Simulation of an Air Flow between Cooling Fins

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Ala-Juusela, Juhaveikko 2016-12-13T10:02:04Z 2016-12-13T10:02:04Z 2001
dc.description MEMO No CFD/THERMO-38-2001 Date: 2nd October 2001
dc.description.abstract Abstract: The flow between the cooling fins of the ABB HXR 400L electric motor was simulated numerically by calculating one fin space and its surroundings. FINFLO flow solver, developed at Helsinki University of Technology, was used in the simulations. For the turbulence modelling k-ω and Chien's low-Reynolds number k-ε models were utilized. Main result: A suitable grid with 605 000 cells was introduced. Turbulence model affected significantly to the computational results. The k-ω model was used as a basic alternative. Results obtained are qualitative, but comparison with measurements is needed. According to the calculations, turbulent viscosity is also created in low-speed areas where one would expect laminar flow. This viscosity is a driving force for the secondary entrainment flow. The k-ε model created large amounts of turbulent viscosity in the secondary flow area, and the resulting flowfield was clearly unphysical. en
dc.format.extent 25
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Aalto University en
dc.publisher Aalto-yliopisto fi
dc.subject.other Mechanical engineering en
dc.title Simulation of an Air Flow between Cooling Fins en
dc.type J Muu elektroninen julkaisu fi Teknillinen korkeakoulu fi Helsinki University of Technology en
dc.contributor.department Sovelletun termodynamiikan laboratorio fi
dc.contributor.department Laboratory of Applied Thermodynamics en
dc.subject.keyword FINFLO en
dc.subject.keyword k-ε-model en
dc.subject.keyword k-ω-model en
dc.subject.keyword cooling fin en
dc.identifier.urn URN:NBN:fi:aalto-201612125899
dc.type.dcmitype text en

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