Accession Number:

ADA261813

Title:

Influence of Supercritical Conditions on Pre-Combustion Chemistry and Transport Behavior of Jet Fuels

Descriptive Note:

Final rept. 9 Jul 1992-9 Jan 1993

Corporate Author:

CFD RESEARCH CORP HUNTSVILLE AL

Personal Author(s):

Report Date:

1993-02-01

Pagination or Media Count:

61.0

Abstract:

The objective of the Phase I study was to investigate heat transfer characteristics in supercritical flows. Detailed models were formulated to compute transport properties such as density, conductivity, viscosity, and specific heat in the supercritical regime. The models were incorporated into a general purpose Computational Fluid Dynamics CFD code capable of modeling flow, heat transfer, and reactions in complex geometries. Two and three- dimensional simulations were performed for supercritical flow and heat transfer in a test cell. Parallel experimental work was done by Professor L.D. Chen at the University of Iowa. The results of the Phase I work show that there is considerable augmentation of heat transfer near the critical point. Also, the large variation in density across the critical point has a significant effect on the near wall profiles of velocity and temperature. Ideal gas approximations of supercritical flows can result in gross errors in predicting heat transfer rates. The development of this supercritical transport model provides a basis for incorporating complex models for pre-combustion chemistry in jet fuels.... Thermal stability, Supercritical flows, Transport properties, Heat transfer.

Subject Categories:

  • Fluid Mechanics
  • Thermodynamics
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE