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|Title:||Three-dimensional modeling of fluid flow in a four-stroke compression ignition engine|
Rao, P Srinivasa
|Abstract:||This paper presents the analysis of three-dimensional calculations of flow field development in a four-stroke compression ignition (CI) engine during the compression process. The calculations are performed with a modified multidimensional arbitrary mesh using finite difference hydrodynamic model. A post processor has been developed to generate in-cylinder flow characteristics. Computations are carried out with a computing mesh of 4152 cells for crank angle duration of 90o requiring 17000 s of CPU time on SIMENS 32 bit mainframe computer. Results reveal an increase in swirl velocities and decrease in axial velocity of the fluid. Formation of squish induced vortices is observed near TDC. A comparison of average cylinder pressure obtained through three-dimensional computations and experimental values from a motored engine showed good agreement validating the prediction.|
|ISSN:||0975-1017 (Online); 0971-4588 (Print)|
|Appears in Collections:||IJEMS Vol.01(3) [June 1994]|
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