Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers

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PRIBOŠEK, Jaka ;BOBIČ, Miha ;GOLOBIČ, Iztok ;DIACI, Janez .
Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 62, n.1, p. 3-10, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/>. Date accessed: 29 sep. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2015.3125.
Pribošek, J., Bobič, M., Golobič, I., & Diaci, J.
(2016).
Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers.
Strojniški vestnik - Journal of Mechanical Engineering, 62(1), 3-10.
doi:http://dx.doi.org/10.5545/sv-jme.2015.3125
@article{sv-jmesv-jme.2015.3125,
	author = {Jaka  Pribošek and Miha  Bobič and Iztok  Golobič and Janez  Diaci},
	title = {Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {1},
	year = {2016},
	keywords = {optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry},
	abstract = {To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.},
	issn = {0039-2480},	pages = {3-10},	doi = {10.5545/sv-jme.2015.3125},
	url = {https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/}
}
Pribošek, J.,Bobič, M.,Golobič, I.,Diaci, J.
2016 June 62. Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 62:1
%A Pribošek, Jaka 
%A Bobič, Miha 
%A Golobič, Iztok 
%A Diaci, Janez 
%D 2016
%T Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers
%B 2016
%9 optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry
%! Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers
%K optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry
%X To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.
%U https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/
%0 Journal Article
%R 10.5545/sv-jme.2015.3125
%& 3
%P 8
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 62
%N 1
%@ 0039-2480
%8 2018-06-27
%7 2018-06-27
Pribošek, Jaka, Miha  Bobič, Iztok  Golobič, & Janez  Diaci.
"Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers." Strojniški vestnik - Journal of Mechanical Engineering [Online], 62.1 (2016): 3-10. Web.  29 Sep. 2021
TY  - JOUR
AU  - Pribošek, Jaka 
AU  - Bobič, Miha 
AU  - Golobič, Iztok 
AU  - Diaci, Janez 
PY  - 2016
TI  - Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2015.3125
KW  - optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry
N2  - To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.
UR  - https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/
@article{{sv-jme}{sv-jme.2015.3125},
	author = {Pribošek, J., Bobič, M., Golobič, I., Diaci, J.},
	title = {Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {62},
	number = {1},
	year = {2016},
	doi = {10.5545/sv-jme.2015.3125},
	url = {https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/}
}
TY  - JOUR
AU  - Pribošek, Jaka 
AU  - Bobič, Miha 
AU  - Golobič, Iztok 
AU  - Diaci, Janez 
PY  - 2018/06/27
TI  - Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 62, No 1 (2016): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2015.3125
KW  - optical distortion, corrugated-plate heat exchanger, particle-tracking velocimetry
N2  - To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.
UR  - https://www.sv-jme.eu/sl/article/correcting-the-periodic-optical-distortion-for-particle-tracking-velocimetry-in-corrugated-plate-heat-exchangers/
Pribošek, Jaka, Bobič, Miha, Golobič, Iztok, AND Diaci, Janez.
"Correcting the Periodic Optical Distortion for Particle-Tracking Velocimetry in Corrugated-Plate Heat Exchangers" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 62 Number 1 (27 June 2018)

Avtorji

Inštitucije

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 1
  • Danfoss Trata d.o.o., 1210 Ljubljana, Slovenia 2

Informacije o papirju

Strojniški vestnik - Journal of Mechanical Engineering 62(2016)1, 3-10

https://doi.org/10.5545/sv-jme.2015.3125

To improve current methods for the experimental validation of numerical simulations in corrugated-plate heat exchangers (CPHEs), a full-field quantitative velocimetry of fluid flow is required. This paper investigates the application of particle-tracking velocimetry (PTV) to modified CPHEs. For this, an experimental CPHE unit with a transparent, corrugated upper plate was built. We show that by viewing through a corrugated, refractive interface, a complex periodic optical distortion is introduced, that affects and corrupts the estimated particle trajectories. As this problem cannot be addressed using existing calibration techniques, we propose a novel calibration algorithm for periodic optical distortion. The algorithm relies on the automatic detection of nonlinear distortion using a checkerboard target place within the CPHE unit. The calibration is first made on a coarse grid and subsequently refined by a set of low-order periodic basis functions in order to seize the periodic nature of the deformation field. The proposed algorithms have been applied to a test case with known, uniform particle velocities in order to demonstrate the performance. When applied to a real case, a reduction in the systematic positional error by 35 % was demonstrated.

optical distortion; corrugated-plate heat exchanger; particle-tracking velocimetry