Instabilities in non-isothermal falling thin film flows

The stability and dynamics of thin liquid films subjected to van der Waals attraction, thermocapillarity and evaporative instabilities at the free surface, is studied using numerical simulations. For a Newtonian liquid, flow in thin liquid film on a solid support and bounded by a passive gas is repr...

Full description

Bibliographic Details
Main Authors:	Jameel, Ahmed Tariq, Hamza, Mohammad Ameer, Hoda, Asif, Rahman, Tariq M., Asrar, Waqar
Format:	Conference or Workshop Item
Language:	English
Published:	Kulliyyah of Engineering International Islamic University Malaysia (IIUM) 50728 Kuala Lumpur Malaysia 2017
Subjects:	TJ Mechanical engineering and machinery TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/63477/ http://irep.iium.edu.my/63477/7/63477_Instabilities%20in%20Non-isothermal%20Falling%20Thin%20Film%20Flows_complete.pdf

id	iium-63477
recordtype	eprints
spelling	iium-634772018-06-26T06:34:11Z http://irep.iium.edu.my/63477/ Instabilities in non-isothermal falling thin film flows Jameel, Ahmed Tariq Hamza, Mohammad Ameer Hoda, Asif Rahman, Tariq M. Asrar, Waqar TJ Mechanical engineering and machinery TP155 Chemical engineering The stability and dynamics of thin liquid films subjected to van der Waals attraction, thermocapillarity and evaporative instabilities at the free surface, is studied using numerical simulations. For a Newtonian liquid, flow in thin liquid film on a solid support and bounded by a passive gas is represented by Navier-Stokes equation, equation of continuity and appropriate boundary conditions. The external effects are generally incorporated in the body force term of the Navier-Stokes equation. These governing equations can then be simplified using so called long-wave approximation to arrive at a nonlinear partial differential equation, henceforth called equation of evolution (EOE), which describes the time evolution of the interfacial instability caused by internal and/or external effects [1-3]. The comprehensive characterization of the nonlinear dynamics and surface morphology of thin-film requires efficient numerical method for the solution of the equation of evolution (EOE). Our thin-film flow configuration has been numerically simulated using a fully explicit finite difference formulation as well as an implicit finite difference scheme. The explicit finite difference scheme seems to replicate the solution from spectral method as well as implicit scheme to a high degree of conformity for most of the cases investigated. Thus explicit scheme presented here is a relatively simple numerical scheme with much less computational expense compared to Fourier spectral and implicit Crank Nicholson schemes for the full scale simulation of the various thin film models. However, the detailed numerical simulation of the thin film problem is being investigated. Kulliyyah of Engineering International Islamic University Malaysia (IIUM) 50728 Kuala Lumpur Malaysia 2017-08-08 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/63477/7/63477_Instabilities%20in%20Non-isothermal%20Falling%20Thin%20Film%20Flows_complete.pdf Jameel, Ahmed Tariq and Hamza, Mohammad Ameer and Hoda, Asif and Rahman, Tariq M. and Asrar, Waqar (2017) Instabilities in non-isothermal falling thin film flows. In: 4th International Conference of Mathematical Applications in Engineering 2017 (ICMAE 2017), 08-09 August 2017, Kuala Lumpur, Malaysia.
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TP155 Chemical engineering
spellingShingle	TJ Mechanical engineering and machinery TP155 Chemical engineering Jameel, Ahmed Tariq Hamza, Mohammad Ameer Hoda, Asif Rahman, Tariq M. Asrar, Waqar Instabilities in non-isothermal falling thin film flows
description	The stability and dynamics of thin liquid films subjected to van der Waals attraction, thermocapillarity and evaporative instabilities at the free surface, is studied using numerical simulations. For a Newtonian liquid, flow in thin liquid film on a solid support and bounded by a passive gas is represented by Navier-Stokes equation, equation of continuity and appropriate boundary conditions. The external effects are generally incorporated in the body force term of the Navier-Stokes equation. These governing equations can then be simplified using so called long-wave approximation to arrive at a nonlinear partial differential equation, henceforth called equation of evolution (EOE), which describes the time evolution of the interfacial instability caused by internal and/or external effects [1-3]. The comprehensive characterization of the nonlinear dynamics and surface morphology of thin-film requires efficient numerical method for the solution of the equation of evolution (EOE). Our thin-film flow configuration has been numerically simulated using a fully explicit finite difference formulation as well as an implicit finite difference scheme. The explicit finite difference scheme seems to replicate the solution from spectral method as well as implicit scheme to a high degree of conformity for most of the cases investigated. Thus explicit scheme presented here is a relatively simple numerical scheme with much less computational expense compared to Fourier spectral and implicit Crank Nicholson schemes for the full scale simulation of the various thin film models. However, the detailed numerical simulation of the thin film problem is being investigated.
format	Conference or Workshop Item
author	Jameel, Ahmed Tariq Hamza, Mohammad Ameer Hoda, Asif Rahman, Tariq M. Asrar, Waqar
author_facet	Jameel, Ahmed Tariq Hamza, Mohammad Ameer Hoda, Asif Rahman, Tariq M. Asrar, Waqar
author_sort	Jameel, Ahmed Tariq
title	Instabilities in non-isothermal falling thin film flows
title_short	Instabilities in non-isothermal falling thin film flows
title_full	Instabilities in non-isothermal falling thin film flows
title_fullStr	Instabilities in non-isothermal falling thin film flows
title_full_unstemmed	Instabilities in non-isothermal falling thin film flows
title_sort	instabilities in non-isothermal falling thin film flows
publisher	Kulliyyah of Engineering International Islamic University Malaysia (IIUM) 50728 Kuala Lumpur Malaysia
publishDate	2017
url	http://irep.iium.edu.my/63477/ http://irep.iium.edu.my/63477/7/63477_Instabilities%20in%20Non-isothermal%20Falling%20Thin%20Film%20Flows_complete.pdf
first_indexed	2023-09-18T21:30:02Z
last_indexed	2023-09-18T21:30:02Z
_version_	1777412449040859136

Instabilities in non-isothermal falling thin film flows

Similar Items