Results 31 to 40 of about 2,626,634 (290)
The minimal seed of turbulent transition in the boundary layer [PDF]
, 2011 This paper describes a scenario of transition from laminar to turbulent flow in a spatially developing boundary layer over a flat plate. The base flow is the Blasius non-parallel flow solution; it is perturbed by optimal disturbances yielding the largest
DE PALMA, Pietro +8 more
core +1 more source
Hybrid Flow Control on Boundary Layer Ingestion Inlet
Journal of Physics: Conference Series, 2021 Abstract For the boundary layer ingestion (BLI) inlet, how to control the flow is very important to improve the quality of the air flow at the outlet. In this paper, the research on the passive flow control is carried out by using rectangular straight spoiler blades, and the active flow control is carried out by using the blowing pipes ...
Yinhui Shang +3 more
openaire +1 more source
Aerospace, 2023 Present work investigates the potential of a long-range commercial blended wing body configuration powered by hydrogen combustion engines with future airframe and propulsion technologies.
Stanislav Karpuk, Yiyuan Ma, Ali Elham
doaj +1 more source
Nonlinear control of unsteady finite-amplitude perturbations in the Blasius boundary-layer flow [PDF]
, 2013 The present work provides an optimal control strategy, based on the nonlinear Navier–Stokes equations, aimed at hampering the rapid growth of unsteady finite-amplitude perturbations in a Blasius boundary-layer flow.
DE PALMA, Pietro +2 more
core +1 more source
Parameter Sensitivity Study on Inflow Distortion of Boundary Layer Ingested Turbofans
Aerospace, 2022 The inflow distortion to the fan introduced by the ingestion of the fuselage boundary layer is the most critical challenge in realizing the benefits of boundary later ingesting (BLI) concepts.
Xin Zhao +3 more
doaj +1 more source
Nonlinear disturbance evolution in a two-dimensional boundary layer along an elastic plate and induced radiated sound [PDF]
, 2010 The interaction between a boundary-layer flow and an elastic plate is addressed by direct numerical simulation, taking into account the full coupling between the fluid flow and the flexible wall.
EHRENSTEIN, Uwe +5 more
core +1 more source
The onset of instability in unsteady boundary-layer separation [PDF]
, 1996 The process of unsteady two-dimensional boundary-layer separation at high Reynolds number is considered. Solutions of the unsteady non-interactive boundary-layer equations are known to develop a generic separation singularity in regions where the ...
K. W. Cassel +5 more
core +1 more source
Control of a Supersonic Inlet in Off-Design Conditions with Plasma Actuators and Bleed
Aerospace, 2020 Supersonic inlets are a key component of present and future air-breathing propulsion systems for high-speed flight. The inlet design is challenging because of several phenomena that must be taken under control: shock waves, boundary layer separation and ...
Andrea Ferrero
doaj +1 more source
Body Force Modeling of the Aerodynamics of a Low-Speed Fan under Distorted Inflow †
International Journal of Turbomachinery, Propulsion and Power, 2019 New propulsive concepts, such as boundary layer ingestion, involve stronger interactions between the engine and its environment, and are thus more complex flows compared to classical architectures.
Emmanuel Benichou +5 more
doaj +1 more source
Smart CitiesComparative, experimentally grounded evidence for selecting smart city IoT data-layer architectures remains limited, complicating practical design decisions. This study provides an applied architecture decision-making guide by evaluating seven serverless
Victor Ariel Leal Sobral +1 more
doaj +1 more source