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Title: :  Structure of a flow over a rotating disk
PaperId: :  11220
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 6 Issue 1 2020
DUI:    16.0415/IJARIIE-11220
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
Mbolahasina S. RALIJAONAAtmosphere, Climate and Oceans Dynamics Laboratory (DyACO), Physics and Applications, Sciences and Technologies Domain, Univesity of Antananarivo
Sahoby LALAOHARISOAAtmosphere, Climate and Oceans Dynamics Laboratory (DyACO), Physics and Applications, Sciences and Technologies Domain, Univesity of Antananarivo
Tsilavo M. RAZAFINDRAZAKAInstitut Supérieur de Technologie d'Ampasapito
Adolphe A. RATIARISONAtmosphere, Climate and Oceans Dynamics Laboratory (DyACO), Physics and Applications, Sciences and Technologies Domain, Univesity of Antananarivo

Abstract

Computational fluid dynamics
rotating flow, Reynolds-averaged Navier-Stokes (RANS), free surface, level set method.
The structure of a rotating flow is studied by Reynolds-averaged Navier-Stokes (RANS) numerical simulation. The fluid is contained in a cylindrical tank with fixed vertical sidewall. The flow is driven by the rotation of the bottom plate. The free surface shape is calculated by the level set method, and this study is restricted to the case where the free surface is plane. During simulations, the fluid taken into account is water. The Reynolds number and the aspect ratio of the flow are the varying parameters. The values of The Reynolds number used in the simulations are , , and , for the aspect ratio, they are 0.66, 1 and 1.33. Velocity fields variations are represented along three different radial line segments. One at the bottom of the cylinder, one at the half of the initial fluid height, and the last at the free surface. The velocity magnitude increases with time and when Reynolds number grows. Radial and azimuthal velocity components decrease with growing aspect ratio, and vertical velocity keeps the same scale. For every value of the parameters, the motion direction is described as followed: at the rotating bottom, the fluid goes from the center to the sidewall, near which it is upward. At the free surface and at half of its height, the fluid is tending to move toward the center. And at a certain distance from the fixed sidewall, the fluid motion is downward. This flow structure is consistent with the structure found in experimental studies reported in Bergmann et al and Jansson.

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IJARIIE Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. "Structure of a flow over a rotating disk" International Journal Of Advance Research And Innovative Ideas In Education Volume 6 Issue 1 2020 Page 958-969
MLA Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. "Structure of a flow over a rotating disk." International Journal Of Advance Research And Innovative Ideas In Education 6.1(2020) : 958-969.
APA Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, & Adolphe A. RATIARISON. (2020). Structure of a flow over a rotating disk. International Journal Of Advance Research And Innovative Ideas In Education, 6(1), 958-969.
Chicago Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. "Structure of a flow over a rotating disk." International Journal Of Advance Research And Innovative Ideas In Education 6, no. 1 (2020) : 958-969.
Oxford Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. 'Structure of a flow over a rotating disk', International Journal Of Advance Research And Innovative Ideas In Education, vol. 6, no. 1, 2020, p. 958-969. Available from IJARIIE, https://ijariie.com/AdminUploadPdf/Structure_of_a_flow_over_a_rotating_disk_ijariie11220.pdf (Accessed : 20 August 2020).
Harvard Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. (2020) 'Structure of a flow over a rotating disk', International Journal Of Advance Research And Innovative Ideas In Education, 6(1), pp. 958-969IJARIIE [Online]. Available at: https://ijariie.com/AdminUploadPdf/Structure_of_a_flow_over_a_rotating_disk_ijariie11220.pdf (Accessed : 20 August 2020)
IEEE Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON, "Structure of a flow over a rotating disk," International Journal Of Advance Research And Innovative Ideas In Education, vol. 6, no. 1, pp. 958-969, Jan-Feb 2020. [Online]. Available: https://ijariie.com/AdminUploadPdf/Structure_of_a_flow_over_a_rotating_disk_ijariie11220.pdf [Accessed : 20 August 2020].
Turabian Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. "Structure of a flow over a rotating disk." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 6 number 1 (20 August 2020).
Vancouver Mbolahasina S. RALIJAONA, Sahoby LALAOHARISOA, Tsilavo M. RAZAFINDRAZAKA, and Adolphe A. RATIARISON. Structure of a flow over a rotating disk. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2020 [Cited : 20 August 2020]; 6(1) : 958-969. Available from: https://ijariie.com/AdminUploadPdf/Structure_of_a_flow_over_a_rotating_disk_ijariie11220.pdf
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