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Does a wedge combustion chamber have high turbulence? 

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Results show that turbulence components between 4.5 and 7.5 kHz are of major importance in accelerating flame propagation in this combustion chamber and are not affected by the fuel-air ratio or different kinds of fuel/air mixtures.
Therefore to produce high turbulence prior to combustion within the cylinder, swirl induced by the inlet channel within the cylinder head will be helpful.
Journal ArticleDOI
Robert W. Schefer, M. Namazian, J. Kelly 
01 Jan 1989
26 Citations
Combustion heat release is found to have a significant effect on both the turbulence and mixing characteristics of these flows.
The result of studies show that flow structure and turbulence intensity are affected on combustion chamber geometries.
These data call for revisiting the widely accepted concept of combustion acceleration due to flame-generated turbulence.
The results show a high correlation between in cylinder turbulence and rate of heat release in the main part of combustion.
The residual turbulence level is shown to influence the combustion propagation phenomenology, highlighting the coexistence of both volumetric and frontlike combustion modes for the shorter aforementioned ratios.
The combustion predictions are considerably affected by the choice of turbulence model.
This flow configuration can be thought of as a relevant benchmark for testing turbulence and/or combustion models aimed at helping for the design of reliable LPP combustion chambers.
The findings of this study will broaden the knowledge on MILD combustion, and provide useful insight in developing reduced turbulence and chemistry models in the future.

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