Robust active flow control over a range of Reynolds numbers using an artificial neural network trained through deep reinforcement learning
This paper focuses on the active flow control of a computational fluid dynamics simulation
over a range of Reynolds numbers using deep reinforcement learning (DRL). More …
over a range of Reynolds numbers using deep reinforcement learning (DRL). More …
Mechanics of bluff body drag reduction during transient near-wake reversals
A combination of passive and active methods is used to manipulate the symmetry of the
turbulent wake of an Ahmed body. Dedicated experiments to study the wake reversals …
turbulent wake of an Ahmed body. Dedicated experiments to study the wake reversals …
Characteristics of flow past elongated bluff bodies with underbody gaps due to varying inflow turbulence
An experimental study was performed on two elongated bluff bodies with underbody gaps, a
square-back Ahmed body and a cuboid, to investigate the effects of geometry and the …
square-back Ahmed body and a cuboid, to investigate the effects of geometry and the …
Recent advances in wake dynamics and active drag reduction of simple automotive bodies
Z Yu, Z Bingfu - Applied Mechanics Reviews, 2021 - asmedigitalcollection.asme.org
This is a compendium of recent progresses in the development of wake dynamics and active
drag reduction (DR) of three-dimensional (3D) simple automotive models, largely focused …
drag reduction (DR) of three-dimensional (3D) simple automotive models, largely focused …
Active flow control using deep reinforcement learning with time delays in Markov decision process and autoregressive policy
Classical active flow control (AFC) methods based on solving the Navier–Stokes equations
are laborious and computationally intensive even with the use of reduced-order models …
are laborious and computationally intensive even with the use of reduced-order models …
[HTML][HTML] Drag reduction of a generic transport vehicle model using a fluidic oscillator
Base blowing is performed using a sweeping jet actuator centrally located at the base of a
square-back Ahmed body. Drag reduction along with a significant effect in terms of wake …
square-back Ahmed body. Drag reduction along with a significant effect in terms of wake …
Comparison of flow characteristics behind squareback bluff-bodies with and without wheels
The wake dynamics of two referenced variations of the squareback Windsor model with and
without wheels is numerically studied by performing improved delayed detached eddy …
without wheels is numerically studied by performing improved delayed detached eddy …
Optimization and sensitivity analysis of active drag reduction of a square-back Ahmed body using machine learning control
A machine learning control (MLC) is proposed based on the explorative gradient method
(EGM) for the optimization and sensitivity analysis of actuation parameters. This technique is …
(EGM) for the optimization and sensitivity analysis of actuation parameters. This technique is …
Effects of approach flow conditions on the unsteady three-dimensional wake structure of a square-back Ahmed body
This paper investigates the effects of approach flow conditions on the unsteady three-
dimensional wake characteristics of a square-back Ahmed body using improved delayed …
dimensional wake characteristics of a square-back Ahmed body using improved delayed …
Artificial intelligence control of a low-drag Ahmed body using distributed jet arrays
BF Zhang, DW Fan, Y Zhou - Journal of Fluid Mechanics, 2023 - cambridge.org
This work proposes a machine-learning or artificial intelligence (AI) control of a low-drag
Ahmed body with a rear slant angle φ= 35° with a view to finding strategies for efficient drag …
Ahmed body with a rear slant angle φ= 35° with a view to finding strategies for efficient drag …