Accession Number : ADA485366


Title :   The Effect of Spray Initial Conditions on Heat Release and Emissions in LDI CFD Calculations (Preprint)


Descriptive Note : Technical memo


Corporate Author : AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE


Personal Author(s) : Iannetti, Anthony C ; Liu, Nan-Suey ; Davoudzadeh, Farhad


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a485366.pdf


Report Date : Jun 2008


Pagination or Media Count : 28


Abstract : The mass, velocity distribution, droplet size and distribution of liquid spray has a primary effect on the combustion heat release process. This heat release process then affects emissions like Nitrogen Oxides (NOx) and Carbon Monoxide (CO). Computational Fluid Dynamics gives the engineer insight into these processes, but various setup options exist (number of droplet groups, initial droplet temperature) for spray initial conditions. This paper studies these spray initial condition options using the National Combustion Code (NCC) on a single swirler Lean Direct Injection (LDI) flame tube. Using laminar finite rate chemistry, comparisons are made against experimental data for velocity measurements, temperature, and emissions (NOx, CO).


Descriptors :   *HEAT , *RELEASE , *EMISSION , *COMPUTATIONAL FLUID DYNAMICS , CARBON MONOXIDE , FLAMES , NITROGEN OXIDES , SPRAYS , MEASUREMENT , INJECTION , VELOCITY , DROPS


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE