Journal article Open Access

CFD Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots

K. Vasudeva Karanth; N. Yagnesh Sharma


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  <identifier identifierType="DOI">10.5281/zenodo.1071632</identifier>
  <creators>
    <creator>
      <creatorName>K. Vasudeva Karanth</creatorName>
    </creator>
    <creator>
      <creatorName>N. Yagnesh Sharma</creatorName>
    </creator>
  </creators>
  <titles>
    <title>CFD Analysis of a Centrifugal Fan for Performance Enhancement using Converging Boundary Layer Suction Slots</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2009</publicationYear>
  <subjects>
    <subject>Boundary layer suction converging slot</subject>
    <subject>Flowseparation</subject>
    <subject>Sliding mesh</subject>
    <subject>Unsteady analysis</subject>
    <subject>Recirculation zone</subject>
    <subject>Jetsand wakes.</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2009-12-23</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="JournalArticle"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/1071632</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.1071631</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/waset</relatedIdentifier>
  </relatedIdentifiers>
  <version>8833</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">Generally flow behavior in centrifugal fan is observed
to be in a state of instability with flow separation zones on suction
surface as well as near the front shroud. Overall performance of the
diffusion process in a centrifugal fan could be enhanced by
judiciously introducing the boundary layer suction slots. With easy
accessibility of CFD as an analytical tool, an extensive numerical
whole field analysis of the effect of boundary layer suction slots in
discrete regions of suspected separation points is possible. This paper
attempts to explore the effect of boundary layer suction slots
corresponding to various geometrical locations on the impeller with
converging configurations for the slots. The analysis shows that the
converging suction slots located on the impeller blade about 25%
from the trailing edge, significantly improves the static pressure
recovery across the fan. Also it is found that Slots provided at a
radial distance of about 12% from the leading and trailing edges
marginally improve the static pressure recovery across the fan.</description>
    <description descriptionType="Other">{"references": ["Boyce, M.P., Gas Turbine Engineering Hand Book, Gulf Professional\nPublishing, Third Edition, USA, 2006, pp. 238 - 239.", "Reacock, R. E., \"Boundary-Layer Suction to Eliminate Corner\nSeparation in Cascades of Aerofoils\", Research report, University\nEngineering Department, Cambridge, 1965.", "Khan, M.M.S., Cornelius, K.C. and Tassa, Y., \"Effect of suction on\nboundary-layer flow over a 2-D slot\", American Institute of Aeronautics\nand Astronautics, Aerospace Sciences Meeting, 20th, Orlando, FL, Jan.\n11-14, 1982, 11 p", "Seal, C.V. and Smith, C.R., \"The control of turbulent end-wall boundary\nlayers using surface suction\", Experiments in Fluids, Springer\nPublications, Volume 27, Number 6 , November, 1999, pp. 484-496", "Raghunathan, S. and Cooper, R.K., \"Passive Boundary Layer Control\nwith Slots in Short Diffusers\", ASME Journal of Fluids Engineering, 3,\nVol. 122, 2000, pp. 177-179.", "Wursthorn, S. and Schnerr, G.H., \"Numerical investigations of\ncavitation control in pumps\", Journal of Applied Mathematics and\nMechanics, vol. 80, 2000, pp. S663-S664", "Hubrich, K., Bolcs, A. and Ott, P., \"Boundary Layer Suction via a Slot\nin a Transonic Compressor: Numerical Parameter Study and First\nExperiments\", Proceedings of ASME Turbo Expo 2004 Power for Land,\nSea, and Air GT2004-53758, 2004, Austria", "Shojaefard, M.H., Noorpoor, A.R, Avanesians, A. and Ghaffarpour, M.,\n\"Numerical Investigation of Flow Control by Suction and Injection on a\nSubsonic Airfoil\", American Journal of Applied Sciences, Science\nPublications, 2 (10), 2005, pp. 1474-1480.", "Atik, H., Kim, C.Y., Van-Dommelen, L. and Walker, J.D.A.,\n\"Boundary-layer Separation Control on a Thin Airfoil using Local\nSuction\", Journal of Fluid Mechanics Cambridge University Press, 535\n, 2005, pp. 415-443.\n[10] Gajjar, J.S.B. and Smith, F.T., \"Vortices and flow reversal due to suction\nslots\", Philosophical Transactions of the Royal Society, Vol. 363, No.\n1830, 2005, pp. 1199 - 1208.\n[11] Dovgal, A. and Sorokin, A., \"Application of flow suction for controlling\nthe shedding of large-scale vortices at boundary-layer separation\",\nJournal of Applied Mechanics and Technical Physics, Volume\n47, Number 4, 2006, pp. 510-514\n[12] Song, Y., Chen, F., Yang J. and Wang, Z., \"A Numerical Investigation\nof Boundary Layer Suction in Compound Lean Compressor Cascades\",\nASME Journal of Turbomachinery, 5, Volume 128, Issue 2, 2006, pp.\n357 - 366.\n[13] Atik, H. and van Dommelen, L., \"Autogenous Suction to Prevent\nLaminar Boundary-Layer Separation\". Journal of Fluids Engineering 1,\nVol. 130, Issue 1, 2008, 011201 (8 pages)\n[14] Gbadebo, S.A., Cumpsty, N.A. and Hynes T.P., \"Control of Three-\nDimensional Separations in Axial Compressors by Tailored Boundary\nLayer Suction\", ASME Journal of Turbomachinery , 1, Volume 130,\nIssue 1, 2008, 011004 (8 pages)\n[15] Fatsis, A., Pierret, S. and Van den Braembussche, R., \"Threedimensional\nunsteady flow and forces in centrifugal impellers with\ncircumferential distortion of the outlet static pressure\", ASME Journal of\nTurbomachinery, 119, 1997, pp. 94-102.\n[16] Sorokes, J.M., Borer, J.C. and Koch, J.M., \"Investigation of the\ncircumferential static pressure non-uniformity caused by centrifugal\ncompressor discharge volute\", 98 GT 326, International Gas Turbine &amp;\nAeroengine Congress &amp; Exhibition, Stockholm, 1998, Sweden,\n[17] Hillewaert, K. and Van den Braembussche, R.A., \"Numerical simulation\nof impeller-volute interaction in centrifugal compressors\", ASME\nJournal of Turbomachinery, 121, 1999, pp. 603-608.\n[18] Shi, F. and Tsukamoto, H., \"Numerical Study of Pressure Fluctuations\nCaused by Impeller-Diffuser Interaction in a Diffuser Pump Stage\",\nTransactions of the ASME, 9, Vol. 123, 2001, pp. 466 - 474.\n[19] Sofiane, K., Sma\u00efne, K., Farid, B. and Robert, R., \"Flow Study in the\nImpeller-Diffuser Interface of a Vaned Centrifugal Fan\", ASME Journal\nof Fluid Engineering, 5, vol. 127, 2005, pp. 495 - 502.\n[20] Meakhail, T. and Par,k S.O., \"A Study of Impeller-Diffuser-Volute\nInteraction in a Centrifugal Fan\", ASME Journal of Turbo machinery,\n127, 2005, pp. 84 - 90.\n[21] Fluent 6.3, Fluent Inc., 2006.\n[22] Patankar, S.V., Numerical Heat Transfer and Fluid Flow, Tailor and\nFrancis, 1980, pp. 90-92."]}</description>
  </descriptions>
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