Large Eddy Simulation of Scalar Dissipation Rate in an Internal Combustion Engine

2010 ◽  
Author(s):  
Yuxin Zhang ◽  
Jaal Ghandhi ◽  
Benjamin Petersen ◽  
Christopher Rutland
Keyword(s):  
Large Eddy Simulation ◽  
Internal Combustion Engine ◽  
Dissipation Rate ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Scalar Dissipation ◽  
Scalar Dissipation Rate ◽  
Eddy Simulation ◽  
Large Eddy

Large eddy simulation analysis of the turbulent flow in an optically accessible internal combustion engine using the overset mesh technique

2020 ◽  
pp. 146808741989646
Author(s):  
Federico Rulli ◽  
Alessio Barbato ◽  
Stefano Fontanesi ◽  
Alessandro d’Adamo
Keyword(s):  
Fluid Dynamics ◽  
Large Eddy Simulation ◽  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Mesh Technique

Computational fluid dynamics has become a fundamental tool for the design and development of internal combustion engines. The meshing strategy plays a central role in the computational efficiency, in the management of the moving components of the engine and in the accuracy of results. The overset mesh approach, usually referred to also as chimera grid or composite grid, was rarely applied to the simulation of internal combustion engines, mainly because of the difficulty in adapting the technique to the specific complexities of internal combustion engine flows. The article demonstrates the feasibility and the effectiveness of the overset mesh technique application to internal combustion engines, thanks to a purposely designed meshing approach. In particular, the technique is used to analyze the cycle-to-cycle variability of internal combustion engine flows using large eddy simulation. Fifty large eddy simulation cycles are performed on the well-known TCC-III engine in motored condition. Results are analyzed in terms of tumble center trajectory and using proper orthogonal decomposition to objectively characterize the spatial and temporal evolution of turbulent flow field in internal combustion engines. In particular, an original decomposition method previously applied by the authors to the TCC-III measured flow fields is here extended to computational fluid dynamics results.

Analysis and Interpretation of Data-Driven Closure Models for Large Eddy Simulation of Internal Combustion Engine

2021 ◽  
Author(s):  
Peetak Mitra ◽  
Majid Haghshenas ◽  
Niccolò Dal Santo ◽  
Mateus Dias Ribeiro ◽  
Shounak Mitra ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Data Driven ◽  
Closure Models ◽  
Eddy Simulation ◽  
Large Eddy
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