Sökning: "leading edge"

Visar resultat 11 - 15 av 108 avhandlingar innehållade orden leading edge.

  1. 11. Enabling technologies for scalable graphene electronics

    Författare :Naveen Shetty; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; edge contact; Hall effect; graphene; 2d-tech; array; 1 f; metrology;

    Sammanfattning : This thesis addresses the challenges in scaling up graphene-based technologies, with a focus on the epitaxial growth of graphene (epigraphene) over SiC substrates and the establishment of reliable low-contact resistance electrical contacts. The scalable graphene growth and contact fabrication have enabled the development of three epigraphene-based devices, including large-scale Quantum Hall Arrays, highly sensitive Hall effect magnetometers with minimal noise, and quantum-limited ultraviolet (UV) detectors. LÄS MER

  3. 12. Managing cloud resource scarcity

    Författare :Lars Larsson; Erik Elmroth; Cristian Klein; Philipp Leitner; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cloud computing; edge computing; kubernetes; federation; scheduling; quality elasticity;

    Sammanfattning : According to the Infrastructure-as-a-Service conceptualization of cloud computing, Infrastructure Providers offer utility-like pay-as-you-go access to computing resources (e.g., data processing, networks, and storage) to Service Providers, who use those resources to host applications for the benefit of end users. LÄS MER

  4. 13. Advances in vortical flow prediction methods for design of delta-winged aircraft

    Författare :Simone Crippa; Arthur Rizzi; James Luckring; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; delta wing; slender wing; aircraft; vortex; VFE-2; CAWAPI; HISAC; Vehicle engineering; Farkostteknik;

    Sammanfattning : This thesis covers the field of vortex-flow dominated external aerodynamics. As part of the contribution to the AVT-113 task group it was possible to prove the feasibility of high Reynolds number CFD computations to resolve and thus better understand the peculiar dual vortex system encountered on the VFE-2 blunt leading edge delta wing at low to moderate incidences. LÄS MER

  5. 14. A new experimental setup for studies on wake flow instability and its control

    Författare :Bengt Fallenius; Jens Fransson; Henrik Alfredsson; Christoffer Norberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid mechanics; Strömningsmekanik;

    Sammanfattning :  A new experimental setup for studies on wake flow instability and its control, which has been designed and manufactured, is introduced and described. The main body is a dual-sided flat plate with an elliptic leading edge and a blunt trailing edge. LÄS MER

  7. 15. Optimisation and control of shear flows

    Författare :Antonios Monokrousos; Dan S. Henningson; Laurette Tuckerman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shear flows; flow control; optimal disturbances; Lagrange method; transition to turbulence; non-linear dynamics; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : Transition to turbulence and flow control are studied by means of numerical simulations for different simple shear flows. Linear and non-linear optimisation methods using the Lagrange multiplier technique are employed. LÄS MER