Data-driven resolvent analysis
Resolvent analysis identifies the most responsive forcings and most receptive states of a
dynamical system, in an input–output sense, based on its governing equations. Interest in …
dynamical system, in an input–output sense, based on its governing equations. Interest in …
Triglobal resolvent analysis of swept-wing wakes
Through triglobal resolvent analysis, we reveal the effects of wing tip and sweep angle on
laminar separated wakes over swept wings. For the present study, we consider wings with …
laminar separated wakes over swept wings. For the present study, we consider wings with …
流体力学预解分析方法研究进展
袁昊, 寇家庆, 张伟伟 - 力学学报, 2024 - lxxb.cstam.org.cn
线性稳定性分析长期以来是揭示复杂流动机理的重要手段, 通过求解流动线性化算子的特征值
问题获得流动的直接模态及其频率, 增长率等信息. 然而其仅能描述系统微幅扰动随时间的指数 …
问题获得流动的直接模态及其频率, 增长率等信息. 然而其仅能描述系统微幅扰动随时间的指数 …
Efficient global resolvent analysis via the one-way Navier–Stokes equations
Resolvent analysis is a powerful tool for modelling and analysing transitional and turbulent
flows and, in particular, for approximating coherent flow structures. Despite recent …
flows and, in particular, for approximating coherent flow structures. Despite recent …
Improved convergence of the spectral proper orthogonal decomposition through time shifting
DCP Blanco, E Martini, K Sasaki… - Journal of Fluid …, 2022 - cambridge.org
Spectral proper orthogonal decomposition (SPOD) is an increasingly popular modal
analysis method in the field of fluid dynamics due to its specific properties: a linear system …
analysis method in the field of fluid dynamics due to its specific properties: a linear system …
An invitation to resolvent analysis
Resolvent analysis is a powerful tool that can reveal the linear amplification mechanisms
between the forcing inputs and the response outputs about a base flow. These mechanisms …
between the forcing inputs and the response outputs about a base flow. These mechanisms …
Interaction and breakdown induced by multiple optimal disturbances in hypersonic boundary layer
The present paper finds that the coexistence of multiple primary instability waves may cause
a non-trivial nonlinear interaction and breakdown process, which has not been reported …
a non-trivial nonlinear interaction and breakdown process, which has not been reported …
Wavelet-based resolvent analysis of non-stationary flows
E Ballouz, B Lopez-Doriga, STM Dawson… - Journal of Fluid …, 2024 - cambridge.org
This work introduces a formulation of resolvent analysis that uses wavelet transforms rather
than Fourier transforms in time. Under this formulation, resolvent analysis may extend to …
than Fourier transforms in time. Under this formulation, resolvent analysis may extend to …
Scalable resolvent analysis for three-dimensional flows
Resolvent analysis is a powerful tool for studying coherent structures in turbulent flows.
However, its application beyond canonical flows with symmetries that can be used to …
However, its application beyond canonical flows with symmetries that can be used to …
Nozzle dynamics and wavepackets in turbulent jets
O Kaplan, P Jordan, AVG Cavalieri… - Journal of Fluid …, 2021 - cambridge.org
We study a turbulent jet issuing from a cylindrical nozzle to characterise coherent structures
evolving in the turbulent boundary layer. The analysis is performed using data from a large …
evolving in the turbulent boundary layer. The analysis is performed using data from a large …