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Aviation kerosene is commonly used in combustion and regenerative engine cooling processes in propulsion and power-generation systems,including rocket,scramjet,and advanced gas turbine engines.In this paper,many surrogate models proposed in the open literature are examined for their applicability and accuracy in calculating thermodynamic and transport properties of the China aviation kerosene RP-3 at supercritical pressures,based on the extended corresponding-states methods.The enthalpy change from endothermic decomposition and low heating value from combustion of the jet fuel are also evaluated.Results from a number of simple and representative surrogate models,which contain species components ranging from 1 to10,are analyzed in detail.Data analyses indicate that a surrogate model with four species is the best choice for thermophysical property calculations under the tested conditions,with fluid temperature up to 650 K at various supercritical pressures.The surrogate model is particularly accurate in predicting the pseudo-critical temperature of aviation kerosene RP-3 at a supercritical pressure.A simple surrogate model containing the n-decane species and a surrogate model containing 10 species are the other two acceptable options.The work conducted herein is of practical importance for theoretical analyses and numerical simulations of various physicochemical processes at engine operating conditions.
Aviation kerosene is commonly used in combustion and regenerative engine cooling processes in propulsion and power-generation systems, including rocket, scramjet, and advanced gas turbine engines. In this paper, many surrogate models proposed in the open literature are examined for their applicability and accuracy in calculating thermodynamic and transport properties of the China aviation kerosene RP-3 at supercritical pressures, based on the extended corresponding-states methods. The enthalpy change from endothermic decomposition and low heating value from combustion of the jet fuel are also. number of simple and representative surrogate models, which contain species components ranging from 1 to 10, are analyzed in detail. Data analyses indicate that a surrogate model with four species is the best choice for thermophysical property calculations under the tested conditions, with fluid temperature up to 650 K at various supercritical pressures.The surrogate model is particul arly accurate in predicting the pseudo-critical temperature of aviation kerosene RP-3 at a supercritical pressure. A simple surrogate model containing the n-decane species and a surrogate model containing 10 species are the other two acceptable options. practical importance for theoretical analyzes and numerical simulations of various physicochemical processes at engine operating conditions.