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On the excitation of instability waves in plane Poiseuille flow by a concentrated source at the wall
Other Title(s)
إثارة الأمواج غير المتوازنة في سريان بويزيل المستوى بواسطة مصدر مركز على الجدار
Author
Source
Sultan Qaboos University Journal for Scientific Research-Science and Technology
Issue
Vol. 1999, Issue 4 (31 Dec. 1999), pp.85-97, 13 p.
Publisher
Sultan Qaboos University College of Science
Publication Date
1999-12-31
Country of Publication
Oman
No. of Pages
13
Main Subjects
Abstract EN
The paper addresses the excitation of instability waves in plane Poiseuille flow by means of a concentrated source at the wall.
The aim of this paper is to investigate the relation between the source amplitude and the excited wave amplitude for various flow and source parameters .The source is modeled by a time harmonic Dnae function and the generated disturbance is investigated By applying Founrier transform on the resulting linearized Navier-Stokes equation in the streamwise direction, the problem is resolved using inverse Fourier transform and the residue theorem.
The theoretical formulation explains some observations by previous experiments on similar cases of excitation.
Moreover, the calculations demonstrate that the disturbance amplitude increases as the excitation frequency decreases for a fixed Reynolds number, while, on the other hand, it increases as Reynolds number decreases for a fixed frequency.
generated disturbance is investigated.
By applying Fourier transform on the resulting linearized Si\ ler-Siokes equation in the jtreamwise direction, the problem is resolved using inverse Founcr transform and the residue theorem The thcoreacal formulation explains some observations by previous experiments on similar cases of excitations.
Moreover, the calculations demonstrate thai ihc disturbance amplitude increases as the excitation frequency decreases for a fixed Reynolds number, while, on the other hand, it increases as Reynolds number decreases for a fixed frequency
American Psychological Association (APA)
al-Maayitah, Ayman. 1999. On the excitation of instability waves in plane Poiseuille flow by a concentrated source at the wall. Sultan Qaboos University Journal for Scientific Research-Science and Technology،Vol. 1999, no. 4, pp.85-97.
https://search.emarefa.net/detail/BIM-213420
Modern Language Association (MLA)
al-Maayitah, Ayman. On the excitation of instability waves in plane Poiseuille flow by a concentrated source at the wall. Sultan Qaboos University Journal for Scientific Research-Science and Technology No.4 (December 1999), pp.85-97.
https://search.emarefa.net/detail/BIM-213420
American Medical Association (AMA)
al-Maayitah, Ayman. On the excitation of instability waves in plane Poiseuille flow by a concentrated source at the wall. Sultan Qaboos University Journal for Scientific Research-Science and Technology. 1999. Vol. 1999, no. 4, pp.85-97.
https://search.emarefa.net/detail/BIM-213420
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 97
Record ID
BIM-213420