Large-Eddy Simulation of a Laminar Separation Bubble

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

SINGH N.K.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED FLUID MECHANICS (JAFM) Year:2019 | Volume:12 | Issue:3 Page(s): 777-788

Download Full-Text

View:

229

Download:

114

Cites:

Information Journal Paper

Title

Large-Eddy Simulation of a Laminar Separation Bubble

Author(s)

SINGH N.K. | Issue Writer Certificate

Keywords

Separation bubble

Large-eddy simulation

Smagorinsky model

Dynamic model

Abstract

Large-eddy simulation of a laminar Separation bubble on a flat plate has been performed and compared with the data in the literature. Suitability of different subgrid-scale models has been examined for simulation of transition. Comparison of various parameters and three-dimensional visualization of instantaneous flow fields indicate that standard Smagorinsky model, being too dissipative, is not suitable for this kind of problem and fails to properly resolve transition. With the application of low Reynolds number correction and a reduced model constant, a good agreement with the Dynamic model is obtained at a lower computational cost. Of the three SGS models investigated, Dynamic model gives the most physically accurate description of transition. The simulations illustrate that the appearance of Λ-vortices, vortex stretching and break down of longitudinal streaks characterize the transition process. Low values of reverse flow make it clear that a convective instability is involved. It is concluded that the initial amplification of disturbances is due to Tollmien-Schlichting mechanism while the roll-up of the shear layer takes place due to Kelvin-Helmholtz instability. It is observed that the universal log-law profile is not reached by the velocity profiles even far downstream.

Cites

No record.

References

No record.

Cite

APA: Copy

SINGH, N.K.. (2019). Large-Eddy Simulation of a Laminar Separation Bubble. JOURNAL OF APPLIED FLUID MECHANICS (JAFM), 12(3), 777-788. SID. https://sid.ir/paper/307935/en

Vancouver: Copy

SINGH N.K.. Large-Eddy Simulation of a Laminar Separation Bubble. JOURNAL OF APPLIED FLUID MECHANICS (JAFM)[Internet]. 2019;12(3):777-788. Available from: https://sid.ir/paper/307935/en

IEEE: Copy

N.K. SINGH, “Large-Eddy Simulation of a Laminar Separation Bubble,” JOURNAL OF APPLIED FLUID MECHANICS (JAFM), vol. 12, no. 3, pp. 777–788, 2019, [Online]. Available: https://sid.ir/paper/307935/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops