Broadband reconstruction of inhomogeneous turbulence using spectral proper orthogonal decomposition and Gabor modes
Broadband reconstruction of inhomogeneous turbulence using spectral proper orthogonal decomposition and Gabor modes
复制标题
使用谱本征正交分解和 Gabor 模式对非均匀湍流进行宽带重建
DOI:
10.1017/jfm.2020.78
复制
发表时间:
2020
影响因子:
3.7
通讯作者:
Lele, S
中科院分区:
文献类型:
--
作者:
Ghate, A. S.;Towne, A.;Lele, S
A new methodology to construct three-dimensional, temporally stationary but spatially inhomogeneous, incompressible turbulence is presented. The method combines use of the data-driven spectral proper orthogonal decomposition (SPOD) to identify and isolate large-scale coherent motions of the flow, together with a physics-based enrichment algorithm using spatiotemporally localized Gabor modes that capture the inertial subrange turbulence. This fusion of data-driven and physics-based methods enables a statistically correct reconstruction of broadband turbulent flows using fewer modes than would be required using SPOD alone. To demonstrate the approach, we consider the problem of reconstructing wake turbulence on a plane downstream of a dragging actuator disk impinged by homogeneous isotropic turbulence. The reconstructed flow has single- and two-point correlations that are consistent with the reference high-resolution simulation data and could be used to generate statistically consistent inflow boundary conditions for subsequent simulations.
登录
查看更多内容
影响因子:
1
作者:
M. Sanjosé;A. Towne;Prateek Jaiswal;S. Moreau;S. Lele;Adrien Mann
通讯作者:
M. Sanjosé;A. Towne;Prateek Jaiswal;S. Moreau;S. Lele;Adrien Mann
DOI:
--
发表时间:
2018
期刊:
Journal of Physics: Conference Series
影响因子:
--
作者:
E. Quon;A. Ghate;S. Lele
通讯作者:
S. Lele
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
A. Ghate;N. Ghaisas;S. Lele;A. Towne
通讯作者:
A. Towne
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
H. Guest
通讯作者:
H. Guest