Stagnation point evaporation of a liquid fuel at near and super-critical conditions

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5845379

Lee, H S; Fernandez-Pello, A C; Oppenheim, A K

An analysis is presented of the transient evaporation of a liquid fuel in a high temperature, high pressure, stagnation point flow. The analysis describes the conditions that would be encountered at the forward stagnation point of a liquid droplet that is injected into a gaseous environment that is at a temperature that is well above, and at a pressure that is slightly below (near-critical), or well above (supercritical), those corresponding to the critical values of the liquid. The initial droplet injection process is modeled by suddenly imposing a strain stagnation gas flow on the still liquid surface. In the analysis the transient, axisymmetric, stream function-vorticity equation, and the conservation equations of energy and species for both liquid and gas phases are solved simultaneously to determine the profiles of the vorticity, energy and species distributions and the regression rate of the interface. Two different solution methods are used to calculate this unsteady boundary-value problem with a moving interface. These are: an expansion of the solution in a power series in time after the sudden initiation of the liquid heating process; and a fully numerical integration of the governing equations.

• OSTI ID: 5845379
• Report Number(s): CONF-861211-
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOUNDARY LAYERS
BOUNDARY-VALUE PROBLEMS
CONVECTION
DROPLETS
ENERGY TRANSFER
EVAPORATION
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GAS FLOW
HEAT TRANSFER
INTERFACES
LAYERS
LIQUID FUELS
MASS TRANSFER
MATHEMATICS
PARTICLES
PHASE TRANSFORMATIONS
PRESSURE EFFECTS
REGRESSION ANALYSIS
STAGNATION POINT
STATISTICS
SUPERCRITICAL STATE
TEMPERATURE EFFECTS
TWO-PHASE FLOW