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Gangadharaiah Y.H

Gangadharaiah Y.H
RV Insititute of Technology and Management

Ph.D

About

40
Publications
1,663
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Introduction
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Publications

Publications (40)
Chapter
The combined impact of temperature-reliant viscosity and variable heat source pattern on the Onset of Rayleigh–Benard Convection has been investigated. The regular perturbation approach is performed to solve the extended eigenvalue problem analytically. The temperature-reliant viscosity is known to be exponential. We addressed three types of combin...
Chapter
The purpose of this study was to investigate the combined impact of boundary slab and gravity variance on the onset of binary convective motion in a porous layer. The lower boundary of the porous bed is subjected to a steady-state heat flux. Furthermore, the conductivity of the plate is usually different from the conductivity of the porous sheet. W...
Article
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In this study, the start of thermosolutal penetrative convection in a horizontal fluid layer heated and salted from below was investigated analytically and graphically in the presence of throughflow and changeable gravity field effects. The normal mode technique is used to test the system's stability properties. The mathematical expressions for sta...
Article
This study examined the flow and thermal transfer feature of MHD (magnetohydrodynamic) Casson, Carreau, and Williamson fluid movements over a parabolic extending region with exponential heat generation effect. The mathematical model is transformed into Ordinary Differential Equations (ODEs) by utilizing appropriate similarity variables and resolved...
Article
In the present article, the combined impact of vertical throughflow and temperature-reliant viscosity on the fluid-saturated anisotropic porous matrix is considered for investigation numerically by the Galerkin technique. The temperature-reliant viscosity is known to be exponential. The porous matrix is subject to continuous vertical throughflow. A...
Article
In the present study, the commencement of double-diffusive convection with an internal heat source is studied using a linear instability analysis. The system consists of a fluid layer on top of a porous layer saturated with the same fluid. The boundaries are insulating to temperature perturbations, and the regular perturbation technique is applied...
Article
Linear stability analysis was applied to the onset of penetrative convective motion under the changeable gravity field in an asymmetric arrangement of porous bed saturated by a nanofluid. It also integrates, along with thermophoresis, the influence of Brownian motion, and using the Galerkin processes, the eigenvalue problem is solved. Four differen...
Article
Full-text available
The onset of convective motion in a fluid saturated anisotropic porous medium layer is examined analytically in the occurrence of the qualitative effect of the source of variable internal heat. Three different kinds of heat source functions: ( i ) N ( z ) = z (linear) (ii)N(z) = z ² (parabolic) and ( iii ) N ( z ) = z ³ (cubic) are considered. The...
Article
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Marangoni convective flow of fluid layer overlying a porous layer with anisotropic permeability and thermal diffusivity is addressed. Flow analysis has been carried out in presence of throughflow. Beavers-Joseph's slip condition is applied to the fluid-porous layer interface. The boundaries are known to be rigid, but permeable, and insulated to flu...
Article
When a thin horizontal fluid layer overlying a porous layer is heated from below, convection starts after that the temperature difference between the lower and upper surfaces has reached a critical value. Two effects are responsible for this motion: buoyancy and variation of the surface tension with temperature; the first effect is usually referred...
Article
The effect of variable viscosity on the onset of penetrative convection simulated via internal heating in a fluid layer. The upper surface of a fluid layer is assumed to be deformably free and dependence of viscosity is assumed to be exponential. The resulting eigen value problem is solved using a regular perturbation technique with wave number a a...
Article
The onset of Darcy-Benard penetrative convection in a liquid saturated porous layer of high permeability of practical importance is investigated by employing the Brinkman-Forchheimer- Lapwood extended Darcy flow model with fluid viscosity different from effective viscosity. The lower boundary is taken to be rigid and isothermal and the upper surfac...
Article
Full-text available
The effects of thermal anisotropy and mechanical anisotropy on the onset of Bernard-Marangoni convection in composite layers with anisotropic porous material is studied. The upper fluid surface, free to atmosphere is considered to be deformable. The eigen value problem is solved using a regular perturbation technique with wave number α as perturbat...
Article
The effects of internal heat source and Soret effect under zero gravity in a fluid layer is studied. The bottom boundary of the fluid layer is assumed to be either conducting or insulating to temperature and solute concentration perturbations while the top boundary is free and insulating. The linear stability analysis is followed and an exact solut...
Article
Full-text available
The wind power industry has seen an unprecedented growth in last few years. The surge in orders for wind turbines has resulted in a producer’s market. This market imbalance, the relative immaturity of the wind industry, and rapid developments in data processing technology have created an opportunity to improve the performance of wind farms and chan...
Article
The stability of convection in a two-layer system in which a layer of fluid with a temperature-dependent viscosity overlies and saturates a porous material is studied. The Beavers–Joseph slip condition is applied at the interface between the fluid and the porous layers and dependence of viscosity is assumed to be exponential. The ratio of fluid lay...
Article
Full-text available
The variable viscosity effects on the onset of penetrative convection simulated via internal heating in a two-layer system in which a layer of fluid overlies and saturates a layer of porous medium is studied. The Beavers-Joseph slip condition is applied at the interface between the fluid and the porous layers and dependence of viscosity is assumed...
Article
Full-text available
The onset of thermal convection due to heating from below in a system consisting of a fluid layer overlying a porous layer with anisotropic permeability and thermal diffusivity is studied. The onset of penetrative convection simulated via internal heating in the presence of a vertical throughflow. Flow in the porous medium is governed by Forchheime...
Article
The effect of vertical throughflow on the onset of penetrative convection simulated via internal heating in a two-layer system in which a layer of fluid overlies and saturates a layer of porous medium is studied. Flow in the porous medium is governed by Forchheimer-extended Darcy equation, and Beavers–Joseph slip condition is applied at the interfa...
Article
The effect of non-uniform basic temperature gradient on the onset of Marangoni convection in a horizontal layer with a free-slip bottom heated from below and cooled from above is considered. A linear stability analysis is performed to undertake a detail investigation. The eigenvalues are obtained for lower rigid isothermal and upper free adiabatic...
Article
Full-text available
The linear stability analysis of Marangoni convection in a fluid layer with a boundary slab of finite conductivity is considered. The effects of various non uniform temperature gradients are investigated. The lower boundary is a considered to be a thin slab of finite conductivity instead of a regular rigid surface. At the contact surface between th...
Article
Linear stability analysis has been performed to investigate the effect of internal heat generation on the criterion for the onset of Marangoni convection in a two-layer system comprising an incompressible fluid-saturated anisotropic porous layer over which lies a layer of the same fluid. The upper non-deformable free surface and the lower rigid sur...
Article
The effect of vertical throughflow and variable gravity field on the onset of penetrative convection simulated via internal heating in a porous medium is studied. Flow in the porous medium is governed by Forchheimer-extended Darcy equation. The boundaries are considered to be rigid, however permeable, and insulated to temperature perturbations. The...
Article
In the present study, onset of stationary Rayleigh-Benard convective instability in a fluid layer, with internal heating and thermally dependent viscosity has been investigated by means of linear stability analysis. The dependence of viscosity is assumed to be exponential. The resulting eigen value problem is solved using a regular perturbation tec...

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