Accession Number : ADA137208

Title :   Effects of Fuel Specification and Additives on Soot Formation.

Descriptive Note : Final rept. May 79-Jan 83,


Personal Author(s) : Samuelsen,G S ; Hack,R L ; Himes,R M ; Azzazy,M

Full Text :

Report Date : Dec 1983

Pagination or Media Count : 122

Abstract : The objective of this program was to develop an employ the method necessary to identify the causal effects of fuel properties, additive properties, and combustor operating conditions on soot formation and to provide information needed to evaluate and develop models destined for gas turbine design. Present knowledge of these effects is limited to systems which are either too simple to adequately represent gas turbine combustion or too complex to permit access to detailed optical diagnostics. The projected use by Air Force aircraft of relax-detailed optical diagnostics. The projected use by Air Force aircraft of relaxed specification fuels having an increased tendency to produce soot portends greater difficulty meeting the future USAF aircraft smoke emission goals and makes this information essential. To answer these technical questions, a multifaceted study was undertaken to test candidate model laboratory combustors in the conduct of fuel effects measurement of local soot size and number density, develop and assess the effect of extractive probe perturbation to local values of soot size and number density, employ an extractive probe and sampling system to assess the effect of fuel molecular structure and additives on the physical and chemical properties of soot, and determine the effectiveness of the ASTM smoke point in predicting sooting behavior in complex flows.

Descriptors :   *Gas turbines , *Soot , *Jet engine fuels , Emission , Fuels , Chemical composition , Combustion , Additives , Optical analysis , Specifications

Subject Categories : Combustion and Ignition
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE