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  • Heat and mass transfer from gas to wall is limited by a thin stagnant layer held on the surface by viscisity across which the transport takes place by much less efficient conductive mechanism. Authors achieved increasing the heat and mass transfer destroying the layer by an impinging jet modulated by an electrically driven loudspeaker. The required power depends on a flow regime, the minimum power required occurs in a bistable annular jet sensitised by to its undergoing a transition between different flow topologies. 5 different topological configurations OF the flow were found in the experiments - hot wire anemometric traverses- supported by numerical CFD solutions. Utilising the optimal regime more than 3-times increase in fluctuating velocity nearthe wall due to the excitation was obtained, which involves also an increase in turbulent convection.
  • Heat and mass transfer from gas to wall is limited by a thin stagnant layer held on the surface by viscisity across which the transport takes place by much less efficient conductive mechanism. Authors achieved increasing the heat and mass transfer destroying the layer by an impinging jet modulated by an electrically driven loudspeaker. The required power depends on a flow regime, the minimum power required occurs in a bistable annular jet sensitised by to its undergoing a transition between different flow topologies. 5 different topological configurations OF the flow were found in the experiments - hot wire anemometric traverses- supported by numerical CFD solutions. Utilising the optimal regime more than 3-times increase in fluctuating velocity nearthe wall due to the excitation was obtained, which involves also an increase in turbulent convection. (en)
Title
  • Increasing Transport Coefficients of Convective Processes by Flow Modification
  • Increasing Transport Coefficients of Convective Processes by Flow Modification (en)
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  • Increasing Transport Coefficients of Convective Processes by Flow Modification
  • Increasing Transport Coefficients of Convective Processes by Flow Modification (en)
skos:notation
  • RIV/68407700:21220/02:02076812!RIV/2003/GA0/212203/N
http://linked.open.../vavai/riv/strany
  • 668;669
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA101/99/0059), P(GA101/99/0060)
http://linked.open...vai/riv/dodaniDat
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http://linked.open.../riv/druhVysledku
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  • 648695
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21220/02:02076812
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • acoustic excitation; annular impinging flow; hot wire anemometry; turbulence (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [344821CA528B]
http://linked.open...v/mistoKonaniAkce
  • Praha
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  • Praha
http://linked.open...i/riv/nazevZdroje
  • Proceedings of Workshop 2002
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http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...ocetUcastnikuAkce
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http://linked.open...vavai/riv/projekt
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http://linked.open...iv/tvurceVysledku
  • Tesař, Václav
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • České vysoké učení technické v Praze
https://schema.org/isbn
  • 80-01-02511-X
http://localhost/t...ganizacniJednotka
  • 21220
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