343 Views
10 Pages

Laser Velocimetry for the In Situ Sensing of Deep-Sea Hydrothermal Flow Velocity

  • Jingjing Sun,
  • Lei Zhang,
  • Guojie Tu,
  • Shenglai Zhen,
  • Zhigang Cao,
  • Guosheng Zhang and
  • Benli Yu

12 October 2023

Laser Doppler velocimetry (LDV) based on a differential laser Doppler system has been widely used in fluid mechanics to measure particle velocity. However, the two outgoing lights must intersect strictly at the measurement position. In cross-interfac...

  • Article
  • Open Access
8 Citations
4,098 Views
14 Pages

Photogrammetry for Free Surface Flow Velocity Measurement: From Laboratory to Field Measurements

  • Hang Trieu,
  • Per Bergström,
  • Mikael Sjödahl,
  • J. Gunnar I. Hellström,
  • Patrik Andreasson and
  • Henrik Lycksam

17 June 2021

This study describes a multi-camera photogrammetric approach to measure the 3D velocity of free surface flow. The properties of the camera system and particle tracking velocimetry (PTV) algorithm were first investigated in a measurement of a laborato...

  • Article
  • Open Access
1 Citations
1,731 Views
16 Pages

Deposition of Human-Serum-Albumin-Functionalized Spheroidal Particles on Abiotic Surfaces: Reference Kinetic Results for Bioparticles

  • Małgorzata Nattich-Rak,
  • Marta Sadowska,
  • Zbigniew Adamczyk,
  • Teresa Basinska,
  • Damian Mickiewicz and
  • Mariusz Gadzinowski

20 July 2024

Human serum albumin (HSA) corona formation on polymer microparticles of a spheroidal shape was studied using dynamic light scattering and Laser Doppler Velocimetry (LDV). Physicochemical characteristics of the albumin comprising the zeta potential an...

  • Article
  • Open Access
1 Citations
1,536 Views
13 Pages

Mechanism of Anti-Salmonella Rabbit Immunoglobulin Adsorption on Polymer Particles

  • Paulina Żeliszewska,
  • Monika Wasilewska,
  • Jolanta Szych and
  • Zbigniew Adamczyk

15 September 2023

The adsorption of anti-Salmonella rabbit immunoglobulin (IgaR) on negatively charged polymer particles leading to the formation of immunolatex was studied using various techniques comprising atomic force microscopy (AFM) and laser Doppler velocimetry...

  • Article
  • Open Access
24 Citations
3,829 Views
22 Pages

Experimental and Numerical Simulation Study on the Flow Characteristics of the Draft Tube in Francis Turbine

  • Lei Ji,
  • Lianchen Xu,
  • Yuanjie Peng,
  • Xiaoyi Zhao,
  • Zhen Li,
  • Wen Tang,
  • Demin Liu and
  • Xiaobing Liu

25 March 2022

The flow characteristics of the draft tube of a Francis turbine have a significant influence on turbine stability. Numerical simulations were performed for a Francis turbine under three different output conditions of 20%, 100%, and 120% at the rated...

  • Article
  • Open Access
4 Citations
4,249 Views
19 Pages

20 June 2019

The recent growing attention to energy saving and environmental protection issues has brought attention to the possibility of exploiting syngas from gasification of biomass and coal for the firing of industrial plants included in the, so called, Inte...

  • Article
  • Open Access
4 Citations
4,175 Views
21 Pages

1 April 2019

Flow field in the inter-stage is of great importance to jet engine turbine performance and efficiency. Investigation of flow fields is limited by the complex geometrical structure. Traditional measurement techniques, such as hot wire, pressure probe...

  • Article
  • Open Access
2 Citations
2,360 Views
11 Pages

30 December 2022

Physicochemical properties of immunolatex, prepared by incubation of negatively charged polystyrene microparticles with polyclonal rabbit IgGs, were determined by a variety of experimental techniques. These comprised dynamic light scattering (DLS), l...

  • Article
  • Open Access
21 Citations
9,781 Views
14 Pages

A Flexible Hot-Film Sensor Array for Underwater Shear Stress and Transition Measurement

  • Baoyun Sun,
  • Pengbin Wang,
  • Jian Luo,
  • Jinjun Deng,
  • Shiqi Guo and
  • Binghe Ma

15 October 2018

A flexible hot-film sensor array for wall shear stress, flow separation, and transition measurement has been fabricated and implemented in experiments. Parylene C waterproof layer is vapor phase deposited to encapsulate the sensor. Experimental studi...

  • Article
  • Open Access
60 Citations
8,604 Views
14 Pages

Eulerian Two-Fluid Model of Alkaline Water Electrolysis for Hydrogen Production

  • Damien Le Bideau,
  • Philippe Mandin,
  • Mohamed Benbouzid,
  • Myeongsub Kim,
  • Mathieu Sellier,
  • Fabrizio Ganci and
  • Rosalinda Inguanta

2 July 2020

Hydrogen storage is a promising technology for storage of renewable energy resources. Despite its high energy density potential, the development of hydrogen storage has been impeded, mainly due to its significant cost. Although its cost is governed m...

  • Article
  • Open Access
5 Citations
2,495 Views
26 Pages

This study focuses on the numerical analysis of a challenging issue involving the regulation of the human body’s microenvironment through personalized ventilation. We intended to first concentrate on the main flow, namely, the personalized vent...

  • Article
  • Open Access
5 Citations
2,831 Views
13 Pages

Flushing Efficiency of Run-of-River Hydropower Plants: Novel Approaches Based on Physical Laboratory Experiments

  • Thomas Gold,
  • Kevin Reiterer,
  • Christoph Hauer,
  • Helmut Habersack and
  • Christine Sindelar

22 July 2023

Periodic flushing operations during moderate flood events (≤annual flood flow HQ1) are an approach to counteract problems caused by disturbed sediment continuity in rivers, which is possibly an effect of run-of-river hydropower plants (RoR-HPPs)....

  • Article
  • Open Access
7 Citations
5,348 Views
23 Pages

PIV Study on Grid-Generated Turbulence in a Free Surface Flow

  • Haoyu Yao,
  • Linlin Cao,
  • Dazhuan Wu,
  • Yangyang Gao,
  • Shijie Qin and
  • Faxin Yu

26 March 2021

To investigate the feature of turbulence developing behind the filter device in a current flow, the flow fields at intermediate downstream distance of an immersed grid in an open water channel are recorded using a two-dimensional (2D) Particle Image...

  • Article
  • Open Access
989 Views
18 Pages

Effect of Solidity on the Leakage Flow and Related Noise in Axial-Flow Fans with Rotating Shroud Operating at Fixed Performance

  • Tayyab Akhtar,
  • Edward Canepa,
  • Andrea Cattanei,
  • Matteo Dellacasagrande and
  • Alessandro Nilberto

This work presents an experimental study of the effect of blade count on the flow field and the radiated noise in a low-speed axial fan with a rotating shroud. A two-component Laser Doppler Velocimetry (LDV) system and Particle Image Velocimetry (PIV...

  • Article
  • Open Access
6 Citations
2,313 Views
22 Pages

Analysis of the Energy Loss Mechanism of Pump-Turbines with Splitter Blades under Different Characteristic Heads

  • Zhonghua Gui,
  • Zhe Xu,
  • Dongkuo Li,
  • Fei Zhang,
  • Yifeng Zhao,
  • Lianchen Xu,
  • Yuan Zheng and
  • Kan Kan

31 July 2023

The operating efficiency of high-head pump turbines is closely related to the internal hydraulic losses within the system. Conventional methods for calculating hydraulic losses based on pressure differences often lack detailed information on their di...

  • Article
  • Open Access
19 Citations
3,744 Views
35 Pages

Laboratory Models of Planetary Core-Style Convective Turbulence

  • Emily K. Hawkins,
  • Jonathan S. Cheng,
  • Jewel A. Abbate,
  • Timothy Pilegard,
  • Stephan Stellmach,
  • Keith Julien and
  • Jonathan M. Aurnou

23 March 2023

The connection between the heat transfer and characteristic flow velocities of planetary core-style convection remains poorly understood. To address this, we present novel laboratory models of rotating Rayleigh–Bénard convection in which...

  • Article
  • Open Access
5 Citations
2,561 Views
17 Pages

Innovative High-Induction Air Diffuser for Enhanced Air Mixing in Vehicles and Personalized Ventilation Applications

  • Florin Ioan Bode,
  • Titus Otniel Joldos,
  • Gabriel Mihai Sirbu,
  • Paul Danca,
  • Costin Cosoiu and
  • Ilinca Nastase

14 June 2024

Thermal comfort is very important for the well-being and safety of vehicle occupants, as discomfort can elevate stress, leading to distracted attention and slower reaction times. This creates a riskier driving environment. Addressing this, high-induc...

  • Article
  • Open Access
19 Citations
3,588 Views
19 Pages

Poly(amidoamine) Dendrimers as Nanocarriers for 5-Fluorouracil: Effectiveness of Complex Formation and Cytotoxicity Studies

  • Magdalena Szota,
  • Katarzyna Reczyńska-Kolman,
  • Elżbieta Pamuła,
  • Olga Michel,
  • Julita Kulbacka and
  • Barbara Jachimska

16 October 2021

Two generations of positively charged poly(amidoamine) dendrimers (PAMAMs) were selected for study as potential carriers for the anticancer drug 5-fluorouracil (5FU), a drug primarily used in the treatment of colorectal cancer. Analytical techniques,...

  • Article
  • Open Access
2,653 Views
21 Pages

Autonomous Navigation of Unmanned Ground Vehicles Based on Micro-Shell Resonator Gyroscope Rotary INS Aided by LDV

  • Hangbin Cao,
  • Yuxuan Wu,
  • Longkang Chang,
  • Yunlong Kong,
  • Hongfu Sun,
  • Wenqi Wu,
  • Jiangkun Sun,
  • Yongmeng Zhang,
  • Xiang Xi and
  • Tongqiao Miao

13 October 2025

Micro-Shell Resonator Gyroscopes have obvious SWaP (Size, Weight and Power) advantages and applicable accuracy for the autonomous navigation of Unmanned Ground Vehicles (UGVs), especially under GNSS-denied environments. When the Micro-Shell Resonator...

  • Article
  • Open Access
10 Citations
3,613 Views
28 Pages

Low- and High-Drag Intermittencies in Turbulent Channel Flows

  • Rishav Agrawal,
  • Henry C.-H. Ng,
  • Ethan A. Davis,
  • Jae Sung Park,
  • Michael D. Graham,
  • David J.C. Dennis and
  • Robert J. Poole

4 October 2020

Recent direct numerical simulations (DNS) and experiments in turbulent channel flow have found intermittent low- and high-drag events in Newtonian fluid flows, at Reτ=uτh/ν between 70 and 100, where uτ, h and ν are the friction velo...