Instability of MHD Flow in the Duct with Electrically Perfectly Conducting Walls

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.

DONG S.; LIU L.S.; Ye x.m.

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:5 Page(s): 1293-1304

Download Full-Text

View:

194

Download:

107

Cites:

Information Journal Paper

Title

Instability of MHD Flow in the Duct with Electrically Perfectly Conducting Walls

Author(s)

DONG S. | LIU L.S. | Ye x.m. | Issue Writer Certificate

Keywords

Nonmodal stability analysis

Optimal perturbation

Hartmann layer

Sidewall layer

Conducting walls

Abstract

The stability problem of conducting fluid flow in a square duct with perfectly Conducting walls is investigated. A homogeneous and constant static magnetic field is applied along the vertical direction of the flow. Nonmodal linear stability analysis is performed on this problem for the first time and the effect of the imposed magnetic field is also taken into account. The amplification and distribution of primary Optimal perturbations are obtained by solving iteratively the direct and adjoint governing equations with respect of perturbations. Four modes of perturbations with different symmetries in the space are investigated. Computational results show that, the MHD duct flow is stable at either small or large Hartmann number, but unstable at moderate one. The primary Optimal perturbations are in the form of streamwise vortices, which are located inside the thin Sidewall layers parallel to the magnetic field. The size of the vortices is decreased with the growing of Hartmann number Ha, meanwhile the amplification of the perturbations is reduced due to the magnetic damping effect. The Hartmann layer perpendicular to the magnetic field seems to be irrelevant to the stability of the MHD duct flow. The most unstable perturbation is in the form of Mode I, which having co-rotating vortices at opposite sidewalls and the vortices tend to enhance each other.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

DONG, S., LIU, L.S., & Ye, x.m.. (2017). Instability of MHD Flow in the Duct with Electrically Perfectly Conducting Walls. JOURNAL OF APPLIED FLUID MECHANICS (JAFM), 10(5), 1293-1304. SID. https://sid.ir/paper/308167/en

Vancouver: Copy

DONG S., LIU L.S., Ye x.m.. Instability of MHD Flow in the Duct with Electrically Perfectly Conducting Walls. JOURNAL OF APPLIED FLUID MECHANICS (JAFM)[Internet]. 2017;10(5):1293-1304. Available from: https://sid.ir/paper/308167/en

IEEE: Copy

S. DONG, L.S. LIU, and x.m. Ye, “Instability of MHD Flow in the Duct with Electrically Perfectly Conducting Walls,” JOURNAL OF APPLIED FLUID MECHANICS (JAFM), vol. 10, no. 5, pp. 1293–1304, 2017, [Online]. Available: https://sid.ir/paper/308167/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops