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The shock tube autoignition of 2,5-dimethylfuran (DMF)/n-heptane blends (DMF0-100%, by mole fraction) with equivalence ratios of 0.5, 1.0, and 2.0 over the temperature range of 1200–1800 K and pressures of 2.0 atm and 10.0 atm were investigated. A detailed blend chemical kinetic model resulting from the merging of validated kinetic models for the components of the fuel blends was developed. The experimental...
The rate coefficients of H abstraction and OH addition reactions of 2,4,4-trimethyl-1-pentene with OH were determined by both canonical variational transition state theory and conventional transition state theory. The potential energy surfaces were calculated at CCSD(T)/6-311++G(d, p)//BHANDHLYP/6-311(d, p) level and quantum effects were evaluated by the one-dimensional Wigner method and the multidimensional...
Experiments of ignition delay times on 2,4,4-trimethyl-1-pentene were performed behind reflected shock waves at pressure ranging from 2atm to 10atm, at equivalence ratios from 0.5 to 2.0, and with fuel concentrations of 0.5%, 0.75% and 1%. All ignition delay times follow the Arrhenius rule, and discussions on the effect of pressure, temperature, equivalence ratio and fuel concentration on ignition...
Ignition delay times of dimethoxy methane (DMM), n-heptane and DMM/n-heptane mixtures were measured behind reflected shock waves. The experiments were performed at the temperature ranges of 1100–1600K, at pressures of 2 and 10atm and equivalence ratios of 0.5, 1.0 and 2.0. A chemical kinetic model for DMM/n-heptane blends was built and validated with the experimental data. The calculations well agreed...
Interfacial thermal contact conductance is the primary factor limiting the heat transfer in many cryogenic engineering applications. This paper presents an experimental apparatus to measure interfacial thermal contact conductance between pressed alloys in a vacuum environment at low temperatures. The measurements of thermal contact conductance between pressed alloys are conducted by using the developed...
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