KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 1 Building Simulations - CFD Examples Kjeld Svidt Aalborg University
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 2 Focus on attached ceiling jet Jet velocity characteristics described by velocity decay constant and virtual origin of jet (isothermal flow only) Penetration depth of cold jet attached to the ceiling –10, 15 and 30 mm slot opening – T approximately 10 and 20 °C –many pressure differences
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 3 Non-isothermal measurements Penetration depth: 55 experiments with different opening size, pressure difference and temperature difference
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 4 Non-isothermal measurements Penetration depth: 55 experiments with different opening size, pressure difference and temperature difference
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 5 Computerberegning af luftbevægelser
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 6
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 7
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 8
KJELD SVIDT, AALBORG UNIVERSITY CFD Model of Incineration Hall, Amagerforbrænding 67 m 50 m 21 m Displacement Ventilation Supply Case C-D Outdoor Air Supply Case E-H
KJELD SVIDT, AALBORG UNIVERSITY Comparison between Calculated and Measured Results - Amagerforbrænding Vertical Plane at Incineration Line Fill Temperature 52 o C 46 o C 40 o C 34 o C 28 o C 22 o C 16 o C 10 o C 35 o 43 o 34 o o o 53 o
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 11 Strømningsforhold - lokale strømninger omkring personer
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 12 Simulering af termiske mannequinner (1) Kilde: Erik Bjørn
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 13 Simulering af termiske mannequinner (2) Kilde: Erik Bjørn
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 14 Simulering af termiske mannequinner (3) Kilde: Erik Bjørn
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 15 Simulering af termiske mannequinner (4) Kilde: Erik Bjørn
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 16 Strømning omkring bygninger
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 17 Strømning omkring bygninger - åbning i kip, staldbygning
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 18 Kyllingestald opført gulvareal ca m udsugningsventilatorer i taget - samlet luftydelse m 3 /h Luftindtag i ydervæg
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 19 Computersimulering af strømningsforhold. Laboratorieopstilling med spaltegulv over gyllekanal.
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 20 Detaljer af spaltegulv og beregnede strømningsforhold
KJELD SVIDT, AALBORG UNIVERSITY Building Simulations - CFD 21 Elementer med en kompliceret geometri ønskes beskrevet som mere enkle elementer af hensyn til computerkraften