Non-linear heat and mass transfer during convective drying of kaolin cylinder under non-steady conditions

2007 ◽  
pp. 121-134
Author(s):  
Musielak Grzegorz ◽  
Banaszak Jacek
2019 ◽  
Vol 1 (6) ◽  
Author(s):  
Nabil T. EL-Dabe ◽  
Hazim A. Attia ◽  
Mohamed A. I. Essawy ◽  
Ibrahim H. Abd-elmaksoud ◽  
Ahmed A. Ramadan ◽  
...  

2017 ◽  
Vol 11 (1) ◽  
pp. 267-280 ◽  
Author(s):  
Nabil T. M. El-dabe ◽  
A. Refaie Ali ◽  
A. A. El-shekhipy ◽  
G. A. Shalaby

2004 ◽  
Vol 8 (1) ◽  
pp. 95-105 ◽  
Author(s):  
Christo Boyadjiev ◽  
Maria Doichinova

Many systems with non-linear heat and mass transfer processes might be unstable at certain conditions. Small disturbances might bring out them of their equilibrium state, after which they achieve itself to a new stable state. The method developed here concerns a non-linear analysis of hydrodynamic stability of the systems with intensive heat and mass transfer. It al lows the determination of the kinetic energy distribution between the main flow and the disturbance, when the equilibrium value of the disturbance amplitude is determined.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Gladys Tharapatla ◽  
Pamula Rajakumari ◽  
Ramana G.V. Reddy

Purpose This paper aims to analyze heat and mass transfer of magnetohydrodynamic (MHD) non-Newtonian fluids flow past an inclined thermally stratified porous plate using a numerical approach. Design/methodology/approach The flow equations are set up with the non-linear free convective term, thermal radiation, nanofluids and Soret–Dufour effects. Thus, the non-linear partial differential equations of the flow analysis were simplified by using similarity transformation to obtain non-linear coupled equations. The set of simplified equations are solved by using the spectral homotopy analysis method (SHAM) and the spectral relaxation method (SRM). SHAM uses the approach of Chebyshev pseudospectral alongside the homotopy analysis. The SRM uses the concept of Gauss-Seidel techniques to the linear system of equations. Findings Findings revealed that a large value of the non-linear convective parameters for both temperature and concentration increases the velocity profile. A large value of the Williamson term is detected to elevate the velocity plot, whereas the Casson parameter degenerates the velocity profile. The thermal radiation was found to elevate both velocity and temperature as its value increases. The imposed magnetic field was found to slow down the fluid velocity by originating the Lorentz force. Originality/value The novelty of this paper is to explore the heat and mass transfer effects on MHD non-Newtonian fluids flow through an inclined thermally-stratified porous medium. The model is formulated in an inclined plate and embedded in a thermally-stratified porous medium which to the best of the knowledge has not been explored before in literature. Two elegance spectral numerical techniques have been used in solving the modeled equations. Both SRM and SHAM were found to be accurate.


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