Unsteady Couette Flow with Transpiration in a Rotating System

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Idowu
Idowu
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A.S. Joseph K. M
A.S. Joseph K. M
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Daniel K.S
Daniel K.S
α University of Ilorin University of Ilorin

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Unsteady Couette Flow with Transpiration in a Rotating System

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Abstract

The unsteady Couette flow with transpiration of a viscous fluid in a rotating system has been considered. An exact solution of the governing equations has been obtained by using Laplace Transform Technique. Solutions for velocity distributions and the shear stresses have been obtained for small time 𝝉𝝉= 𝟎𝟎. 𝟎𝟎𝟓𝟓 as well as large time 𝝉𝝉= 𝟏𝟏𝟎𝟎. 𝟎𝟎. it is found that for small times the primary velocity profile increases with decrease in 𝑲𝑲 𝟐𝟐 with constant 𝑹𝑹𝒆𝒆 while the secondary velocity profile decreases with decrease in 𝑲𝑲 𝟐𝟐 . It is also found that for large times, the primary flow increases with increase in 𝑲𝑲 𝟐𝟐 , the secondary velocity behaves in an oscillatory manner near the moving plate and increases near the stationary plate. There exists a back flow in the region 𝟎𝟎. 𝟎𝟎 ≪ 𝝋𝝋 ≪ 𝟏𝟏. 𝟎𝟎. The shear stress due to primary flow decreases with increase in 𝑲𝑲 𝟐𝟐 . On the other hand, it increases due to secondary flow with increase in rotation parameter with constant 𝑹𝑹𝒆𝒆 for small times. It is also observed that the shear stress for large time with constant 𝑹𝑹𝒆𝒆 shows layers of separation in both primary and secondary flow due to high rotation..

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Idowu. 2013. \u201cUnsteady Couette Flow with Transpiration in a Rotating System\u201d. Global Journal of Science Frontier Research - F: Mathematics & Decision GJSFR-F Volume 13 (GJSFR Volume 13 Issue F5): .

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Issue Cover
GJSFR Volume 13 Issue F5
Pg. 15- 26
Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Version of record

v1.2

Issue date

June 12, 2013

Language
en
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The unsteady Couette flow with transpiration of a viscous fluid in a rotating system has been considered. An exact solution of the governing equations has been obtained by using Laplace Transform Technique. Solutions for velocity distributions and the shear stresses have been obtained for small time 𝝉𝝉= 𝟎𝟎. 𝟎𝟎𝟓𝟓 as well as large time 𝝉𝝉= 𝟏𝟏𝟎𝟎. 𝟎𝟎. it is found that for small times the primary velocity profile increases with decrease in 𝑲𝑲 𝟐𝟐 with constant 𝑹𝑹𝒆𝒆 while the secondary velocity profile decreases with decrease in 𝑲𝑲 𝟐𝟐 . It is also found that for large times, the primary flow increases with increase in 𝑲𝑲 𝟐𝟐 , the secondary velocity behaves in an oscillatory manner near the moving plate and increases near the stationary plate. There exists a back flow in the region 𝟎𝟎. 𝟎𝟎 ≪ 𝝋𝝋 ≪ 𝟏𝟏. 𝟎𝟎. The shear stress due to primary flow decreases with increase in 𝑲𝑲 𝟐𝟐 . On the other hand, it increases due to secondary flow with increase in rotation parameter with constant 𝑹𝑹𝒆𝒆 for small times. It is also observed that the shear stress for large time with constant 𝑹𝑹𝒆𝒆 shows layers of separation in both primary and secondary flow due to high rotation..

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Unsteady Couette Flow with Transpiration in a Rotating System

Idowu
Idowu University of Ilorin
A.S. Joseph K. M
A.S. Joseph K. M
Are
Are
E.B
E.B
Daniel K.S
Daniel K.S

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