Abstract
Post Processing Method for Lagrangian Spray Field Based on Mie Scattering Theory
Highlights
Computer Fluid Dynamics (CFD) method has been one of the main streams in the design and development of internal combustion engine systems, and this trend tends to grow in the upcoming years
In order to obtain valid simulation results, physical models must be correlated with real conditions, and for those halfexperimental based models with changing parameters, calibrations must be applied in the first place[1,2], adjusting the variable elements to meet up with real conditions
Number density, and other physical parameters into consideration, the visibility are given to each particle, making the boundary identification process starts from the same basis of Mie-Scattering experiments, which are widely used as calibration for spray modelling
Summary
Computer Fluid Dynamics (CFD) method has been one of the main streams in the design and development of internal combustion engine systems, and this trend tends to grow in the upcoming years. By selecting suitable physical models and proper algorithms, CFD could simulate detailed processes of fuel spray development. In order to obtain valid simulation results, physical models must be correlated with real conditions, and for those halfexperimental based models with changing parameters, calibrations must be applied in the first place[1,2], adjusting the variable elements to meet up with real conditions. The calibration of spray characters is mainly based on optical diagnostic experiments, for penetration and spray angle calibrations, often Miescattering or backlit imaging are conducted to obtain macroscopic photographs[3], spray boundaries are adopted using algorithms, and penetration and angles are figured out. As is often the case, bias exist between CFD researchers and experimental researchers, and none-matching calibration data could often be used as matching ones, resulting in wrong calibrated models
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