1106 WindSim UM KIER Hyun-Goo2
Transcript of 1106 WindSim UM KIER Hyun-Goo2
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Singapore
Land area: 710.3 sq km (Seoul 606, Kobe 552) Total population: 4.988 million (Seoul 10.5, Kobe 1.5)
Population density: 7022 per sq km (Seoul 17327, Kobe 2717) 23% of land area covered with forest and nature reserves
Top 1 busiest port in the world (Busan 5, FY2007) Major industries: Shipping, banking, tourism, electrical & electronics,
chemicals and oil refining
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Wind Characteristics
Low wind speed for most neighboring countries
South-eastern side consists mainly of water bodies
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Identify suitable sites with higher wind energyconcentration for installation of wind turbine
Serve a purpose of indicating candidate sites wheremore measurements could be carried out
Low-speed wind turbine or BIWT
Biological and chemical defense
Urban planning works Wind Engineering Application
Why a Singapore Wind Map?
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About the Project
Highly urbanized city with 56931 buildings
Almost impossible to do a CFD simulation on eachand every single buildings
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z
d
Urban Canopy
zo
o z
d z u z U ln)( *
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Effect of Urban Canopy
Packing density may affect the value of d and Identify 2 areas with similar mean building height
but different packing density
Identify a relationship between packing density,
mean building height and d,
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Urban Canopy Models
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Sectors divided based on building density and land use
104 sectors were identified but reduced to 47 sectorszo d
A p, A f H
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Changi 3TIER
Climatology
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Wind Resource Map
Fine resolution of 90m by 90m (SRTM)
Simulated 3D wind field covering Singapore
Able to extract wind speed at any height you want(transfer climatology)
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Wind resource was very poor as expected
Nevertheless, wind map is valuable information Transferred climatology offers wind design data
Wind environments around the Singapore Flyer etc.
Urban canopy model is to be more developed Validation of MacDonald eqns. with real urban layouts
Consideration of forest model but tuning is required
Conclusion & Future Plans
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Wind Environmental Impact
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Validation of MacDonald Eqn.
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Wind Flow over a Urban Sector
Wind flow simulation
for wind direction of NW
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Areal-Averaged Wind Profile
1
10
100
1000
0 1 2 3 4 5 6
H e i g h t a b o v e
g r o u n d , l n
( z )
Areal-averaged wind speed (m/s)
― CFD fitting ― Empirical Eqn.
Areal-averaging of wind speed
at 50m a.g.l.
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THANK YOU
Email: [email protected]
Contact number: +65 92975450 (Singapore)