Non-linear non-equilibrium chemistry - Rhythmic phenomena induced by chemical reaction.

In the present work, two dimensional flow of a hyperbolic tangent fluid with chemical reaction and viscous dissipation near a stagnation point is discussed numerically. The analysis is performed in the presence of magnetic field. The governing partial differential equations are converted into non-linear ordinary differential equations by using appropriate transformation. The resulting higher order non-linear ordinary differential equations are discretized by finite difference method and then solved by SOR (Successive over Relaxation parameter) method. The impact of the relevant parameters is scrutinized by plotting graphs and discussed in details. The main conclusion is that the large value of magnetic field parameter and wiessenberg numbers decrease the streamwise and normal velocity while increase the temperature distribution. Also higher value of the Eckert number Ec results in increases in temperature profile.

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Chemical-Reaction Rates in Non-equilibrium Viscous Compressible Flows

10.1063/1.3076584 ◽

2008 ◽

Author(s):

E.V. Kustova ◽

E. A. Nagnibeda ◽

D. Giordano ◽

Takashi Abe

Keyword(s):

Chemical Reaction ◽

Compressible Flows ◽

Reaction Rates ◽

Viscous Compressible Flows ◽

Chemical Reaction Rates ◽

Non Equilibrium

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Exploration of activation energy and binary chemical reaction effects on nano Casson fluid flow with thermal and exponential space-based heat source

Multidiscipline Modeling in Materials and Structures ◽

10.1108/mmms-03-2018-0051 ◽

2019 ◽

Vol 15 (1) ◽

pp. 227-245 ◽

Cited By ~ 23

Author(s):

Gireesha B.J. ◽

M. Archana ◽

B. Mahanthesh ◽

Prasannakumara B.C.

Keyword(s):

Activation Energy ◽

Heat Source ◽

Chemical Reaction ◽

Radiative Heat ◽

Physical Parameters ◽

Content Type ◽

Heat Process ◽

Flow Past ◽

Non Linear ◽

Exponential Space

PurposeThe purpose of this paper is to explore the effects of binary chemical reaction and activation energy on nano Casson liquid flow past a stretched plate with non-linear radiative heat, and also, the effect of a novel exponential space-dependent heat source (ESHS) aspect along with thermal-dependent heat source (THS) effect in the analysis of heat transfer in nanofluid. Comparative analysis is carried out between the flows with linear radiative heat process and non-linear radiative heat process.Design/methodology/approachA similarity transformation technique is utilised to access the ODEs from the governed PDEs. The manipulation of subsequent non-linear equations is carried out by a well-known numerical approach called Runge–Kutta–Fehlberg scheme. Obtained solutions are briefly discussed with the help of graphical and tabular illustrations.FindingsThe effects of various physical parameters on temperature, nanoparticles volume fraction and velocity fields within the boundary layer are discussed for two different flow situations, namely, flow with linear radiative heat and flow with non-linear radiative heat. It is found that an irregular heat source/sink (ESHS and THS) and non-linear solar radiation play a vital role in the enhancement of the temperature distributions.Originality/valueThe problem is relatively original to study the effects of activation energy and binary chemical reaction along with a novel exponential space-based heat source on laminar boundary flow past a stretched plate in the presence of non-linear Rosseland radiative heat.

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Experimental verification of conservatively perturbed equilibrium for a complex non-linear chemical reaction

Chemical Engineering Science ◽

10.1016/j.ces.2020.116008 ◽

2021 ◽

Vol 229 ◽

pp. 116008 ◽

Cited By ~ 1

Author(s):

Baoxiang Peng ◽

Xilei Zhu ◽

Denis Constales ◽

Gregory S. Yablonsky

Keyword(s):

Chemical Reaction ◽

Experimental Verification ◽

Non Linear

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Impact of arrhenius activation energy in viscoelastic nanomaterial flow subject to binary chemical reaction and non-linear mixed convection

Thermal Science ◽

10.2298/tsci180524212a ◽

2020 ◽

Vol 24 (2 Part B) ◽

pp. 1143-1155

Author(s):

Salman Ahmad ◽

Khan Ijaz ◽

Ahmed Waleed ◽

Tufail Khan ◽

Tasawar Hayat ◽

...

Keyword(s):

Activation Energy ◽

Mixed Convection ◽

Chemical Reaction ◽

Skin Friction Coefficient ◽

Arrhenius Activation Energy ◽

Non Linear ◽

Homotopy Analysis ◽

Upward Direction ◽

Flow Variables ◽

Source Sink

The computational investigations on mixed convection stagnation point flow of Jeffrey nanofluid over a stretched surface is presented herein. The sheet is placed vertical over which nanomaterials flowing upward direction. Arrhenius activation energy and binary chemical reaction are accounted. Non-linear radiative heat flux, MHD, viscous dissipation, heat source/sink, and Joule heating are considered. Initially the non-linear flow expressions are converted to ordinary one and then tackled for series solutions by homotopy analysis method. Consider flow problem are discussed for velocity, temperature and concentration through various flow variables. Furthermore, skin friction coefficient, Sherwood number, and heat transfer rate are computed graphically.

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