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 proceedingConference proceeding contribution

3 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 languageEnglish
Title of host publication2010 14th International Heat Transfer Conference, IHTC 14
EditorsDavid Walsh
Place of PublicationNew York, NY
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages173-181
Number of pages9
Volume7
ISBN (Electronic)9780791838792
ISBN (Print)9780791849422
DOIs
Publication statusPublished - Aug 2010
Externally publishedYes
Event2010 14th International Heat Transfer Conference, IHTC 14 - Washington, DC, United States
Duration: 8 Aug 201013 Aug 2010

Other

Other2010 14th International Heat Transfer Conference, IHTC 14
CountryUnited States
CityWashington, DC
Period8/08/1013/08/10

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  • Cite this

    Aberra, T., Armfield, S. W., 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, pp. 173-181). [23300] New York, NY: American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IHTC14-23300