000004261 001__ 4261
000004261 005__ 20141118185753.0
000004261 04107 $$acze
000004261 046__ $$k2005-05-31
000004261 100__ $$aGupta, A.
000004261 24500 $$aPlume dispersion on the roof of a building: Influence of rooftop structure geometry

000004261 24630 $$n10.$$pProceedings of the Tenth Americas Conference on Wind Engineering
000004261 260__ $$bAmerican Association for Wind Engineering, 2005
000004261 506__ $$arestricted
000004261 520__ $$2eng$$aA wind tunnel study was carried out to study the influence of rooftop structure (RTS) width and orientation on plume dispersion for a stack located in the wake of the rooftop structure. The study focused on low-rise buildings because RTS have maximum effect on low-rise buildings. SF6 was used as a tracer gas to simulate the exhaust coming out of the stack whose height varied from 1 to 5 m. The downwash effect of RTS was examined for widths (w) varying from 0.2 to 0.6 times the width (W) of the windward face of the emitting building. The height (h) of RTS varied from 0.2 to 0.4 times the height (H) of the emitting building. To examine the effect of orientation wind tunnel experiments were carried out for wind directions varying from 0 to 60 degrees. For normal winds (wind direction = 0 degree), the plume centerline concentrations were found to be maximum for the widest RTS. Maximum downwash and concentrations were observed for a wind direction of 45 degrees. The current ASHRAE [1] plume dispersion models were also evaluated. 

000004261 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004261 653__ $$a

000004261 7112_ $$aTenth Americas Conference on Wind Engineering$$cBaton Rouge, Louisiana (US)$$d2005-05-31 / 2005-06-04$$g10ACWE
000004261 720__ $$aGupta, A.$$iSaathoff, P.$$iStathopoulos, T.
000004261 8560_ $$ffischerc@itam.cas.cz
000004261 8564_ $$s83061$$uhttps://invenio.itam.cas.cz/record/4261/files/094-Gupta.pdf$$yOriginal version of the author's contribution as presented on CD, , paper No. 094.
000004261 962__ $$r4178
000004261 980__ $$aPAPER