每年出版 4 期
ISSN 打印: 1065-3090
ISSN 在线: 1940-4336
IF:
0.6
Immediacy Index:
0.6
Eigenfactor:
0.00013
JCI:
0.14
SJR:
0.201
SNIP:
0.313
CiteScore™::
1.2
H-Index:
13
Indexed in
NUMERICAL PROCEDURES TO GENERATE AND TO VISUALIZE FLOW FIELDS FROM ANALYTICAL OR EXPERIMENTAL STATISTICS: TURBULENT VELOCITY, FLUCTUATING SCALARS, AND VARIABLE DENSITY SPRAYS
Get access
摘要
Numerical simulations of the exact (DNS) or filtered (LES) Navier-Stokes equations are of great importance for analysis of physical phenomena and development of models for any turbulent flow. However, these tools need accurate initial fields and adapted treatments for the boundary conditions. This paper suggests some numerical procedures to generate any turbulent field with prescribed parameters. These fields may be used as initial or boundary conditions for any DNS or LES computation but also as a way to visualize a synthetic turbulent field reconstructed from experimental statistics. First of all, the Rogallo method for the generation of a turbulent velocity-vector field is given in detail. Then, a new procedure to generate any scalar field with prescribed statistics and characteristic length scales is proposed. Eventually, a procedure to initialize the initial dispersion of a Lagrangian spray field is presented. Again, the characteristic sizes of the clusters of droplets and their local density are entirely controlled.
-
Reveillon J., Pera C., Bouali Z., Examples of the Potential of DNS for the Understanding of Reactive Multiphase Flows, International Journal of Spray and Combustion Dynamics, 3, 1, 2011. Crossref
-
Pera Cecile, Knop Vincent, Chevillard Stephane, Reveillon Julien, Effects of Residual Burnt Gas Heterogeneity on Cyclic Variability in Lean-burn SI Engines, Flow, Turbulence and Combustion, 92, 4, 2014. Crossref
-
Chevillard Stephane, Michel Jean-Baptiste, Pera Cecile, Reveillon Julien, Evaluation of different turbulent combustion models based on tabulated chemistry using DNS of heterogeneous mixtures, Combustion Theory and Modelling, 21, 3, 2017. Crossref
-
Boukharfane R., Bouali Z., Mura A., Evolution of scalar and velocity dynamics in planar shock-turbulence interaction, Shock Waves, 28, 6, 2018. Crossref
-
Er-raiy Aimad, Bouali Zakaria, Réveillon Julien, Mura Arnaud, Optimized single-step (OSS) chemistry models for the simulation of turbulent premixed flame propagation, Combustion and Flame, 192, 2018. Crossref
-
Er-raiy Aimad, Boukharfane Radouan, Parsani Matteo, Effects of Composition Heterogeneities on Flame Kernel Propagation: A DNS Study, Fluids, 5, 3, 2020. Crossref
-
Bouali Z., Reveillon J., Pera C., Development of an extended reactor configuration to analyze preferential segregation impact on spray autoignition, Fuel, 302, 2021. Crossref
-
Carbajal-Carrasco Luis A., Bouali Zakaria, Mura Arnaud, Optimized single-step (OSS) chemistry for auto-ignition of heterogeneous mixtures, Combustion and Flame, 227, 2021. Crossref
-
Er-Raiy Aimad, Boukharfane Radouan, Parsani Matteo, Effects of differential diffusion and stratification characteristic length-scale on the propagation of a spherical methane-air flame kernel, AIAA Scitech 2021 Forum, 2021. Crossref
-
Le Boursicaud Marc, Carbajal-Carrasco Luis A., Bouali Zakaria, Mura Arnaud, Optimized two-step (OTS) chemistry model for the description of partially premixed combustion, Combustion and Flame, 245, 2022. Crossref