Motion in stratified fluids

RV More, AM Ardekani - Annual Review of Fluid Mechanics, 2023 - annualreviews.org
Density stratification due to temperature or salinity variations greatly influences the flow
around and the sedimentation of objects such as particles, drops, bubbles, and small …

Nonlinear mode decomposition via physics-assimilated convolutional autoencoder for unsteady flows over an airfoil

B Zhang - Physics of Fluids, 2023 - pubs.aip.org
I have developed a physics-assimilated convolutional autoencoder (CAE) neural network,
namely, PhyAENet, to carry out nonlinear mode decomposition of the unsteady flow field …

Large-scale streaks in a turbulent bluff body wake

A Nekkanti, S Nidhan, OT Schmidt… - Journal of Fluid …, 2023 - cambridge.org
A turbulent circular disk wake database (Chongsiripinyo & Sarkar, J. Fluid Mech., vol. 885,
2020) at Reynolds number streamwise vortices, which leads to streak formation through the …

Airfoil-based convolutional autoencoder and long short-term memory neural network for predicting coherent structures evolution around an airfoil

B Zhang - Computers & Fluids, 2023 - Elsevier
Airfoil stall induced by unsteady flow separation is a major inhibitor that constrains the
aircraft design. Hence, it is critical to have a better understanding of the flow dynamics …

Simulation-based study of low-Reynolds-number flow around a ventilated cavity

H Liu, Z Xiao, L Shen - Journal of Fluid Mechanics, 2023 - cambridge.org
Ventilated cavitating flows are investigated via direct numerical simulations, using a coupled
level set and volume of fluid method to capture the interface between the air and water …

Wavelet Transforms and Machine Learning Methods for the Study of Turbulence

JM Alam - Fluids, 2023 - mdpi.com
This article investigates the applications of wavelet transforms and machine learning
methods in studying turbulent flows. The wavelet-based hierarchical eddy-capturing …

Investigation on the behavior of flow and aerodynamic noise generated around the tandem seal-vibrissa-shaped cylinder

J Zhu, Y Lu, Q Jia, C Xia, S Chu - Physics of Fluids, 2023 - pubs.aip.org
Through comparing with the tandem circular and elliptic cylinders with the same
characteristic dimensions, the behavior of flow and flow-induced noise generated around …

Spectral proper orthogonal decomposition analysis of trailing edge cutback film cooling flow

R Wang, X He, X Yan - Physics of Fluids, 2022 - pubs.aip.org
Spectral proper orthogonal decomposition (SPOD) is performed to identify the
spatiotemporal coherent structures of trailing edge cutback film cooling flows. The analyzed …

Linear stability and spectral modal decomposition of three-dimensional turbulent wake flow of a generic high-speed train

XB Li, S Demange, G Chen, JB Wang… - Journal of Fluid …, 2024 - cambridge.org
This work investigates the spatio-temporal evolution of coherent structures in the wake of a
generic high-speed train, based on a three-dimensional database from large eddy …

Linear logistic regression with weight thresholding for flow regime classification of a stratified wake

XLD Huang, RF Kunz, XIA Yang - Theoretical and Applied Mechanics …, 2023 - Elsevier
A stratified wake has multiple flow regimes, and exhibits different behaviors in these regimes
due to the competing physical effects of momentum and buoyancy. This work aims at …