Measurement of Vehicle Cooling Fan Air Flow using Laser Doppler Anemometry

Visa enkel post
dc.contributor.authorEnglén, David
dc.contributor.departmentChalmers tekniska högskola / Institutionen för mekanik och maritima vetenskapersv
dc.contributor.departmentChalmers University of Technology / Department of Mechanics and Maritime Sciencesen
dc.date.accessioned2019-07-03T14:52:00Z
dc.date.available2019-07-03T14:52:00Z
dc.date.issued2018
dc.description.abstractWhen a combustion engine in a vehicle is operating it generates large amount of heat. Therefore it is crucial to provide cooling in the engine bay to prevent components from overheating. The axial fan in the front of the engine bay is a very import component of the cooling procedure, since it drives fresh air through the heat exchangers into the engine bay. To study the behaviour of the cooling air ow in the engine bay, numerical simulations are commonly used today, but in order to verify and develop numerical tools, physical testing is needed. In this thesis, LDA has been used to investigate how the actual ow eld behaves in the wake of a circular cylinder and the cooling fan used in a Volvo V40. Laser Doppler Anemometry, LDA is a non-intrusive optical technique used for velocity measurements of turbulent and laminar ows. The measurements were performed in the model scale wind tunnel at Volvo Cars. From the cylinder measurements, the performance of the experimental equipment could be con rmed to yield precise results. The downstream ow behaviour of the fan was investigated for cases with different contributions of wind tunnel velocity and fan rotation speed. Results of the downstream velocity eld in all three directions are presented at different distances downstream of the fan. Furthermore, the in uence of the mesh resolution on the measured velocity elds is shown and discussed. Lastly, a spectral analysis of the vortex shedding downstream the blade span was performed.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/255823
dc.language.isoeng
dc.relation.ispartofseriesMaster's thesis - Department of Mechanics and Maritime Sciences : 2018:50
dc.setspec.uppsokTechnology
dc.subjectStrömningsmekanik och akustik
dc.subjectGrundläggande vetenskaper
dc.subjectInnovation och entreprenörskap (nyttiggörande)
dc.subjectTransport
dc.subjectFluid Mechanics and Acoustics
dc.subjectBasic Sciences
dc.subjectInnovation & Entrepreneurship
dc.subjectTransport
dc.titleMeasurement of Vehicle Cooling Fan Air Flow using Laser Doppler Anemometry
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeApplied mechanics (MPAME), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
255823.pdf
Storlek:
32.53 MB
Format:
Adobe Portable Document Format
Beskrivning:
Fulltext
Ladda ner
Samling
Examensarbeten för masterexamen