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Shape Optimization of the Diffuser with Inlet Circumferential Velocity Component

Project goals

Design of the optimum diffuser shape for the flow with circumferential velocity component to achieve maximum pressure recovery. Design is based on methods of mathematical optimization and theoretical investigation of the flow structure and stability. Final solution is experiemntally verified. Obtained results are valuable for design of fluid elements and machines.

Keywords

diffuseroptimizationvortex

Public support

  • Provider

    Czech Science Foundation

  • Programme

    Post-graduate (doctorate) grants

  • Call for proposals

    Postdoktorandské granty 6 (SGA02006GA1PD)

  • Main participants

    —

  • Contest type

    VS - Public tender

  • Contract ID

    101/06/P190

Alternative language

  • Project name in Czech

    Tvarová optimalizace difuzoru se vstupní obvodovou složkou rychlosti

  • Annotation in Czech

    Návrh optimálního tvaru površky difuzoru pro proudění s obvodovou složkou rychlosti tak, aby byla dosažena maximální regenerace tlaku. Návrh je založen na metodách matematické optimalizace a teoretické analýze struktury a stability proudění. Výsledné řešení je experimentálně ověřeno. Získané poznatky jsou využitelné pro návrh tekutinových prvků a strojů.

Scientific branches

  • R&D category

    ZV - Basic research

  • CEP classification - main branch

    BK - Liquid mechanics

  • CEP - secondary branch

    JE - Non-nuclear power engineering, energy consumption and utilization

  • CEP - another secondary branch

    —

  • 10305 - Fluids and plasma physics (including surface physics)
    20704 - Energy and fuels

Completed project evaluation

  • Provider evaluation

    U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)

  • Project results evaluation

    Grant project was focused on study of the swirling flow in a diffuser to enhance its efficiency. Both experiment and computational modeling identified the region of high energy dissipation in the backflow zone on the diffuser inlet where vortex rope is c

Solution timeline

  • Realization period - beginning

    Jan 1, 2006

  • Realization period - end

    Dec 31, 2008

  • Project status

    U - Finished project

  • Latest support payment

    Apr 25, 2008

Data delivery to CEP

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

  • Data delivery code

    CEP09-GA0-GP-U/03:3

  • Data delivery date

    Jan 22, 2015

Finance

  • Total approved costs

    997 thou. CZK

  • Public financial support

    997 thou. CZK

  • Other public sources

    0 thou. CZK

  • Non public and foreign sources

    0 thou. CZK

Basic information

Recognised costs

997 CZK thou.

Public support

997 CZK thou.

100%

Provider

Czech Science Foundation

CEP

BK - Liquid mechanics

Solution period

01. 01. 2006 - 31. 12. 2008

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Application of adaptive multilevel methods and domain decomposition methods to fluid flow and nonlinear elasticity (GA106/05/2731) Modelling of Turbulent Flow on a Rough Wall (GA101/93/1011) Effect of complex boundary conditions on the laminar/turbulent transition (GAP101/12/1271)