Reactive mass transport modelling of a three-dimensional vertical fault zone with a finger-like convective flow regime

In this work the application of delay differential equations to the modelling of mass transport in porous media, where the convective transport of mass, is presented and discussed. The differences and advantages when compared with the Dispersion Model are highlighted. Using simplified models of the local structure of a porous media, in particular a network model made up by combining two different types of network elements, channels and chambers, the mass transport under transient conditions is described and related to the local geometrical characteristics. The delay differential equations system that describe the flow, arise from the combination of the mass balance equations for both the network elements, and after taking into account their flow characteristics. The solution is obtained using a time marching method, and the results show that the model is capable of describing the qualitative behaviour observed experimentally, allowing the analysis of the influence of the local geometrical and flow field characteristics on the mass transport.

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Dynamical significance of the Tanlu Fault Zone in the destruction of the North China Craton: The evidence provided by the three-dimensional Magnetotelluric array study

Tectonophysics ◽

10.1016/j.tecto.2021.228910 ◽

2021 ◽

pp. 228910

Author(s):

Gaofeng Ye ◽

Cheng Liu ◽

Xu Luo ◽

Sheng Jin ◽

Wenbo Wei ◽

...

Keyword(s):

Fault Zone ◽

North China Craton ◽

North China ◽

Three Dimensional ◽

The North ◽

Tanlu Fault Zone ◽

Tanlu Fault

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Magneto convective flow of casson nanofluid due to Stefan blowing in the presence of bio-active mixers

Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems ◽

10.1177/23977914211016692 ◽

2021 ◽

pp. 239779142110166

Author(s):

Venkatesh Puneeth ◽

Sarpabhushana Manjunatha ◽

Bijjanal Jayanna Gireesha ◽

Rama Subba Reddy Gorla

Keyword(s):

Magnetic Field ◽

Brownian Motion ◽

Convective Flow ◽

Three Dimensional ◽

Induced Magnetic Field ◽

Density Profiles ◽

Casson Nanofluid ◽

And Brownian Motion ◽

Similarity Transformations ◽

The Mathematical Model

The induced magnetic field for three-dimensional bio-convective flow of Casson nanofluid containing gyrotactic microorganisms along a vertical stretching sheet is investigated. The movement of these microorganisms cause bioconvection and they act as bio-active mixers that help in stabilising the nanoparticles in the suspension. The two forces, Thermophoresis and Brownian motion are incorporated in the Mathematical model along with Stefan blowing. The resulting model is transformed to ordinary differential equations using similarity transformations and are solved using [Formula: see text] method. The Velocity, Induced Magnetic field, Temperature, Concentration of Nanoparticles, and Motile density profiles are interpreted graphically. It is observed that the Casson parameter decreases the flow velocity and enhances the temperature, concentration, and motile density profiles and also it is noticed that the blowing enhances the nanofluid profiles whereas, suction diminishes the nanofluid profiles. On the other hand, it is perceived that the rate of heat conduction is enhanced with Thermophoresis and Brownian motion.

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