Abstract
For the description of the physical properties of complex fuel, fuel surrogates and their thermophysical properties are crucial to be proposed and determined. The thermophysical properties of fuel are in connection with the design and optimization of injection system in engine, and furtherly influence the performance as well as the emissions of the engine. In this study, we investigated the liquid kinematic viscosity and surface tension of the proposed binary fuel surrogates containing iso-octane with methyl hexanoate between (303.15 and 408.15) K, n-decane with methyl decanoate and methyl octanoate between (313.15 and 423.15) K at the three-mole fraction (0.2500, 0.5000, and 0.7500) close to saturation conditions, respectively, by surface light scattering method. A U-tube densimeter was utilized to determine their liquid density from (293.15 to 433.15) K. Additionally, the GROMOS force field which has been validated for similar systems in our previous study was also applied to simulate the thermophysical properties of the proposed mixtures over the same temperature range. The results show good agreement between the experimental data and the simulation, which provides more demonstration of the acceptance of the GROMOS force field for simulating the alkanes and fatty acid methyl and ethyl esters.
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