Numerical study of 3D nonlinear disturbance growth in transitional natural convection

Tilek Aberra; Steven W. Armfield; Masud Behnia; Shigenao Maruyama; Atsuki Komiya

doi:10.1115/IHTC14-23300

Numerical study of 3D nonlinear disturbance growth in transitional natural convection

Tilek Aberra, Steven W. Armfield^*, Masud Behnia, Shigenao Maruyama, Atsuki Komiya

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

5 Citations (Scopus)

Abstract

Three dimensional boundary layer disturbance growth in natural convection adjacent to a uniformly heated vertical plate has been studied using a finite volume direct numerical simulation (DNS). The sequence of events associated with the intermediate stage of the spatial laminar-turbulent-transition for water, with Prandtl number Pr = 6.7, for the Rayleigh numbers in the range Ra _x ≈ 1 × 10 - 4 × 10¹³, with perturbation parameters closely matching the experiment reported in [1], is investigated. Preliminary calculations confirm that this stage is characterized by the development of spatially periodic inner and outer span-wise vortices (shear layers), which travel in a differing fashion and speed; and a secondary mean flow system. The important route to natural convection flow breakdown, the arising of a double vortex mean longitudinal system, repeatedly suggested by past experiments, seems to be related to the complex and opposing behavior of these two layers.

Original language	English
Title of host publication	2010 14th International Heat Transfer Conference, IHTC 14
Editors	David Walsh
Place of Publication	New York, NY
Publisher	American Society of Mechanical Engineers (ASME)
Pages	173-181
Number of pages	9
Volume	7
ISBN (Electronic)	9780791838792
ISBN (Print)	9780791849422
DOIs	https://doi.org/10.1115/IHTC14-23300
Publication status	Published - Aug 2010
Externally published	Yes
Event	2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC, United States Duration: 8 Aug 2010 → 13 Aug 2010

Other

Other	2010 14th International Heat Transfer Conference, IHTC 14
Country/Territory	United States
City	Washington, DC
Period	8/08/10 → 13/08/10

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10.1115/IHTC14-23300

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title = "Numerical study of 3D nonlinear disturbance growth in transitional natural convection",

abstract = "Three dimensional boundary layer disturbance growth in natural convection adjacent to a uniformly heated vertical plate has been studied using a finite volume direct numerical simulation (DNS). The sequence of events associated with the intermediate stage of the spatial laminar-turbulent-transition for water, with Prandtl number Pr = 6.7, for the Rayleigh numbers in the range Ra x ≈ 1 × 10 - 4 × 1013, with perturbation parameters closely matching the experiment reported in [1], is investigated. Preliminary calculations confirm that this stage is characterized by the development of spatially periodic inner and outer span-wise vortices (shear layers), which travel in a differing fashion and speed; and a secondary mean flow system. The important route to natural convection flow breakdown, the arising of a double vortex mean longitudinal system, repeatedly suggested by past experiments, seems to be related to the complex and opposing behavior of these two layers.",

author = "Tilek Aberra and Armfield, {Steven W.} and Masud Behnia and Shigenao Maruyama and Atsuki Komiya",

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pages = "173--181",

editor = "David Walsh",

booktitle = "2010 14th International Heat Transfer Conference, IHTC 14",

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note = "2010 14th International Heat Transfer Conference, IHTC 14 ; Conference date: 08-08-2010 Through 13-08-2010",

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Aberra, T, Armfield, SW, Behnia, M, Maruyama, S & Komiya, A 2010, Numerical study of 3D nonlinear disturbance growth in transitional natural convection. in D Walsh (ed.), 2010 14th International Heat Transfer Conference, IHTC 14. vol. 7, 23300, American Society of Mechanical Engineers (ASME), New York, NY, pp. 173-181, 2010 14th International Heat Transfer Conference, IHTC 14, Washington, DC, United States, 8/08/10. https://doi.org/10.1115/IHTC14-23300

Numerical study of 3D nonlinear disturbance growth in transitional natural convection. / Aberra, Tilek; Armfield, Steven W.; Behnia, Masud; Maruyama, Shigenao; Komiya, Atsuki.

2010 14th International Heat Transfer Conference, IHTC 14. ed. / David Walsh. Vol. 7 New York, NY : American Society of Mechanical Engineers (ASME), 2010. p. 173-181 23300.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Numerical study of 3D nonlinear disturbance growth in transitional natural convection

AU - Aberra, Tilek

AU - Armfield, Steven W.

AU - Behnia, Masud

AU - Maruyama, Shigenao

AU - Komiya, Atsuki

PY - 2010/8

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N2 - Three dimensional boundary layer disturbance growth in natural convection adjacent to a uniformly heated vertical plate has been studied using a finite volume direct numerical simulation (DNS). The sequence of events associated with the intermediate stage of the spatial laminar-turbulent-transition for water, with Prandtl number Pr = 6.7, for the Rayleigh numbers in the range Ra x ≈ 1 × 10 - 4 × 1013, with perturbation parameters closely matching the experiment reported in [1], is investigated. Preliminary calculations confirm that this stage is characterized by the development of spatially periodic inner and outer span-wise vortices (shear layers), which travel in a differing fashion and speed; and a secondary mean flow system. The important route to natural convection flow breakdown, the arising of a double vortex mean longitudinal system, repeatedly suggested by past experiments, seems to be related to the complex and opposing behavior of these two layers.

AB - Three dimensional boundary layer disturbance growth in natural convection adjacent to a uniformly heated vertical plate has been studied using a finite volume direct numerical simulation (DNS). The sequence of events associated with the intermediate stage of the spatial laminar-turbulent-transition for water, with Prandtl number Pr = 6.7, for the Rayleigh numbers in the range Ra x ≈ 1 × 10 - 4 × 1013, with perturbation parameters closely matching the experiment reported in [1], is investigated. Preliminary calculations confirm that this stage is characterized by the development of spatially periodic inner and outer span-wise vortices (shear layers), which travel in a differing fashion and speed; and a secondary mean flow system. The important route to natural convection flow breakdown, the arising of a double vortex mean longitudinal system, repeatedly suggested by past experiments, seems to be related to the complex and opposing behavior of these two layers.

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T2 - 2010 14th International Heat Transfer Conference, IHTC 14

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ER -

Numerical study of 3D nonlinear disturbance growth in transitional natural convection

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