Effect of time - periodic modulation on convection in solutions of dilute polymeric liquids in a porous medium

• Autorzy: Siddheshwar P. G. , Srikrishna C. V.
• Języki publikacji: EN

Abstrakty

EN

The thermal instability in a layer of dilute polymeric liquid when boundaries are subjected to imposed time - periodic boundary temperatures (ITBT) is investigated. The critical Rayleigh and wave numbers for small amplitudes of ITBT are obtained for synchronous and asynchronous cases by following the Venezian approach. For small frequency modulation the Floquet theory adopted by Rosenblat and Herbert is employed and the periodicity and amplitude criterion is determined for thermal stability. The qualitative effects of various governing parameters on convective system are discussed. The problem has applications in solidification process of polymeric solutions and melts.

Słowa kluczowe

EN

polymeric liquids; modulation; Rivlin-Ericksen; Rayleigh-Benard

PL

płyn polimerowy; modulacja; Rayleigh-Benard; Rivlin-Ericksen

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2008
• Tom: Vol. 13, no 3
• Strony: 753--780
• Opis fizyczny: Bibliogr. 15 poz., tab., wykr.

Twórcy

autor

Siddheshwar P. G.

autor

Srikrishna C. V.

• Department of Mathematics Bangalore University Bangalore 560 001,

Bibliografia

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