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5 articles for “Lewis number”
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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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Numerical Investigation of Slip Conditions in Nanofluid Flow Induced by a Nonlinearly Stretching Sheet: A bvp4c Approach
Abstract: The present work describes a numerical analysis of the steady, laminar flow over a nonlinear stretching sheet in a nanofluid medium. Slip conditions in terms of velocity, temperature, and concentration have been introduced into the mathematical model to capture the impact of interfacial mass transfer on the stretching surface. The problem is modeled to include nanoparticle transportation in terms of Brownian diffusion and thermophoresis, thereby affecting the temperature and concentration …
Published in Recent Trends in Fluid Mechanics · Vol. 13, Issue 2, 2026 · pp. 34–51 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 · Vol. 11, Issue 14, 2023 Read article
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Laminar Propagation of Lean-Premixed Flames in Meso-scale Tubes
Abstract: A meso-scale channel was earlier developed [1] for the propagation of laminar lean premixed flames. This paper, therefore, reports the experimental variations of flame speed with inner meso-scale tube diameters (di), equivalence ratio (φ), and mixture flow rate (Q) with methane and propane fuels using the meso-scale channel developed earlier. Based on the flame front history, flame speed (SL) and propagation speed (Ud) were computed at temperature (T) greater than …
Published in Journal of Thermal Engineering and Applications · Vol. 1, Issue 2, 2014 · pp. 17–28 Read article