scholarly journals MHD and Slip Effect on Two-immiscible Third Grade Fluid on Thin Film Flow over a Vertical Moving Belt

Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 575-586 ◽  
Author(s):  
Zeeshan Khan ◽  
Nasser Tairan ◽  
Wali Khan Mashwani ◽  
Haroon Ur Rasheed ◽  
Habib Shah ◽  
...  

Abstract The present paper related to thin film flows of two immiscible third grade fluids past a vertical moving belt with slip conditions in the presence of uniform magnetic field. Immiscible fluids we mean superposed fluids of different densities and viscosities. The basic governing equations of continuity, momentum and energy are incorporated. The modeled coupled equations are solved analytically by using Adomian Decomposition Method (ADM) along with Homotopy Analysis Method (HAM). The residual errors show the authentication of the present work. For comparison, numerical method (ND-Solve) is also applied and good agreement is found. The effects of model parameters on velocity, skin friction and temperature variation have been studied. At the end, the present study is also compared with single layer flow and revealed in close agreement with the result available in the literature.

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Fazle Mabood ◽  
Nopparat Pochai

We have investigated a thin film flow of a third grade fluid on a moving belt using a powerful and relatively new approximate analytical technique known as optimal homotopy asymptotic method (OHAM). The variation of velocity profile for different parameters is compared with the numerical values obtained byRunge-Kutta Fehlberg fourth-fifth ordermethod and with Adomian Decomposition Method (ADM). An interesting result of the analysis is that the three terms OHAM solution is more accurate than five terms of the ADM solution and this thus confirms the feasibility of the proposed method.


Author(s):  
Fazal Subhan ◽  
Suheel Abdullah Malik ◽  
Muhammad Asghar Khan ◽  
Muhammad Adnan Aziz ◽  
M. Irfan Uddin ◽  
...  

This paper presents a stochastic heuristic approach to solve numerically nonlinear differential equation (NLDE) governing the thin film flow of a third-grade fluid (TFF-TGF) on a moving belt. Moreover, the impact on velocity profile due to fluid attribute is also investigated. The estimate solution of the given NLDE is achieved by using the linear combination of Bernstein polynomials with unknown constants. A fitness function is deduced to convert the given NLDE along with its boundary conditions into an optimization problem. Genetic algorithm (GA) is employed to optimize the values of unknown constants. The proposed approach provided results in good agreement with numerical values taken by Runge–Kutta and more accurate than two popular classical methods including Adomian Decomposition Method (ADM) and Optimal Homotopy Asymptotic Method (OHAM). The error is minimized 10[Formula: see text] times to 10[Formula: see text] times.


2015 ◽  
Vol 2015 ◽  
pp. 1-13
Author(s):  
T. Gul ◽  
S. Islam ◽  
R. A. Shah ◽  
I. Khan ◽  
L. C. C. Dennis

This paper aims to study the influence of heat transfer on thin film flow of a reactive third order fluid with variable viscosity and slip boundary condition. The problem is formulated in the form of coupled nonlinear equations governing the flow together with appropriate boundary conditions. Approximate analytical solutions for velocity and temperature are obtained using Adomian Decomposition Method (ADM). Such solutions are also obtained by using Optimal Homotopy Asymptotic Method (OHAM) and are compared with ADM solutions. Both of these solutions are found identical as shown in graphs and tables. The graphical results for embedded flow parameters are also shown.


2014 ◽  
Vol 92 (10) ◽  
pp. 1196-1202 ◽  
Author(s):  
A.M. Siddiqui ◽  
A.A. Farooq ◽  
T. Haroon ◽  
M.A. Rana

In this paper, we model a steady thin film flow of an Oldroyd 8-constant fluid on a vertically moving belt. The governing nonlinear differential equation is first integrated exactly and then solved by applying the variational iteration method and the Adomian decomposition method. The numerical results obtained by these methods are then compared through graphs and tables and no visible difference is observed. This study highlights the significant features of the proposed methods and their ability for solving nonlinear problems arising in non-Newtonian fluid mechanics. Moreover, a reasonable estimation for the belt speed to lift the non-Newtonian fluid is also recorded. This estimation can be used for experimental verification.


2014 ◽  
Vol 69 (5-6) ◽  
pp. 263-272
Author(s):  
Hadi Roohani Ghehsareh ◽  
Saeid Abbasbandy ◽  
Marwan A. Kutbi ◽  
Ali Zaghian

In this paper, two efficient and powerful explicit and minimal approaches based on the Hankel- Padé method and Laplace Adomian decomposition method coupled with Padé approximation, respectively, are discussed and employed to obtain approximate results of similarity solutions for the magnetohydrodynamical (MHD) Falkner-Skan boundary layer flow over a permeable wall. The values of skin friction coefficients of the problem are computed with high accuracy. The presented results through tables and figures show the efficiency, reliability, and accuracy of the two presented approaches. Finally, the effects of various model parameters on the boundary layer flow are investigated graphically


2009 ◽  
Vol 64 (9-10) ◽  
pp. 553-558 ◽  
Author(s):  
Sohail Nadeem

The effects of variable viscosity on the flow and heat transfer in a thin film flow for a third grade fluid has been discussed. The thin film is considered on the outer side of an infinitely long vertical cylinder. The governing nonlinear differential equations of momentum and energy are solved analytically by using homotopy analysis method. The expression for the viscous dissipation and entropy generation are also defined. The graphical results are presented for various physical parameters appearing in the problem


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