Bijan Kumar Mandal

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1. INTRODUCTION The numerical simulation is a useful tool because it can easily employ various conditions by simply changing the parameters. Confined diffusion flames are commonly found in practical combustion systems, such as the power-plant combustor, gas turbine combustor, and jet engine afterburner. In these systems, fuel is injected into a duct with a(More)
In the age of ever increasing energy demand, hydrogen may play a major role as fuel. Hydrogen can be used as a transportation fuel, whereas neither nuclear nor solar energy can be used directly. The blends of hydrogen and ethanol have been used as alternative renewable fuels in a carbureted spark ignition engine. Hydrogen has very special properties as a(More)
One of the major objectives of current research and development efforts in combustion is to predict and minimize nitric oxide (NO) formation in practical combustion devices. During combustion of fuels having no nitrogen, nitric oxide is formed by three chemical mechanisms. They are Zeldovich or thermal mechanism, Fenimore or prompt mechanism and(More)
To meet stringent vehicular emission norms worldwide, various exhaust treatment techniques have been employed in modern engines. Oxides of nitrogen (NOx) are formed during combustion inside cylinder which is responsible for major respiratory problems in human beings. NOx also contributes to global warming and acid rain formation. One of the techniques of(More)
A certain percentage of the vapor compression based refrigeration, air conditioning and heat pump systems continue to run on halogenated refrigerants due to its excellent thermodynamic and thermo-physical properties along with the low cost. However, the halogenated refrigerants have adverse environmental impacts such as ozone layer depletion potential and(More)
Environmental degradation and depletion of fossil fuel reserves are matters of great concern around the world. Diesel is one of the main transport fuel used in sector and India depends heavily on oil import. Recent concerns over the environment, increasing fuel prices and shortage of its supply have promoted the interest in development of the alternative(More)
act— A CFD-based numerical model has been ed for the determination of the volume concentration ber density of soot in a laminar diffusion flame of in air, under transient condition following ignition of e. The transience is studied from the point of ignition final steady state is reached. The burner is an axiric co-flowing one with the fuel issuing through(More)
A global concern that has arisen in the present time due to the constant depletion of the fossil fuels reservoirs and also due to the greenhouse gases emitted by use these fuels has led many researchers to find alternate sources of energy, out of which biodiesels have found a suitable place. Thus, in this effort of finding the compatibility of bio-fuels in(More)
A CFD-based numerical model has been developed for the determination of the volume concentration and number density of soot in a laminar diffusion flame of methane in air, under transient condition following ignition of the flame. The transience is studied from the point of ignition till the final steady state is reached. The burner is an axi-symmetric(More)