Double-layer optical fiber coating analysis using viscoelastic Sisko fluid as a coating material in a pressure-type coating die

Zeeshan Khan; Saeed Islam; Rehan Ali Shah; Nasir Siddiqui; Murad Ullah; Wahab Khan

doi:10.1117/1.OE.56.11.116107

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10 November 2017 Double-layer optical fiber coating analysis using viscoelastic Sisko fluid as a coating material in a pressure-type coating die

Zeeshan Khan, Saeed Islam, Rehan Ali Shah, Nasir Siddiqui, Murad Ullah, Wahab Khan

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Optical Engineering, 56(11), 116107 (2017). https://doi.org/10.1117/1.OE.56.11.116107

Abstract

Double-layer optical fiber coating is performed using a melt polymer satisfying a Sisko fluid model in a pressure-type die. For this purpose, wet-on-wet coating process is applied. The assumption of fully developed flow of a Sisko fluid model, two-layer liquid flows of an immiscible fluid is modeled in an annular die of length L, where the bare glass fiber is dragged at a higher speed. The nonlinear governing equations are modeled and then solved by utilizing optimal homotopy asymptotic method (OHAM). The convergence of series solution is established. The convergence of OHAM is also verified by the Adomian decomposition method. In addition, the shear-thinning and shear-thickening characteristics of the non-Newtonian Sisko fluid are examined, and a comparison is made with the Newtonian fluid. At the end, the present work is also compared with the experimental results already available in the literature by taking the non-Newtonian parameter that tends to zero.

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Zeeshan Khan, Saeed Islam, Rehan Ali Shah, Nasir Siddiqui, Murad Ullah, and Wahab Khan "Double-layer optical fiber coating analysis using viscoelastic Sisko fluid as a coating material in a pressure-type coating die," Optical Engineering 56(11), 116107 (10 November 2017). https://doi.org/10.1117/1.OE.56.11.116107

Received: 25 July 2017; Accepted: 10 October 2017; Published: 10 November 2017

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