Properties of n-dodecane diesel fuel surrogat...

Properties of n-dodecane diesel fuel surrogate used for computational modelling

Author Name : Dinesh Kaushal, Mohit Kumar, Rohit Kumar, Ashish Sharma

ABSTRACT

Transportation of vehicles is majorly depending upon the usage of gasoline and diesel fuels which has ultimately pollute our environment due to its incomplete combustion. Various alternative technologies have been discussed where a few attempts are dedicated to find alternate fuel technology like electric vehicle or bio-fuel insisted transportation. However, a few studies are devoted to improve the fuel and mechanical efficiency by using various techniques like increasing initial fuel temperature, auto burning mechanisms and creating additional turbulence at the inlet of the intake manifold to increase air-fuel mixing. A novel technology of using supercritical state of fuel instead of liquid state has less studied and still in its development stage. On the other hand, computational analysis assists researchers to examine the engine performance beforehand without constructing actual prototype. To know the fuel combustion characteristics generally surrogate fuels’ properties are generally used as actual fuels are a complex combination of hydrocarbons and it is very tedious to know the exact thermophysical properties of each component. Thus, a surrogate is chosen such that it can match the physical and chemical behaviour of target fuel. In this dissertation work, thermophysical properties of n-dodecane (C12) is studied in the supercritical regime which is a hydrocarbon usually used to imitate the actual fuel properties of kerosene fuel. It is found that the C12 properties have experienced drastic change w.r.t. temperature and pressure.

Keywords: diesel fuel, surrogate fuel, combustion, supercritical fuel, kerosene fuel.