Accession Number:

ADA289336

Title:

A Numerical Model to Predict the Fate of Jettisoned Aviation Fuel.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Pfeiffer, Karl D.

Report Date:

1994-12-01

Pagination or Media Count:

107.0

Abstract:

While airborne, military and civilian aircraft must occasionally jettison unburned aviation fuel into the atmosphere. This research investigates the fate of a jettisoned fuel e.g. JP-4, JP-8, etc. from initial release to final ground fall by numerically modeling the physical phenomena governing the fate of this fuel evaporation, advection, and dispersion. Using previous work in evaporation and free fall of fuel droplets as a foundation, this thesis presents an integrated evaporation advection and dispersion model designed to run under the resources of a typical personal computer. This integrated model is capable of using near real-time meteorological data i.e. vertical profiles of temperature, pressure and wind in all model calculations. Physical assumptions in the numerical model are presented, along with sample model calculations supporting these assumptions. Model calculations performed for two jettison scenarios show good agreement with previously published results.

Descriptors:

• *MATHEMATICAL MODELS
• *MATHEMATICAL PREDICTION
• *FUEL TANKS
• *AVIATION FUELS
• *SOIL POLLUTION
• *WEIGHT REDUCTION
• *FUEL CONTAMINATION
• *JETTISONABLE EQUIPMENT
• COMPUTATIONS
• DISPERSING
• MILITARY AIRCRAFT
• REAL TIME
• TEMPERATURE
• PHYSICAL PROPERTIES
• THESES
• METEOROLOGICAL DATA
• VERTICAL ORIENTATION
• DROPS
• CIVIL AVIATION
• MICROCOMPUTERS
• EVAPORATION
• ADVECTION
• SCENARI OS

Subject Categories:

• Operations Research
• Fuels
• Solid Wastes and Pollution and Control
• Military Aircraft Operations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE