G-jitter induced free convection near a two-dimensional stagnation point in micropolar fluids

• Autorzy: Sharidan S. , Amin N. , Pop I.
• Języki publikacji: EN

Abstrakty

EN

A numerical solution for the effect of a small but fluctuating gravitational field, characteristic of g-jitter, on the free convection boundary layer flow near the forward stagnation point of a two-dimensional symmetric body resulting from a step change in its surface temperature and immersed in a micropolar fluid is presented in this paper. Both the cases when the spin gradient on the wall is zero and non-zero are considered. The transformed non-similar boundary layer equations are solved numerically by a very efficient implicit finite-difference scheme known as the Keller-box method to investigate the effects on the skin friction and on the rate of heat transfer of variations in the forcing amplitude, a, forcing frequency, 'omega', and micropolar parameter, K. The results are given for a value of the Prandt number Pr=0.7. It has been found that these parameters affect considerably the considered flow characteristics. A comparison with earlier results for a Newtonian fluid (K=0) shows a good agreement.

Słowa kluczowe

EN

g-jitter; boundary layer; stagnation point; numerical results

PL

reologia; warstwa graniczna; ciecz newtonowska

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2005
• Tom: Vol. 10, no 2
• Strony: 311--328
• Opis fizyczny: Bibliogr. 33 poz., tab., wykr.

Twórcy

autor

Sharidan S.

• Department of Mathematics, University of Technology 81310 Johor Bahru, Johor, MALAYSIA

autor

Amin N.

• Department of Mathematics, University of Technology 81310 Johor Bahru, Johor, MALAYSIA

autor

Pop I.

• Faculty of Mathematics, University of Cluj R-3400 Cluj, CP 253, ROMANIA

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