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Novel Techniques in Wind Engineering Horia HANGAN
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Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

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Page 1: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Novel Techniques in Wind Engineering

Horia HANGAN

Page 2: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

INTRODUCTION

Pielke Jr. (1997):

minimize Vulnerability = f (Incidence, Exposure)

Incidence = f (Intensity, Occurrence, Frequency)

Exposure = f (Population, Property, Preparedness)

Page 3: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

SUMMARY• New Laboratory: Novel WindEEE experiments

– Non-Synoptic Winds: Tornadoes, Downbursts

– New Flow and Structural Analysis

– Topography and Canopy Effects

– Multiscale Experiments: Wind Turbines, Solar Panels

– Measurement Techniques: Particle Tracking

• New Numerical: Multiple Space and Time Scales

– Mesoscale: WARF, Reanalysis

– Microscale: Urban wind environment

• New Full Scale: Real Space-Time Data

– Mobile Doppler Radar

– LiDAR

Climate

PDF, Vg, Vgr

ABL

V(z), Iu(z), S(f)

Aerodynamics

p(x,t)

Structural Response

x,a,M,F

Page 4: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

LABORATORY

• WindEEE Dome : new three dimensional and time-dependent wind chamber

• can simulate various wind systems from sheared winds and gust fronts to tornadoesand downbursts

• a multi-scale, multi-purpose facility for wind research

The Wind Engineering Energy and Environment (WindEEE) Dome

www.windeee.ca

Page 5: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Preliminary Design

straight/sheared flow tornado flow downburst flow

Page 6: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Engineering Design

• 106 individually controlled fans

• 2 MW maximum power

• 5 m lift and turntable

• 1600 floor roughness elements

• 1000+ tons of steel

• 1850 m³ of concrete

• LEEDs Silver accreditation

Page 7: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Research Ready

Six Initial Design Specifications:

- Straight Mode Uniform- Straight Mode Boundary Layer- Straight Mode Shear- Tornado- Downburst- Reversed Flow Mode

+ HH 7

Page 8: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Tornado Research

M. Refan, D. Parvu, H. Hangan – ICWE14

Page 9: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Tornado Research

Page 10: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Data Analysis: Velocity Correlations

Fan

an

gle

10

°Fa

n a

ngl

e 2

Fan

an

gle

30

°

Height 0.035 m

0.045 m 0.070 m 0.080 m 0.150 m

vu

jiji vvuunCorrelatio

,,

R. Ashton, M. Refan, H. Hangan, G. V. Iungo

Page 11: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Data Analysis: Independent component analysis

L. Carassale, M. Refan, H. Hangan

Page 12: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Tornado Research

(a)

(b)

(c)

(d)

(e)

(f)

• Generic Industrial and Hospital building shapes

• Tests in BLWTL and WindEEE

• Determine the loading differences

M. Refan, H. Hangan

Page 13: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Downburst Research

D. Parvu, A. Costache, H. Hangan – ICWE 14

Page 14: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Downburst Research

- Downburst TL Interaction- H/D < 1; H/D > 1- Roughness Effects- ElDamatty, Bitsuamlak,

Savory, Hangan

A. ElDamatty, A. ElAwady – ICWE14

Page 15: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Wind-Structure: Thunderstorm Response Spectrum

eqf

eq d 0ˆf f S n ,

eq d,eq 1ˆ S n , , f f

SDOF system

NDOF system0.002

0.01

0.05 Solari et al., W&S, 2015

Solari et al., JWEIA, 2015

Solari & De Gaetano, ICWE14

time

sp

ee

d (

m/s

)

eq,Nf

eq,2f

eq,1f

N

2

1

Page 16: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Wind-Structure:Gust-Front Factor (GG-F)

Modeling and analysis of thunderstorm/downburst generated gust-front wind loads effect on structures

Web-enabled module to facilitate the use of the GFF framework

http://gff.ce.nd.edu

1) Kwon, D. K., and Kareem, A., "Gust-front factor: New Framework for Wind Load Effects on Structures." Journal of Structural Engineering, ASCE, 135(6), 717-732, 2009.

2) Kwon, D. K., Kareem, A. "Generalized gust-front factor: A computational framework for wind load effects." Engineering Structures, 48, 635-644, 2013.

Page 17: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Solar Panels Research Full-scale: ground and roof mounted solar array at WindEEE Dome

Page 18: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Solar Panels Research

Pressure + force balance + strain gauge testing

Z. Samani, G. Bitsuamlak, H. Hangan

Page 19: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

• located near Roskilde, Denmark

• 12 m high peninsula with steep escarpment

• shows topographical similarity to wind turbine sites in complex terrain

• provides meaningful test case for model validation

• comprehensive mast data available

WINDEEE : Topography – Bolund Experiment

Page 20: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

• 1/25 Scale Model

• Large Scale PIV: 2 x 1.5 meters

• 4 simultaneous cameras

• Window overlapping

• Several exposures

WINDEEE : Topography – Bolund Experiment

Page 21: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WINDEEE : Topography – Bolund Experiment

0

5

10

15

20

25

30

35

40

0 5 10 15 20

Fu

ll S

cale

Hei

gh

t (m

)

U (m/s), TI (%)

WindEEE (Mean velocity, U)

0

2

4

6

8

10

12

14

16

18

20

0 10 20 30F

ull

Sca

le H

eig

ht

(m)

s/u*

Full Scale Bolund DataWindEEE Data

Page 22: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

• Cameras 1 and 2

• Velocity Snapshots

WINDEEE : Topography – Bolund Experiment

Page 23: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WINDEEE : Canopy – PEI Experiment

Page 24: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WINDEEE : Canopy – PEI Experiment

Porosity based Forest Canopy Modeling

LAI (Leaf Area Index) measured indirect

Satellite data (MODIS)-> obtain LAI estimates

LAI distribution mapped over terrain

D. Parvu, H. Hangan

Page 25: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WINDEEE : Wake Experiment

Phase-Locked PIV measurements

8 azimuthal angles between 0 and 120

Two axial locations: x/R =1 and x/R =2

At each azimuthal angle 4 PIV tiles

P. Hashemi-Tari, K. Siddiqui, H. Hangan – Wind Energy (2015)

Page 26: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Wake Experiment

Radial profiles of axial deficit velocities at X=Rand X=2R for 8 azimuth angles of blade

Page 27: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Wake Experiment

Radial profiles of radial velocities at X=R and X=2R for 8 azimuth angles of blade

Page 28: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Wake Experiment

Radial profiles of Turbulence Intensity Streamlines of Instantaneous Velocity

Page 29: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Wake Experiment

Scaling Effects

Page 30: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

WindEEE: Particle Tracking Techniques

D. Parvu, A. Costache, M. Refan, H. Hangan – ICWE14

Page 31: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

NUMERICAL

WRF

Data Reanalysis

Urban Microscale CFD

Convective forcing modeling

1

2

34

Page 32: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: NCEP / NCAR Reanalysis

Kalnay et al (1996) data from 1948 to Dec. 2014

2.5° latitude by 2.5° longitude spatial resolution

bilinear interpolation method

4 times a day, daily, and monthly

Mean daily values for two wind components 67 years, 24473 data records

Page 33: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: Trend Data Analysis

Mean Annual Wind Speed per Direction

Mann-Kendall non-parametric test for trend (Mann, 1945; Kendall, 1970)

Sen’s slope estimator (Sen, 1968)

𝑆 =

𝑦1=1

𝑛−1

𝑦2=𝑦1+1

𝑛

𝑠𝑔𝑛 𝑥𝑦2 − 𝑥𝑦2 .

𝑌 = 𝑄 𝑦 − 1948 + 𝐵,

D. Romanic, H. Hangan-Sustainable Cities and Society (2015)

Page 34: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: Spectral Analysis

Low frequency wind spectra (blue line)

95% confidence intervals (grey line)

Welch method (Welch, 1967)

Sunspots: SILSO World Data Center, 1948

13-month moving average

applied on mean monthly wind speed data

σ.995 confidence level

Page 35: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: Urban Environment

WRF Nested run (4 domains)

~30 million cells

Chugach supercomputer 1024 cores

~20-30 min

Kraken supercomputer 576 cores

~ 120 min

CFD and downscaling ~3 million cells

~15 min

Total time ~< 1 hour

Page 36: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: Urban Environment

7.6% (9) (4) 5.8%

4.9 % (13)

12.3% (8) 9.6% (4)

Page 37: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Numerical Modeling: Downburst and Tornado

Page 38: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

FULL SCALE

ROTATE Campaign

Doppler on Wheels

GBDTV Analysis

Similarity Analysis

PEIWEE Campaign

LiDAR

Topography

Canopy

Wake

Page 39: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Recent Campaigns: ROTATE

Data provided by CSWR

ROTATE=Radar Observations of Tornadoes And Thunderstorms Experiment – 2012Ground-Based Velocity Track Display

Single-Doppler radar data of five tornadoes: Kellerville, TX 1995 (F4), Spencer, SD 1998 (F4), Stockton, Oklaunion, TX 2000 (F1), Stratford, TX 2003 (F0), KS 2005 (F1), Clairemont, TX 2005 (F0), Happy, TX 2007 (EF0) and Goshen County, WY 2009 (EF2)

Nine tornado volumes: cover wind speeds associated with EF0 to EF3 rated tornadoes

Elie, Manitoba tornado 2007

Bennington Kansas EF-4 tornado 2013

Page 40: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Tornadoes: GBDTV Analysis

DOW 3

Doppler velocity (m/s) contour map of the Happy, TX 2007 tornado at 0203:20

UTC and at 0.3˚ radar beam angle

r (m)

z(m

)

0 200 400 600 8000

200

400

600

800

1000

Vtan (m/s)

4038363432302826242220181614121086420

5

Page 41: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Tornadoes: Full Scale Data

Volume

Clairemont,

volume1

(Clr v1)

Happy,

volume1

(Hp v1)

Happy,

volume2

(Hp v2)

Goshen ,

volume1

(GC v1)

Goshen ,

volume2

(GC v2)

Goshen,

volume3

(GC v3)

Stockton,

volume1

(Stc v1)

Spencer,

Volume1

(Sp v1)

Spencer,

Volume2

(Sp v2)

EF EF0 EF1 EF0 EF1 EF1 EF1 EF2 EF3 EF3

zmin (m) 25 71 38 97 75 30 43 51 85

Vtrans (m/s) 1.2 19.4 19.4 9.49 9.49 9.49 10.95 15 15

Vtan,max

(m/s)36.3 39 37.9 41.6 42 42.9 50.2 58.2 62

rc (m) 96 160 160 150 150 100 220 192 208

zmax (m) 200 250 50 42 160 41 40 40 40

Vertical

structureVBA 1-cell TD 2-cell VBA 2-cell After TD 2-cell 2-cell

Page 42: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Tornadoes: Scaling

R (km)

Vta

n(m

/s)

0 0.2 0.4 0.6 0.8 10

10

20

30

40 z= 40 mz= 80 mz= 120 mz= 160 mz= 200 mz= 240 mz= 280 mz= 320 m

Goshen County , WY 2009 (EF2)

• The overall maximum

tangential velocity

Vtan,max = Vtan(rc,max, zmax)

• Length scale

rc,max,D/rc,max,S

zmax,D/zmax,Sλl=

r (km)

λv=

• Velocity scale

Vtan,max,D/Vtan,max,S

Page 43: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Tornadoes: Scaling

Hp v1 GC v2 Sp v2r (m)

Vta

n(m

/s)

0 200 400 600 800 10000

5

10

15

20

25

30

z=120mz=136mz=160mz=155mz=200mz=194m

r (m)

Vta

n(m

/s)

0 200 400 600 800 10000

5

10

15

20

25

30

z=200mz=216mz=250mz=247m

r (m)

Vta

n(m

/s)

0 200 400 600 800 10000

10

20

30

40

z=80mz=77mz=120mz=120mz=160mz=137m

Page 44: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Tornadoes: Scaling

Swirl ratio

Len

gth

scale

,

l

0 0.2 0.4 0.6 0.8 1 1.2 1.40

2000

4000

6000

Before touch-down After touch-down

Clr v1

Hp v1

Hp v2

Stc v1

GC v1

GC v2

GC v3Sp v1

Sp v2

Swirl ratio

Velo

city

scale

,

v

0 0.2 0.4 0.6 0.8 1 1.2 1.40

1

2

3

4

5

Hp v1

Clr v1

Hp v2

GC v1GC v2

GC v3

Sp v1

Sp v2Stc v1

Page 45: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

>F2

• Monte Carlo Simulations for 30,000 years

• Minimum Return Period = 4,000 years/sq.km

• Maximum in Oklahoma, Minimum in Nevada

>F4

• Monte Carlo Simulations for 18 million years

• Minimum Return Period = 16,700/sq.km95% F0, F1 and F2; Only 0.1% F5

F5=0.1*F4=0.02*F3=0.006*F2

Wind Incidence: Frequency

1921-1995 Data base by Grazulis (1993), Monte Carlo Simulations by Meyer et al. (2005)

Page 46: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

• Width increases with F scale

- Median F2 = 100 m

- Median F4 = 600 m

• Length increases with F scale

- Median F2 = 10 km

- Median F4 = 60 km

Wind Incidence: Width and Length

Page 47: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

Recent Campaigns: PEIWEE

• Cornell University:

– Two Lidars -> Zephyr and Gallion

• Western University (WindEEE RI and DTU):

– 1 Short Range Lidar

– 1 Quadropter

• Wind Energy Institute of Canada (WEICan):

– P.E.I site with 5 wind turbines

– Masts 80 m, 60 m, 17 m and 15 m

– 1 Zephyr Lidar

• York University:

– 6 masts of 10m

Page 48: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE: WindScanner short-range LiDAR

Page 49: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE: WindScanner short-range LiDAR

WindEEE WindScanner : short-range LiDAR

max. wind speed acquisition rate : 500 samples/s

Page 50: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE : Wake / Topography

• Line and flower pattern scanning

• Multiple heights : 10, 15, 20 , 40, 80 m

• Multiple tilt angles : 0°, 30°, 60° and 90°

• Multiple wind directions : S to W

Page 51: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE : Cliff Measurements

Page 52: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE : Forest Edge Measurements

Page 53: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

PEIWEE : Wake Measurements

Page 54: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.
Page 55: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

DISCUSSION

Climate• Meso-scale Models + Full Scale: set proper boundary conditions

Terrain• Micro-scale Models + Full Scale: run simulations in the surface layer

Stats• Statistical Analysts: set incidence models

Wind3D• Wind Fields: 3D and Time-Dependent; Multiscale

Loads • Aerodynamic Loads: Loads = f(buildings/structures, exposure)

Response • Structural Analysis: Responses to Loads; Collapse modes

Page 56: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

CONCLUSIONS

• New Tools for the Wind Engineering Chain • New Laboratory

Climate: ABL vs. Non-Synoptic Winds-> Flow Fields Topography and Roughness -> Reynolds and 3D effects Aerodynamic Loading-> Comparison of ABL vs. Non-Synoptic Analysis Techniques-> Spectral vs. Time-Domain vs. Modal Statistical Analysis

• New Full Scale– Doppler Radar + GBDTV; LiDAR

• New NumericalRe-Analysis, Meso-Micro coupling, Physical Simulations

Page 57: Novel Techniques in Wind Engineering - Western University - Keynote ICWE 2015.pdf · M. Refan, H. Hangan. WindEEE: Downburst Research D. Parvu, A. Costache, H. Hangan –ICWE 14.

REFERENCES

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