Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer

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.

Grzelak j.; Wiercinski z.

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:2017 | Volume:10 | Issue:2 Page(s): 713-724

Download Full-Text

View:

193

Download:

119

Cites:

Information Journal Paper

Title

Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer

Author(s)

Grzelak j. | Wiercinski z. | Issue Writer Certificate

Keywords

Turbulence scale

Turbulence intensity

Boundary layer

Transition

Grid

Isotropic turbulence

Abstract

An experimental investigation was carried out to study the turbulent flow over a flat plate in a subsonic wind tunnel. The enhanced level of turbulence was generated by five wicker grids with square meshes, and different parameters (diameter of the grid rod d = 0. 3 to 3 mm and the grid mesh size M = 1 to 30 mm). The velocity of the flow was measured by means of a 1D hot-wire probe, suitable for measurements in a boundary layer. The main aim of the investigation was to explore the influence of the free stream turbulence length scale on the onset of laminar-turbulent bypass transition in a boundary layer on a flat plate. For this purpose, several transition correlations were presented, including intensity and length scales of turbulence, both at the leading edge of a plate and at the onset of transition. The paper ends with an attempt to create a correlation, which takes into account a simultaneous impact of turbulence intensity and turbulence scale on the boundary layer transition. To assess the isotropy of turbulence, the skewness factor of the flow velocity distribution was determined. Also several longitudinal scales of turbulence were determined and compared (integral scale, dissipation scale, Taylor microscale and Kolmogorov scale) for different grids and different velocities of the mean flow U = 4, 6, 10, 15, 20 m/s.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

Grzelak, j., & Wiercinski, z.. (2017). Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer. JOURNAL OF APPLIED FLUID MECHANICS (JAFM), 10(2), 713-724. SID. https://sid.ir/paper/308227/en

Vancouver: Copy

Grzelak j., Wiercinski z.. Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer. JOURNAL OF APPLIED FLUID MECHANICS (JAFM)[Internet]. 2017;10(2):713-724. Available from: https://sid.ir/paper/308227/en

IEEE: Copy

j. Grzelak, and z. Wiercinski, “Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer,” JOURNAL OF APPLIED FLUID MECHANICS (JAFM), vol. 10, no. 2, pp. 713–724, 2017, [Online]. Available: https://sid.ir/paper/308227/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops