Brockmann, Philipp ; Hussong, Jeanette (2021)
On the calibration of Astigmatism particle tracking velocimetry for suspensions of different volume fractions.
In: Experiments in Fluids : Experimental Methods and their Applications to Fluid Flow, 62 (1)
doi: 10.1007/s00348020031204
Article, Bibliographie
This is the latest version of this item.
Abstract
In the present study, we demonstrate for the first time how Astigmatism Particle Tracking Velocimetry (APTV) can be utilized to measure suspensions dynamics. Measurements were successfully performed in monodisperse, refractive index matched suspensions of up to a volume fraction of Φ = 19.9%. For this, a small percentage (Φ < 0.01% ) of the particles is labeled with fluorescent dye acting as tracers for the particle tracking procedure. Calibration results show, that a slight deviation of the refractive index of liquid and particles leads to a strong shape change of the calibration curve with respect to the unladen case. This effect becomes more severe along the channel height. To compensate the shape change of the calibration curves the interpolation technique developed by Brockmann et al. (Exp Fluids 61(2): 67, 2020) is adapted. Using this technique, the interpolation procedure is applied to suspensions with different volume fractions of Φ < 0.01%, Φ = 4.73%, Φ = 9.04%, Φ = 12.97%, Φ = 16.58% and Φ = 19.9%. To determine the effect of volume fraction on the performance of the method, the depth reconstruction error σz and the measurement volume depth Δz, obtained in different calibration measurements, are estimated. Here, a relative position reconstruction accuracy of σz/Δz = 0.90% and σz/Δz = 2.53% is achieved for labeled calibration particles in dilute (Ф < 0.01%)and semidilute (Φ ≈ 19.9%) suspensions, respectively. The measurement technique is validated for a laminar flow in a straight rectangular channel with a crosssectional area of 2.55 × 30 mm². Uncertainties of 1.39% and 3.34% for the inplane and 9.04% and 22.57% for the outofplane velocity with respect to the maximum streamwise velocity are achieved, at solid volume fractions of Ф < 0.01% and Φ = 19.9%, respectively.
Item Type:  Article 

Erschienen:  2021 
Creators:  Brockmann, Philipp ; Hussong, Jeanette 
Type of entry:  Bibliographie 
Title:  On the calibration of Astigmatism particle tracking velocimetry for suspensions of different volume fractions 
Language:  English 
Date:  January 2021 
Place of Publication:  Berlin ; Heidelberg 
Publisher:  Springer 
Journal or Publication Title:  Experiments in Fluids : Experimental Methods and their Applications to Fluid Flow 
Volume of the journal:  62 
Issue Number:  1 
Collation:  11 Seiten 
DOI:  10.1007/s00348020031204 
Corresponding Links:  
Abstract:  In the present study, we demonstrate for the first time how Astigmatism Particle Tracking Velocimetry (APTV) can be utilized to measure suspensions dynamics. Measurements were successfully performed in monodisperse, refractive index matched suspensions of up to a volume fraction of Φ = 19.9%. For this, a small percentage (Φ < 0.01% ) of the particles is labeled with fluorescent dye acting as tracers for the particle tracking procedure. Calibration results show, that a slight deviation of the refractive index of liquid and particles leads to a strong shape change of the calibration curve with respect to the unladen case. This effect becomes more severe along the channel height. To compensate the shape change of the calibration curves the interpolation technique developed by Brockmann et al. (Exp Fluids 61(2): 67, 2020) is adapted. Using this technique, the interpolation procedure is applied to suspensions with different volume fractions of Φ < 0.01%, Φ = 4.73%, Φ = 9.04%, Φ = 12.97%, Φ = 16.58% and Φ = 19.9%. To determine the effect of volume fraction on the performance of the method, the depth reconstruction error σz and the measurement volume depth Δz, obtained in different calibration measurements, are estimated. Here, a relative position reconstruction accuracy of σz/Δz = 0.90% and σz/Δz = 2.53% is achieved for labeled calibration particles in dilute (Ф < 0.01%)and semidilute (Φ ≈ 19.9%) suspensions, respectively. The measurement technique is validated for a laminar flow in a straight rectangular channel with a crosssectional area of 2.55 × 30 mm². Uncertainties of 1.39% and 3.34% for the inplane and 9.04% and 22.57% for the outofplane velocity with respect to the maximum streamwise velocity are achieved, at solid volume fractions of Ф < 0.01% and Φ = 19.9%, respectively. 
Uncontrolled Keywords:  Engineering Fluid Dynamics, Fluid and Aerodynamics, Engineering Thermodynamics, Heat and Mass Transfer 
Identification Number:  ArtikelID: 23 
Additional Information:  Part of a collection: Applications of Laser and Imaging Technique to Fluid Mechanics. 20th International Symposium in Lisbon 2020 
Classification DDC:  500 Science and mathematics > 530 Physics 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering 
Divisions:  16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Fluid Mechanics and Aerodynamics (SLA) 
Date Deposited:  27 Mar 2024 09:55 
Last Modified:  27 Mar 2024 09:55 
PPN:  
Export:  
Suche nach Titel in:  TUfind oder in Google 
Available Versions of this Item

On the calibration of Astigmatism particle tracking velocimetry for suspensions of different volume fractions. (deposited 26 Mar 2024 13:55)
 On the calibration of Astigmatism particle tracking velocimetry for suspensions of different volume fractions. (deposited 27 Mar 2024 09:55) [Currently Displayed]
Send an inquiry 
Options (only for editors)
Show editorial Details 