Numerical simulation of the vaporization of multi-component liquid fuels under high-pressure conditions is conducted in this study. A high-pressure drop vaporization model is developed by considering the high-pressure phase equilibrium which equates the fugacity of each component in both liquid and vapor phases. Peng-Robinson equation of state is used for the calculation of fugacity. To model t...

In this study, monocrystalline silicon was ablated by a single 1030 nm femtosecond laser pulse. Variable fluence (0.16–3.06 J/cm2) used, and two ablation thresholds (0.8 1.67 were determined experimentally. A two-temperature model established based on the dynamic optical model, carrier density phase explosion for comparison with experimental results. The melting (0.25 vaporization (0.80 when la...

This work reports the first data for the vapor pressures at several temperatures of the ionic liquids, [C(N/2)C(N/2)im][NTf(2)] (N = 4, 6, 8, 10, 12) measured using a Knudsen effusion apparatus combined with a quartz crystal microbalance. The morphology and the thermodynamic parameters of vaporization derived from the vapor pressures, are compared with those for the 1-alkyl-3-methylimidazolium ...

Micron-sized liquid perfluorocarbon (PFC) droplets are currently being investigated as activatable agents for medical imaging and cancer therapy. After injection into the bloodstream, superheated PFC droplets can be vaporized to a gas phase for ultrasound imaging, or for cancer therapy via targeted drug delivery and vessel occlusion. Droplet vaporization has been previously demonstrated using a...

Discovery of abundant anhydrite (CaS04) and gypsum (CaS0+2HzO) in the otherwise carbonate sediments comprising the upper portion of the rocks contained within the Chicxulub impact crater has prompted research on the shock-induced vaporization of these minerals. We use a vaporization criterion determined by shock-induced entropy. We reanalyze the shock wave experiments of Yang [ 11. He shocked 3...

This paper deals with the multicomponent nature of gas turbine fuels under high-pressure conditions. The study is motivated by the consideration that the droplet submodels that are currently employed in spray codes for predicting gas turbine combustor flows do not adequately incorporate the multicomponent fuel and high-pressure effects. The quasisteady multicomponent droplet model has been empl...

In this paper we develop an analytical model of Knudsen layer at the ablative wall taking into account the temperature gradient in the bulk gas. The region of validity of the existing models and effect of the temperature gradient on the Knudsen layer properties are calculated. 1 Electronic address: [email protected] Distribution A: Approved for public release; distribution unlimi...

The work described in this paper presents a set of experimental tests carried out Controlled Atmosphere Cone Calorimeter (CACC) order to study the evaporation rate 250 ml-‘batch’ n-heptane and methanol poured into an insulated 0.10 × 0.04 m3 steel pan exposed two ‘nominal’ irradiation levels 25 50 kW/m2. A low oxygen concentration is imposed during CACC tests. intent provide data for assessment...