Vasudevan Raghavan
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View article: Effects of Geometrical Parameters on Thermal-Hydraulic performance of air flowing in Additively Manufacturable Heat Exchanger
Effects of Geometrical Parameters on Thermal-Hydraulic performance of air flowing in Additively Manufacturable Heat Exchanger Open
An additively manufactured airfoil finned plate-fin heat exchanger (PFHE) is proposed to be applied to a flue gas waste heat recovery system.This study numerically investigates the effect of various geometrical characteristics of the airfo…
View article: Effects of Flow Parameters on the Characteristics of Biogas Flames in a Crossflow Air Stream
Effects of Flow Parameters on the Characteristics of Biogas Flames in a Crossflow Air Stream Open
This study presents the flame characteristics of laminar cross-flow non-premixed biogas-air flames established in a boundary layer using ANSYS Fluent. The validated numerical model is comprehensive enough to include variable thermo-physica…
View article: Numerical study of laminar non-premixed biogas-air flames behind backward facing steps
Numerical study of laminar non-premixed biogas-air flames behind backward facing steps Open
Biogas, a renewable fuel, has low operational stability range in burners due to its inherent carbon-dioxide content. In cross-flow configuration, biogas is injected from a horizontal injector and air is supplied in an orthogonal direction …
View article: Numerical analysis of structure, stability and entropy generation in biogas coflow diffusion flames
Numerical analysis of structure, stability and entropy generation in biogas coflow diffusion flames Open
Biogas is a gaseous biofuel predominantly composed of methane and carbon-dioxide. Stability of biogas flames strongly depend upon the amount of carbon-dioxide present in biogas, which varies with the source of biomass and reactor. In this …
View article: Numerical simulations of biogas flames using OpenFOAM
Numerical simulations of biogas flames using OpenFOAM Open
Biogas is a renewable fuel obtained from the fermentation of animal and food wastes. Usage of biogas as a fuel in domestic and industrial applications has increased in recent times. The disadvantage of biogas is the presence of carbon-diox…
View article: Prediction of vapor-liquid equilibrium of ternary system at high pressures
Prediction of vapor-liquid equilibrium of ternary system at high pressures Open
The paper presents a numerical model for analyzing vaporliquid equilibrium of ternary (three-component) system at high pressures. The gas-phase non-idealities and solubility of gas in liquid are considered in the numerical model. The model…
View article: Experimental and computational investigation of the influence of stoichiometric mixture fraction on structure and extinction of laminar, nonpremixed dimethyl ether flames
Experimental and computational investigation of the influence of stoichiometric mixture fraction on structure and extinction of laminar, nonpremixed dimethyl ether flames Open
Experimental and computational investigation is carried out to elucidate the influence of stoichiometric mixture fraction, ξst, on the structure and critical conditions of extinction of nonpremixed dimethyl ether (DME) flames. The stoichio…
View article: Experimental and computational investigation of the influence of stoichiometric mixture fraction on structure and extinction of laminar, nonpremixed dimethyl ether flames
Experimental and computational investigation of the influence of stoichiometric mixture fraction on structure and extinction of laminar, nonpremixed dimethyl ether flames Open
Experimental and computational investigation is carried out to elucidate the influence of stoichiometric mixture fraction, ξst, on the structure and critical conditions of extinction of nonpremixed dimethyl ether (DME) flames. The stoichio…
View article: Experimental Study On Effects Of Addition Of Rice Husk On Coal Gasification
Experimental Study On Effects Of Addition Of Rice Husk On Coal Gasification Open
In this experimental study, effects of addition of rice husk on coal gasification in a bubbling fluidized bed gasifier, operating at atmospheric pressure with air as gasifying agent, are reported. Rice husks comprising of 6.5% and 13% by m…
View article: Mathematical Modelling of Coal Gasification Processes
Mathematical Modelling of Coal Gasification Processes Open
Coal is by far the most commonly employed fuel for electrical power generation around the world. While combustion could be the route for coal utilization for high grade coals, gasification becomes the preferred process for low grade coals …
View article: Effect of Downstream Flapping Plate on the Flow Field Characteristics behind a Circular Cylinder
Effect of Downstream Flapping Plate on the Flow Field Characteristics behind a Circular Cylinder Open
Two-dimensional numerical investigations of flow characteristics behind a circular cylinder in the presence of a flapping plate mounted in the wake have been carried out in the present study.The flapping frequency of the plate has been var…
View article: Turning diffuser: Development of performance correlations via asymptotic computational fluid dynamics technique
Turning diffuser: Development of performance correlations via asymptotic computational fluid dynamics technique Open
The performance of turning diffuser regardless of its expansion type, i.e., two-dimensional (2-D) or three-dimensional (3-D), has been traditionally rated using the guidelines established specifically for a 2-D turning diffuser. This has …