scholarly journals Solution of magnetohydrodynamic flow and heat transfer of radiative viscoelastic fluid with temperature dependent viscosity in wire coating analysis

PLoS ONE ◽  
2018 ◽  
Vol 13 (3) ◽  
pp. e0194196 ◽  
Author(s):  
Zeeshan Khan ◽  
Muhammad Altaf Khan ◽  
Nasir Siddiqui ◽  
Murad Ullah ◽  
Qayyum Shah
Keyword(s):  
Heat Transfer ◽  
Viscoelastic Fluid ◽  
Magnetohydrodynamic Flow ◽  
Temperature Dependent ◽  
Temperature Dependent Viscosity ◽  
Flow And Heat Transfer ◽  
Wire Coating ◽  
Dependent Viscosity

scholarly journals Shooting method analysis in wire coating withdrawing from a bath of Oldroyd 8-constant fluid with temperature dependent viscosity

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 956-966 ◽  
Author(s):  
Zeeshan Khan ◽  
Haroon Ur Rasheed ◽  
Murad Ullah ◽  
Ilyas Khan ◽  
Tawfeeq Abdullah Alkanhal ◽  
...  
Keyword(s):  
Shooting Method ◽  
Numerical Solutions ◽  
Temperature Dependent ◽  
Temperature Dependent Viscosity ◽  
Shooting Technique ◽  
Flow And Heat Transfer ◽  
Wire Coating ◽  
Gradient Parameter ◽  
Dependent Viscosity ◽  
Method Analysis

Abstract The most important plastic resins used in wire coating are high/low density polyethylene (LDPE/HDPE), plasticized polyvinyl chloride (PVC), nylon and polysulfone. To provide insulation and mechanical strength, coating is necessary for wires. Simulation of polymer flow during wire coating dragged froma bath of Oldroyd 8-constant fluid incompresible and laminar fluid inside pressure type die is carried out numerically. In wire coating the flow depends on the velocity of the wire, geometry of the die and viscosity of the fluid.The non-dimensional resulting flow and heat transfer differential equations are solved numerically by Ruge-Kutta 4th-order method with shooting technique. Reynolds model and Vogel’s models are encountered for temperature dependent viscosity. The numerical solutions are obtained for velocity field and temperature distribution. The solutions are computed for different physical parameters.It is observed that the non-Newtonian propertis of fluid were favourable, enhancing the velocity in combination with temperature dependent variable. The Brinkman number contributes to increase the temperature for both Reynolds and Vogel’smodels. With the increasing of pressure gradient parameter of both Reynolds and Vogel’s models, the velocity and temperature profile increases significantly in the presence of non-Newtonian parameter. Furthermore, the present result is also compared with published results as a particular case.

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