Accession Number : ADA267594


Title :   Spray Combustion Experiments and Numerical Predictions


Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER


Personal Author(s) : Mularz, Edward J ; Bulzan, Daniel L ; Chen, Kuo-Huey


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a267594.pdf


Report Date : Jan 1993


Pagination or Media Count : 25


Abstract : The next generation of commercial aircraft will include turbofan engines with performance significantly better than those in the current fleet. Control of particulate and gaseous emissions will also be an integral part of the engine design criteria. These performance and emission requirements present a technical challenge for the combustor: control of the fuel and air mixing and control of the local stoichiometry will have to be maintained much more rigorously than with combustors in current production. A better understanding of the flow physics of liquid fuel spray combustion is necessary. This paper describes recent experiments on spray combustion where detailed measurements of the spray characteristics were made, including, local drop-size distributions and velocities. Also, an advanced combustor CFD code has been under development and predictions from this code are compared with experimental results. Studies such as these will provide information to the advanced combustor designer on fuel spray quality and mixing effectiveness. Validation of new fast, robust, and efficient CFD codes will also enable the combustor designer to use them as additional design tools for optimization of combustor concepts for the next generation of aircraft engines. Combustion, Fuel sprays, CFD, Gas turbine combustors


Descriptors :   *COMBUSTION , *COMPUTATIONAL FLUID DYNAMICS , *FUEL SPRAYS , *GAS TURBINES , AIRCRAFT ENGINES , COMBUSTORS , COMMERCIAL AIRCRAFT , CONTROL , DESIGN CRITERIA , DROPS , EMISSION , FLOW , FUELS , INTEGRALS , LIQUIDS , MATHEMATICAL PREDICTION , MEASUREMENT , MIXING , OPTIMIZATION , PARTICULATES , PHYSICS , PRODUCTION , QUALITY , REQUIREMENTS , STOICHIOMETRY , TOOLS , TURBINES , TURBOFAN ENGINES , VALIDATION , VELOCITY


Subject Categories : Combustion and Ignition
      Fuels
      Jet and Gas Turbine Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE