Large eddy simulation based multi-environment PDF modelling for mixing processes of transcritical and supercritical cryogenic nitrogen jets

Cryogenics ◽  
2020 ◽  
Vol 110 ◽  
pp. 103134
Author(s):  
Namsu Kim ◽  
Yongmo Kim
Keyword(s):  
Large Eddy Simulation ◽  
Mixing Processes ◽  
Eddy Simulation ◽  
Simulation Based ◽  
Large Eddy

Large-Eddy Simulation-Based Retrieval of Dissipation from Coherent Doppler Lidar Data

2010 ◽  
Vol 136 (1) ◽  
pp. 45-57 ◽  
Author(s):  
Raghavendra Krishnamurthy ◽  
Ronald Calhoun ◽  
Harindra Fernando
Keyword(s):  
Large Eddy Simulation ◽  
Lidar Data ◽  
Doppler Lidar ◽  
Eddy Simulation ◽  
Coherent Doppler Lidar ◽  
Simulation Based ◽  
Large Eddy

Analysis and Optimization of Turbulent Mixing With Large Eddy Simulation

2006 ◽  
Author(s):  
Ying Huai ◽  
Amsini Sadiki
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Mixing ◽  
Optimization Procedure ◽  
Impinging Jet ◽  
Computational Domain ◽  
Original Design ◽  
Mixing Processes ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Practical Engineering

In this work, Large Eddy Simulation (LES) has been carried out to analyze the turbulent mixing processes in an impinging jet configuration. To characterize and quantify turbulent mixing processes, in terms of scalar structures and degree of mixing, three parameters have been basically introduced. They are “mixedness parameter”, which represents the probability of mixed fluids in computational domain, the Spatial Mixing Deficiency (SMD) and the Temporal Mixing Deficiency (TMD) parameters for characterizing the mixing at different scalar scale degrees. With help of these parameters, a general mixing optimization procedure has then been suggested and achieved in an impinging jet configuration. An optimal jet angle was estimated and the overall mixing degree with this jet angle reached around six times more than the original design. It turns out that the proposed idea and methodology can be helpful for practical engineering design processes.

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