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131 articles for “Convection”
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On the Relationship between Equivalent Potential Temperature (theta-e) and Convective Rain over Nigeria and Togo
Abstract: Convective precipitation is a key feature of West Africa's climate, driven by the West African monsoon system. Accurate forecasting of convective storms is challenging but essential for disaster mitigation in the region. This study investigates the ability of using equivalent potential temperature (theta-e) for predicting convective rainfall events in West Africa. Theta-e combines the thermodynamic effects of moisture and temperature to represent total energy available for convection. Daily rainfall and …
Published in International Journal of Atmosphere · Vol. 3, Issue 1, 2026 · pp. 26–43 Read article
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Effect MFD Viscosity on Bénard–Marangoni Ferroconvection in a Rotating Ferrofluid Layer with Convective Surface Boundary Condition
Abstract: AbstractThe combined effect of Coriolis force due to rotation and magnetic field dependent (MFD) viscosity on the onset of Bénard–Marangoni convection in a horizontal layer of ferrofluid is investigated theoretically. The lower boundary is taken to be rigid–isothermal, while the upper free boundary open to the atmosphere is flat and subject to a convective surface boundary condition. The Galerkin technique is employed to extract the critical stability parameters numerically. It …
Published in Recent Trends in Fluid Mechanics · Vol. 7, Issue 2, 2020 · pp. 12–32 Read article
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Heat Transfer Analysis Between Two Aluminium Parallel Plates With Natural Convection
Abstract: As a type of energy, heat can be transferred from heated systems using the natural convection heat transfer method, which has several uses in different industries. Natural convection method of heat conveyance is suitable in many cases due to absent of any external sources like fan. The transfer of this kind of energy can be listed as electrical and electronics equipment, nuclear reactors, domestic convection, dry cooling towers, thermo siphons, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 15, Issue 3, 2025 · pp. 26–34 Read article
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CONVECTION IN COMPRESSIBLE COUPLE-STRESS DUSTY FLUID
Abstract: The problem of thermosolutal convection in compressible couple-stress fluid in presence of suspended particles is considered. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For the case of stationary convection, the compressibility, couple-stress and stable solute gradient postpone the onset of convection whereas the suspended particles hasten the onset of convection. Graphs have been plotted by giving numerical values to the parameters to depict …
Published in Journal of Experimental & Applied Mechanics · Vol. 5, Issue 2, 2014 · pp. 27–37 Read article
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The Onset of Rayleigh-Bénard-Marangoni Convection in a Ferromagnetic Fluid Layer
Abstract: This study examined the implications of magnetic boundary conditions, which are vertical in nature, on buoyancy and surface tension–driven ferrothermal convection (FTC) in a ferrofluid layer. While the upper surface is stress-free and susceptible to general thermal boundary issues, the bottom surface is stiff and insulating against temperature changes. The eigenvalue issue is solved analytically using the regular perturbation method and numerically using the Galerkin technique. According to analysis, raising …
Published in Journal of Experimental & Applied Mechanics · Vol. 16, Issue 1, 2025 · pp. 1–9 Read article
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Forced Convection Heat Transfer Over a Plate Through Jets: A Review
Abstract: In the past two decades, many technical experimental, numerical and mathematical models are being presented by many researchers in India and abroad. A number of related papers are reviewed herein as a review of forced convection heat transfer over flat plate placed under micro multi-nozzle, jets zone and parameters affect the convective heat transfer. Some of them present important correlations for Nusselt number are collected here.Cite this Article Todkar RN, …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 47–50 Read article
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A Computational Study on Convection Heat Transfer in a Differentially Heated Cavity Using Nanofluids
Abstract: Heat transfer is an integral part of thermodynamics. It is used to study the heat and mass transfer in and out of the system during a process; the medium may vary from solids, liquids and gases. The three major divisions of heat transfer are conduction, convection and radiation. In this paper we have discussed the heat transfer through nanofluids particle and water. Water is a very common fluid used in …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 1, 2015 · pp. 14–18 Read article
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Linear Stability Analysis on the Onset of Rayleigh-Bénard Convection in A Second-Order Fluid with Maxwell-Cattaneo Law under the Effect of Non-Uniform Temperature Gradient
Abstract: AbstractA Linear stability analysis is performed to study the effect of non-uniform temperature gradient on the onset of Rayleigh-Bénard convection in a second order fluid with Maxwell-Cattaneo law. The eigenvalue is obtained for general boundary condition on velocity and temperature using Galerkin technique. The influence of various parameters on the onset of convection has been analyzed. One linear and five non-linear temperature profiles are considered and their comparative influence on …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 18–30 Read article
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A Review on Thin Film Production by Convectional and 3-D Printing Methods
Abstract: Thin film production and manufacturing has gained importance in digital world mainly due to its usage in PCBs , Energy storage cells, solar panels etc. This paper reviews various techniques implemented for thin film applications such as PVD, CVD, Roll To Roll (RTR, extrusion based on casting) and 3-D printing techniques. It also gives a comparative study of both convection methods and 3-D printing techniques thereby inferring that printing method …
Published in Trends in Mechanical Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 10–15 Read article
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On Triply-Diffusive Convection in Completely Confined Fluids
Abstract: The present paper derives some energy relationships and limitations for the growth rate of a disturbance in the problems of triply-diffusive convection of Veronis type configurations for fluids completely confined in an arbitrary region in the three dimensional Euclidean space 3 R .Keywords: Triply-diffusive convection, Rayleigh numbers, Prandtl numbers, Lewis numbers
Published in Journal of Experimental & Applied Mechanics · Vol. 5, Issue 3, 2014 · pp. 1–7 Read article
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Modified Double-Diffusive Convection in Viscoelastic Fluid
Abstract: Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 Modified double-diffusive convection in viscoelastic fluid of the Veronis’ and Stern’s type configurations is considered in the present paper. Semi-circle theorems that prescribe upper limits for the complex growth rate of oscillatory motions of neutral or growing amplitude are derived. The limits so derived naturally culminate in sufficient conditions which precludes the non-existence of such motions. The results obtained herein significantly …
Published in Journal of Experimental & Applied Mechanics · Vol. 7, Issue 1, 2016 · pp. 39–50 Read article
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Effect of Initial Temperature and Diameter of Ethanol Droplet on Evaporation Dynamics in Convective Air Medium
Abstract: Ethanol is a suitable biofuel as it has fewer toxic emissions and higher-octane numbers. For spray combustion applications, the gas phase motion must be considered while numerically investigating the fundamental aspects of droplet evaporation and combustion processes. Hence, we have numerically simulated the evaporation dynamics of an isolated spherically shaped ethanol droplet under a forced convective air environment in the absence of gravity. The momentum transfer between two phases is …
Published in Journal of Polymer & Composites Read article
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Natural Convection flow through Heated Vertical parallel plates
Abstract: This article presents the theoretical and experimental analysis of natural convection heat transfer through heated vertical parallel plates. Two vertical parallel plates are heated by providing electrical heating coils on the external surface of the plates maintaining uniform heat flux conditions at the wall. The length, width and thickness of each plate is 500 mm, 150 mm and 5 mm respectively. Outer surface is insulated and thus allowing the heat …
Published in Journal of Thermal Engineering and Applications · Vol. 9, Issue 1, 2022 · pp. 9–17 Read article
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Thermomagnetic Convection in a Ferrofluid Layer with Throughflow
Abstract: The effect of vertical throughflow on the onset of thermomagnetic convection in a ferrofluid layer in the presence uniform vertical magnetic field is investigated theoretically. Both the boundaries are considered to be rigid-ferromagnetic and insulated to temperature perturbations. The resulting eigenvalue problem is solved numerically using the Galerkin technique as well as analytically by regular perturbation technique with wave number as a perturbation parameter. Results show that the effect of …
Published in Journal of Experimental & Applied Mechanics · Vol. 11, Issue 3, 2020 · pp. 44–53 Read article
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Effect of Throughflow on the Onset of Electro-Thermo Convection in a Micropolar Fluid with Maxwell-Cattaneo Law
Abstract: AbstractThe effect of throughflow on the onset of Electro-thermo convection in a micropolar fluid with Maxwell-Cattaneo law is studied using the linear theory. The eigenvalue is obtained for free-free, rigid-rigid and rigid-free velocity boundary combinations with isothermal and adiabatic on the spin-vanishing boundaries using galerkin technique. The influence of Peclet number, Electric Rayleigh number and various micropolar fluid parameters on the onset of convection has been analyzed. It is found …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 1–17 Read article
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Numerical Investigation of Forced Convection Heat Transfer over a Plate with Nozzle Plate
Abstract: In the past two decades, many technical numerical and mathematical models are being presented by many researchers in India and abroad. A number of related papers are reviewed herein as a review of forced convection heat transfer over flat plate placed under micro multi-nozzle, jets zone and parameters affecting the convective heat transfer. Some of them presenting important correlations for Nusselt number are collected here. Keywords: Correlation, forced convection, heat …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 1, 2017 · pp. 34–40 Read article
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Forced Convection Heat Transfer Through Porous Media: A Review
Abstract: This paper reviews studies on forced convection heat transfer through Porous media. In the last four decades we have seen enormous amount of research work related to the study of heat transfer in porous media. Convective flows in porous media are of vital importance to these processes, thereby generating the need for their full understanding. This review paper includes the effects of pore to throat size ratio, Non-Darcy and dispersion …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 22–27 Read article
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A Comparative Study of Oven, Spouted Bed, and Convective Tunnel Drying Methods of Mango for Oil Production
Abstract: Mango seeds, with a high moisture content exceeding 70% (wet basis) require effective drying methods to ensure their preservation and to enhance the quality of derivative products like mango seed oil. Proper drying is essential to inhibit enzymatic activity and microbial growth, which extends the shelf life of these seeds. This study investigates multiple drying techniques, including conventional oven drying, spouted bed drying, and convective tunnel drying, to determine their …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 1, 2025 · pp. 15–19 Read article
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Effect of Internal Heat Generation on the Onset of Rayleigh-Bѐnard Chandrashekar Convection in a Micropolar Fluid with Maxwell Cattàneo Law
Abstract: AbstractThe effect of result from the substitution of the classical Fourier law by the nonclassical Maxwell-Cattàneo law and influence of internal heat generation on the Rayleigh-Bѐnard Chandrashekar internal heat generation parameter has a significant impact on the thermal mode making the system unstable. The eigen value is obtained for free-free, rigid-free and rigid-rigid velocity boundary combinations with isothermal temperature on the spin-vanishing boundaries. The influence of various micropolar fluid parameters …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 31–43 Read article
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Onset of Rayleigh-Bénard Convection in a Micropolar Fluid under the Influence of Temperature Modulation, Electric Field and Internal Heat
Abstract: AbstractThis paper analyses the onset of Rayleigh-Bénard convection in a micropolar fluid subject to an Imposed Time-periodic Boundary Temperature (ITBT) of small amplitude, an AC electric field along with internal heat. The temperature gradient between the walls of the fluid layer consists of a steady part and a time-dependent oscillatory part. The Venezian approach is adopted in arriving at the correction Rayleigh number. The effects of the oscillating temperature field …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 1, 2018 · pp. 44–62 Read article