Computations of spray, fuel-air mixing, and combustion in a lean-premixed-prevaporized combustorA code was developed for computing the multidimensional flow, spray, combustion, and pollutant formation inside gas turbine combustors. The code developed is based on a Lagrangian-Eulerian formulation and utilizes an implicit finite-volume method. The focus of this paper is on the spray part of the code (both formulation and algorithm), and a number of issues related to the computation of sprays and fuel-air mixing in a lean-premixed-prevaporized combustor. The issues addressed include: (1) how grid spacings affect the diffusion of evaporated fuel, and (2) how spurious modes can arise through modelling of the spray in the Lagrangian computations. An upwind interpolation scheme is proposed to account for some effects of grid spacing on the artificial diffusion of the evaporated fuel. Also, some guidelines are presented to minimize errors associated with the spurious modes.
Document ID
19930065904
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dasgupta, A. (NASA Lewis Research Center Cleveland, OH, United States)
Li, Z. (NASA Lewis Research Center Cleveland, OH, United States)
Shih, T. I.-P. (Carnegie Mellon Univ. Pittsburgh, PA, United States)
Kundu, K. (NASA Lewis Research Center Cleveland, OH, United States)
Deur, J. M. (Sverdrup Technology, Inc. Brook Park, OH, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 93-2069
Meeting Information
Meeting: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit