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Coupled level set volume of fluid simulations of prefilming airblast atomization with adaptive meshing
conference contribution
posted on 2021-04-28, 14:39 authored by Jack Wetherell, Andrew GarmoryAndrew Garmory, Maciej SkaryszThe fuel atomisation process and the resultant spray affects nearly all aspects of combustion system performance, and must be well understood to enable the design of future combustion systems. The design of a fuel injector makes both numerical and experimental testing difficult, so simplified test pieces are often used, however, this does not accurately capture atomisation mechanisms and fuel distributions. This paper presents a computational method combining a Coupled Level Set Volume of Fluid model with Adaptive Mesh Refinement. A simple prefilmer has been used to validate the method. Comparisons of the flow field and ligament length distributions show good agreement with published DNS data. The use of AMR allows a lower total cell count, and so a reduction in computational cost of over 60% compared to previously reported results for the same case has been achieved. Further work will look to apply this method to more realistic injector geometry.
Funding
EPSRC Centre for Doctoral Training in Gas Turbine Aerodynamics
Engineering and Physical Sciences Research Council
Find out more...Theme 2: Multi-Physics and Multi-Functional Simulation Methods.
Engineering and Physical Sciences Research Council
Find out more...Proposal for a Tier 2 Centre - HPC Midlands Plus
Engineering and Physical Sciences Research Council
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School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering