Abstract
Development of thin double-layer film over a stretching sheet is studied. Similarity variables have been applied to transform the guiding Navier–Stokes equations into a set of coupled unsteady nonlinear partial differential equations. These equations along with moving boundary conditions are solved using the asymptotic method. We have presented analytically obtained long time solution for smaller values of Reynolds number. For small and moderate values of Reynolds number, guiding equations were solved using the finite difference method. Effects of density ratio, viscosity ratio, thickness ratio and Reynolds number are analyzed.
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We express our sincere thanks to the referee for his valuable comments and suggestions to improve the contents of this article. S. K. Singh expresses his sincere thanks to the Science and Engineering Research Board, India for financial support under Young Scientist Scheme (S. No. YSS/2015/002085).
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Dandapat, B.S., Maity, S. & Singh, S.K. Thin double-layer film development over a flat stretching sheet. Z. Angew. Math. Phys. 69, 109 (2018). https://doi.org/10.1007/s00033-018-1003-0
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DOI: https://doi.org/10.1007/s00033-018-1003-0