Molecular Beam Studies of Volatile Liquids and Fuel Surrogates Using Liquid Microjets
Abstract
Our motivation is to explore the heating, evaporation, and aging of volatile fuel droplets, which evaporate and combust at pressures and temperatures up to 30 atm and 2000 K in a jet engine. A microscopic, ""blow by blow" description of these events can be obtained by monitoring the evaporation of liquid fuel inside a vacuum chamber and by bombarding it with ambient gases to measure collisional heating. We successfully carried out two separate sets of experiments over the grant period: I) studies of collisional heating of fuel droplets by ambient gases and 2) studies of super-Maxwellian helium evaporation from hydrocarbon liquids and jet fuels to investigate the packing and attractions of molecules at the surfaces of fuel droplets. During the course of these experiments, we developed the liquid micro jet technique for investigating volatile liquids in vacuum-based scattering experiments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 18, 2014
- Accession Number
- AD1011131
Entities
People
- Gilbert M. Nathanson
Organizations
- University of Wisconsin–Madison