Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

FSVPy: A python-based package for fluorescent streak velocimetry (FSV)

Journal Article · · Journal of Rheology
DOI:https://doi.org/10.1122/8.0000521· OSTI ID:2422042

Predictive constitutive equations that connect easy-to-measure transport properties (e.g., viscosity and conductivity) with system performance variables (e.g., power consumption and efficiency) are needed to design advanced thermal and electrical systems. In this work, we explore the use of fluorescent particle-streak analysis to directly measure the local velocity field of a pressure-driven flow, introducing a new Python package (FSVPy) to perform the analysis. Fluorescent streak velocimetry combines high-speed imaging with highly fluorescent particles to produce images that contain fluorescent streaks, whose length and intensity can be related to the local flow velocity. By capturing images throughout the sample volume, the three-dimensional velocity field can be quantified and reconstructed. We demonstrate this technique by characterizing the channel flow profiles of several non-Newtonian fluids: micellar Cetylpyridinium Chloride solution, Carbopol 940, and Polyethylene Glycol. We then explore more complex flows, where significant acceleration is created due to microscale features encountered within the flow. We demonstrate the ability of FSVPy to process streaks of various shapes and use the variable intensity along the streak to extract position-specific velocity measurements from individual images. Thus, we demonstrate that FSVPy is a flexible tool that can be used to extract local velocimetry measurements from a wide variety of fluids and flow conditions.

Research Organization:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0022119
OSTI ID:
2422042
Journal Information:
Journal of Rheology, Journal Name: Journal of Rheology Journal Issue: 1 Vol. 67; ISSN 0148-6055
Publisher:
Society of Rheology
Country of Publication:
United States
Language:
English

References (32)

Three-dimensional particle-tracking velocimetry based on photogrammetric determination of particle coordinates conference December 1993
Full-field bubbly flow velocity measurements using a multiframe particle tracking technique journal December 1991
Bichromatic particle streak velocimetry bPSV journal September 2012
Particle streak velocity field measurements in a two-dimensional mixing layer journal January 1981
Linear and non-linear rheological behaviour of salt-free aqueous CTAB solutions journal November 1995
Measurements of the pore-scale water flow through snow using Fluorescent Particle Tracking Velocimetry journal November 2013
Improvements in laser flare removal for particle image velocimetry using fluorescent dye-doped particles journal October 2015
Adaptable pulsatile flow generated from stem cell-derived cardiomyocytes using quantitative imaging-based signal transduction journal January 2020
Kinetics and mechanism of shear banding in an entangled micellar solution journal September 2005
Fundamentals of multiframe particle image velocimetry (PIV) journal February 2007
A particle image velocimetry system for microfluidics journal September 1998
Particle streak velocimetry and CH laser-induced fluorescence diagnostics in strained, premixed, methane–air flames journal January 2005
Application of a three-dimensional (3D) particle tracking method to microfluidic particle focusing journal January 2014
Entrance effects and high shear rate rheology of shear-banding wormlike micelle fluids in a microcapillary flow journal May 2020
Particle tracking velocimetry in three-dimensional flows: Part 1. Photogrammetric determination of particle coordinates journal July 1993
Velocity measurement in microchannels with a laser confocal microscope and particle linear image velocimetry journal December 2004
Nonlocal Effects in Flows of Wormlike Micellar Solutions journal January 2008
Rheology of complex fluids by particle image velocimetry in microchannels journal July 2006
Rheo-Optical Study of Worm-like Micelles Undergoing a Shear Banding Flow journal October 1995
A Method for Validating Two-Dimensional Flow Configurations in Particle Streak Velocimetry journal February 2000
Facile Synthesis of Rhodamine B-Doped Poly(3-mercaptopropylsilsesquioxane) Fluorescent Microspheres with Controllable Size journal April 2013
Rheo-NMR and velocity imaging journal April 2006
Marching cubes: A high resolution 3D surface construction algorithm journal August 1987
High-resolution velocimetry technique based on the decaying streaks of phosphor particles journal January 2021
Particle streak velocimetry-optical coherence tomography: a novel method for multidimensional imaging of microscale fluid flows journal March 2016
Ultrasound Imaging Velocimetry: a review journal December 2016
Flow birefringence experiments showing a shear-banding structure in a CTAB solution journal April 1995
Particle image velocimetry - Classical operating rules from today’s perspective journal December 2020
High-performance color sequence particle streak velocimetry for 3D airflow measurement journal February 2018
On the uncertainty of digital PIV and PTV near walls journal May 2012
Evaluation of particle migration models based on laser Doppler velocimetry measurements in concentrated suspensions journal March 2004
Analysis of flow and slip behavior of microgel solution inside microchannel journal December 2021

Similar Records

FSVPy: A python-based package for fluorescent streak velocimetry (FSV)
Journal Article · 2022 · Journal of Rheology · OSTI ID:1898451

Fluorescent particle image velocimetry: Application to flow measurement in refractive index-matched porous media
Journal Article · 1991 · Applied Optics; (United States) · OSTI ID:5471723

Full-field particle velocimetry with a photorefractive optical novelty filter
Journal Article · 2008 · Applied Physics Letters · OSTI ID:21123958

Related Subjects