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Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook Yoon @CEDIC
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Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Mar 24, 2019

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Page 1: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Wind Mapping of

Singapore by WindSim

LEE JIA HUA @NUS

Supervised by

Dr. Hyun-Goo Kim @KIER

Collaborated by

Dr. Wan-Ho Jeon @CEDIC

Mr. Seong-Wook Yoon @CEDIC

Page 2: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook
Page 3: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

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

Page 4: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Wind Characteristics

Low wind speed for most neighboring countries

South-eastern side consists mainly of water bodies

Page 5: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Identify suitable sites with higher wind energy concentration for installation of wind turbine

Serve a purpose of indicating candidate sites where more 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?

Page 6: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

About the Project

Highly urbanized city with 56931 buildings

Almost impossible to do a CFD simulation on each and every single buildings

Page 7: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

z

d

Urban Canopy

zo

oz

dzuzU ln)( *

Page 8: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

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,

Page 9: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Urban Canopy Models

Page 10: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Sectors divided based on building density and land use

104 sectors were identified but reduced to 47 sectors zo d

Ap, Af H

Page 11: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Changi 3TIER

Climatology

Page 12: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

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)

Page 13: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

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

Page 14: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Transferred Climatology

Changi Airport In-situ data

Design wind data are required here

Problem: Wind data is needed at point 2 No wind data or measurement equipment data available at point 2 Solution: The transferred climatology data obtained from the initial wind map is able

to provide an estimate of the wind conditions at that particular site

1

2

Page 15: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Wind Environmental Impact

Page 16: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Validation of MacDonald Eqn.

Page 17: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Wind Flow over a Urban Sector

Wind flow simulation for wind direction of NW

Page 18: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

Areal-Averaged Wind Profile

1

10

100

1000

0 1 2 3 4 5 6

Heig

ht

ab

ov

e g

rou

nd

, ln

(z)

Areal-averaged wind speed (m/s)

― CFD fitting ― Empirical Eqn.

Areal-averaging of wind speed at 50m a.g.l.

Page 19: Wind Mapping of Singapore by WindSim · Wind Mapping of Singapore by WindSim LEE JIA HUA @NUS Supervised by Dr. Hyun-Goo Kim @KIER Collaborated by Dr. Wan-Ho Jeon @CEDIC Mr. Seong-Wook

THANK YOU

Email: [email protected]

Contact number: +65 92975450 (Singapore)