Numerical simulation of smoke natural filling in ultra-thin and tall atrium
In this paper, the natural filling law of smoke in ultra-thin and tall atrium was studied by means of numerical simulations. The results show that, the axial plume velocity of the ultra-thin and tall atrium has a good exponential function dependence on the Q˙1/3z−1/3, and the axial plume temperature rise has a good power function dependence on the Q˙2/3z−5/3. When the cross-sectional shape is circle, the plume moves faster, while the cross-sectional shape has little effect on the axial plume temperature rise far from the fire source. Area-height-squared ratio (A/H2) has a little influence on the axial plume velocity in the atrium for A/H2<0.06. The axial plume temperature rise increases with the increase of the A/H2 when the height (z) is lower than 20 m, while the axial plume temperature rise decreases with the increase of the area-height-squared ratio at z < 30 m..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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| Enthalten in: |
Case Studies in Thermal Engineering - 28(2021), Seite 101521- |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jiuzhu Wang [VerfasserIn] |
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| Links: |
doi.org [kostenfrei] |
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| Themen: |
Axial plume temperature rise |
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| doi: |
10.1016/j.csite.2021.101521 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
DOAJ048798010 |
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| 520 | |a In this paper, the natural filling law of smoke in ultra-thin and tall atrium was studied by means of numerical simulations. The results show that, the axial plume velocity of the ultra-thin and tall atrium has a good exponential function dependence on the Q˙1/3z−1/3, and the axial plume temperature rise has a good power function dependence on the Q˙2/3z−5/3. When the cross-sectional shape is circle, the plume moves faster, while the cross-sectional shape has little effect on the axial plume temperature rise far from the fire source. Area-height-squared ratio (A/H2) has a little influence on the axial plume velocity in the atrium for A/H2<0.06. The axial plume temperature rise increases with the increase of the A/H2 when the height (z) is lower than 20 m, while the axial plume temperature rise decreases with the increase of the area-height-squared ratio at z < 30 m. | ||
| 650 | 4 | |a Ultra-thin and tall atrium | |
| 650 | 4 | |a Axial plume velocity | |
| 650 | 4 | |a Axial plume temperature rise | |
| 650 | 4 | |a Influencing factor | |
| 653 | 0 | |a Engineering (General). Civil engineering (General) | |
| 700 | 0 | |a Cuifeng Du |e verfasserin |4 aut | |
| 700 | 0 | |a Hao Zhang |e verfasserin |4 aut | |
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