Results 21 to 30 of about 2,748,488 (225)

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, CHERUBINI, Stefania, ROBINET, Jean-Christophe, J.-C. Robinet, BOTTARO, Alessandro, A. Bottaro, J. C. Robinet, S. Cherubini, P. De Palma   +8 more
core   +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, CHERUBINI, Stefania, ROBINET, Jean-Christophe   +2 more
core   +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, BOT, Patrick, GOBERT, Marie-Laure, Astolfi, André, Astolfi, Jacques-André, ASTOLFI, Jacques Andre   +5 more
core   +1 more source

Control of shock-induced boundary layer separation at supersonic speeds [PDF]

, 2007
PhDThe results of a systematic experimental investigation into the effects that Sub- Boundary Layer Vortex Generators (SBVGs) have on reducing normal shock-induced turbulent boundary layer separation are presented.
Cohen, Giel S, Cohen, Giel S.
core   +4 more sources

Conceptual Design of Layered Distributed Propulsion System to Improve Power-Saving Benefit of Boundary-Layer Ingestion

Aerospace
DPS (distributed propulsion system) utilizing BLI (boundary-layer ingestion) has shown great potential for reducing the power consumption of sustainable AAM (advanced air mobility), such as BWB (blended-wing body) aircraft.
Zhiping Li, Yujiang Lu, Tianyu Pan
doaj   +1 more source

Momentum- and Energy-Based Analyses of the Aerodynamic Effects of Boundary Layer Ingestion and Propulsion–Airframe Integration on a Blended Wing Body–Turbofan Configuration

Aerospace
Boundary layer ingestion (BLI) propulsion offers notable benefits for blended wing body (BWB) aircraft, and understanding the interrelated effects of BLI and propulsion–airframe integration (PAI) is critical for early-stage design decisions.
Gang Wang, Dong Li, Peifeng Li, Binqian Zhang   +3 more
doaj   +1 more source

Optimization of a transonic axial-flow compressor under inlet total pressure distortion to enhance aerodynamic performance

Engineering Applications of Computational Fluid Mechanics, 2020
In a boundary layer ingestion (BLI) propulsion system, the compressor rotor operates under the condition of a severe inflow distortion because the boundary layers on the surface of aircraft have been ingested.
Li Da, Lu Hanan, Yang Zhe, Pan Tianyu, Du Hai, Li Qiushi   +5 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

FEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise, Tiziano Mazza, Raffaella Scanga, Lara Console, Michele Galluccio, Cesare Indiveri   +5 more
wiley   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source