Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field

In this paper, we analyse the effect of an inclined magnetic field on the flow of a fluid film near an unsteady moving surface, by describing the time-varying stretching velocity of the moving surface as Uw=Ax/t. The Navier–Stokes equations governing the flow are then modified into a similarity ODE,...

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Main Authors: K.C. Shobha, G.P. Vanitha, B. Patil Mallikarjun, U.S. Mahabaleshwar, Gabriella Bognár
Format: Article
Language:English
Published: Elsevier 2023-07-01
Series:Alexandria Engineering Journal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1110016823003757
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author K.C. Shobha
G.P. Vanitha
B. Patil Mallikarjun
U.S. Mahabaleshwar
Gabriella Bognár
author_facet K.C. Shobha
G.P. Vanitha
B. Patil Mallikarjun
U.S. Mahabaleshwar
Gabriella Bognár
author_sort K.C. Shobha
collection DOAJ
description In this paper, we analyse the effect of an inclined magnetic field on the flow of a fluid film near an unsteady moving surface, by describing the time-varying stretching velocity of the moving surface as Uw=Ax/t. The Navier–Stokes equations governing the flow are then modified into a similarity ODE, which is treated by a numerical technique and analyzed in both axisymmetric and two-dimensional cases. The results show that solutions exist for a given range of the wall-moving variable. The velocity plots first increase and reach the maximum velocity and then decrease until the boundary condition. The streamlines are analyzed for both axisymmetric and two-dimensional flow patterns with respect to the stretching (A>0) and shrinking wall conditions (A<0). The study is carried out for large values of the wall motion parameter A. This study can be used to elucidate the effect of applied inclined magnetic field on the flow of liquid film in many practical applications such as in the sheet or wire coating industry, laboratories, painting and many others.
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spelling doaj.art-d31bc7306bf348aaaffcb64269c4d3652023-06-26T04:13:28ZengElsevierAlexandria Engineering Journal1110-01682023-07-0174675688Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic fieldK.C. Shobha0G.P. Vanitha1B. Patil Mallikarjun2U.S. Mahabaleshwar3Gabriella Bognár4Department of Studies and Research in Mathematics, Tumkur University, Tumakuru 572103, Karnataka, IndiaDepartment of Mathematics, Davanagere University, Davanagere, Karnataka, IndiaDepartment of Studies and Research in Mathematics, Tumkur University, Tumakuru 572103, Karnataka, IndiaDepartment of Mathematics, Davanagere University, Davanagere, Karnataka, IndiaInstitute of Machine and Product Design, University of Miskolc, 3515 Miskolc, Egyetemváros, HungaryIn this paper, we analyse the effect of an inclined magnetic field on the flow of a fluid film near an unsteady moving surface, by describing the time-varying stretching velocity of the moving surface as Uw=Ax/t. The Navier–Stokes equations governing the flow are then modified into a similarity ODE, which is treated by a numerical technique and analyzed in both axisymmetric and two-dimensional cases. The results show that solutions exist for a given range of the wall-moving variable. The velocity plots first increase and reach the maximum velocity and then decrease until the boundary condition. The streamlines are analyzed for both axisymmetric and two-dimensional flow patterns with respect to the stretching (A>0) and shrinking wall conditions (A<0). The study is carried out for large values of the wall motion parameter A. This study can be used to elucidate the effect of applied inclined magnetic field on the flow of liquid film in many practical applications such as in the sheet or wire coating industry, laboratories, painting and many others.http://www.sciencedirect.com/science/article/pii/S1110016823003757Fluid flowMoving surfaceStretching sheetMHDSimilarity method
spellingShingle K.C. Shobha
G.P. Vanitha
B. Patil Mallikarjun
U.S. Mahabaleshwar
Gabriella Bognár
Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
Alexandria Engineering Journal
Fluid flow
Moving surface
Stretching sheet
MHD
Similarity method
title Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
title_full Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
title_fullStr Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
title_full_unstemmed Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
title_short Liquid film flow over an unsteady moving surface with time-varying stretching velocity and inclined magnetic field
title_sort liquid film flow over an unsteady moving surface with time varying stretching velocity and inclined magnetic field
topic Fluid flow
Moving surface
Stretching sheet
MHD
Similarity method
url http://www.sciencedirect.com/science/article/pii/S1110016823003757
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AT bpatilmallikarjun liquidfilmflowoveranunsteadymovingsurfacewithtimevaryingstretchingvelocityandinclinedmagneticfield
AT usmahabaleshwar liquidfilmflowoveranunsteadymovingsurfacewithtimevaryingstretchingvelocityandinclinedmagneticfield
AT gabriellabognar liquidfilmflowoveranunsteadymovingsurfacewithtimevaryingstretchingvelocityandinclinedmagneticfield