What is CODASC?
CODAS
C stands for "COncentration DAta of Street Canyons". It is a data base containing concentration measurement data of street canyons with avenue-like tree planting.

What is the purpose of CODASC?
The purpose of CODAS
C is simply to make wind tunnel concentration data accessible for everybody interested.

For whom is CODASC of interest?
CODAS
C is addressing scientists working on urban air quality issues. It is of special interest for validation of numerical simulations
or experimental investigations.

Where is CODASC from?
CODAS
C data is from the Laboratory of Building- and Environmental Aerodynamics at the Institute for Hydromechanics (IfH) at the University of Karlsruhe/Germany. The Laboratory of Building- and Environmental Aerodynamics
runs a number of wind tunnels, among them are several atmospheric boundary layer wind tunnels.

Atmospheric boundary layer wind tunnel: wind tunnel boundary layer profile        

W/H = 1
(aspect ratio: street width W to building height H)

α

TREE PLANTING

normalized concentration data c+
file name = [W/H]_[α]_[ρs]_[λ]_[wall]

concentration contour plot
(300 dpi)

90 tree-free
(wind perpendicular to street)
 

1_90_0,0_000_A.txt

1_90_0,0_000_B.txt

 

1_90_0,0_000_A.xls

1_90_0,0_000_B.xls

1_90_0,0_000.jpg

45 tree-free
(wind inclined to street)
1_45_0,0_000_A.txt

1_45_0,0_000_B.txt

1_45_0,0_000_A.xls

1_45_0,0_000_B.xls

1_45_0,0_000.jpg
0 tree-free
(wind parallel to street)
1_00_0,0_000_A.txt

1_00_0,0_000_B.txt

1_00_0,0_000_A.xls

1_00_0,0_000_B.xls

1_00_0,0_000.jpg

(read how to model trees)

90

stand density
dense (ρs = 1)

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

(read how to model trees)

1_90_1,0_080_A.txt

1_90_1,0_080_B.txt

1_90_1,0_080_A.xls

1_90_1,0_080_B.xls

1_90_1,0_080.jpg

1_90_1,0_200_A.txt

1_90_1,0_200_B.txt

1_90_1,0_200_A.xls

1_90_1,0_200_B.xls

1_90_1,0_200.jpg
45

stand density
dense (ρs = 1)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

1_45_1,0_080_A.txt

1_45_1,0_080_B.txt

1_45_1,0_080_A.xls

1_45_1,0_080_B.xls

1_45_1,0_080.jpg
1_45_1,0_200_A.txt

1_45_1,0_200_B.txt

1_45_1,0_200_A.xls

1_45_1,0_200_B.xls

1_45_1,0_200.jpg
0

stand density
dense (ρs = 1)

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

1_00_1,0_080_A.txt

1_00_1,0_080_B.txt

1_00_1,0_080_A.xls

1_00_1,0_080_B.xls

1_00_1,0_080.jpg
1_00_1,0_200_A.txt

1_00_1,0_200_B.txt

1_00_1,0_200_A.xls

1_00_1,0_200_B.xls

1_00_1,0_200.jpg

90

stand density

loose (ρs = 0.5)

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

1_90_0,5_080_A.txt

1_90_0,5_080_B.txt

1_90_0,5_080_A.xls

1_90_0,5_080_B.xls

1_90_0,5_080.jpg
1_90_0,5_200_A.txt

1_90_0,5_200_B.txt

1_90_0,5_200_A.xls

1_90_0,5_200_B.xls

1_90_0,5_200.jpg
45

 

stand density
loose (ρs = 0.5)

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

1_45_0,5_080_A.txt

1_45_0,5_080_B.txt

1_45_0,5_080_A.xls

1_45_0,5_080_B.xls

1_45_0,5_080.jpg
1_45_0,5_200_A.txt

1_45_0,5_200_B.txt

1_45_0,5_200_A.xls

1_45_0,5_200_B.xls

1_45_0,5_200.jpg
0

 

tand density
loose (ρs = 0.5)

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

1_00_0,5_080_A.txt

1_00_0,5_080_B.txt

1_00_0,5_080_A.xls

1_00_0,5_080_B.xls

1_00_0,5_080.jpg
1_00_0,5_200_A.txt

1_00_0,5_200_B.txt

1_00_0,5_200_A.xls

1_00_0,5_200_B.xls

1_00_0,5_200.jpg

W/H = 2

(aspect ratio: street width W to building height H)

α

TREE PLANTING

normalized concentration data c+

file name = [W/H]_[α]_[ρs]_[λ]_[wall]

concentration contour plot

(300 dpi)

90 tree-free

(wind perpendicular to street)

2_90_0,0_000_A.txt

2_90_0,0_000_B.txt

2_90_0,0_000_A.xls

2_90_0,0_000_B.xls

2_90_0,0_000.jpg
45 tree-free

(wind inclined to street)

2_45_0,0_000_A.txt

2_45_0,0_000_B.txt

2_45_0,0_000_A.xls

2_45_0,0_000_B.xls

2_45_0,0_000.jpg
0 tree-free

(wind parallel to street)

2_00_0,0_000_A.txt

2_00_0,0_000_B.txt

2_00_0,0_000_A.xls

2_00_0,0_000_B.xls

2_00_0,0_000.jpg

90

stand density
dense (ρs = 1)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

2_90_1,0_080_A.txt

2_90_1,0_080_B.txt

2_90_1,0_080_A.xls

2_90_1,0_080_B.xls

2_90_1,0_080.jpg
2_90_1,0_200_A.txt

2_90_1,0_200_B.txt

2_90_1,0_200_A.xls

2_90_1,0_200_B.xls

2_90_1,0_200.jpg
45

stand density
dense (ρs = 1)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

2_45_1,0_080_A.txt

2_45_1,0_080_B.txt

2_45_1,0_080_A.xls

2_45_1,0_080_B.xls

2_45_1,0_080.jpg
2_45_1,0_200_A.txt

2_45_1,0_200_B.txt

2_45_1,0_200_A.xls

2_45_1,0_200_B.xls

2_45_1,0_200.jpg
0

stand density
dense (ρs = 1)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

not measured

not measured

 
2_00_1,0_200_A.txt

2_00_1,0_200_B.txt

2_00_1,0_200_A.xls

2_00_1,0_200_B.xls

2_00_1,0_200.jpg

 

90

stand density
loose (ρs = 0.5)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

2_90_0,5_080_A.txt

2_90_0,5_080_B.txt

2_90_0,5_080_A.xls

2_90_0,5_080_B.xls

2_90_0,5_080.jpg
2_90_0,5_200_A.txt

2_90_0,5_200_B.txt

2_90_0,5_200_A.xls

2_90_0,5_200_B.xls

2_90_0,5_200.jpg
45

stand density
loose (ρs = 0.5)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

2_45_0,5_080_A.txt

2_45_0,5_080_B.txt

2_45_0,5_080_A.xls

2_45_0,5_080_B.xls

2_45_0,5_080.jpg
2_45_0,5_200_A.txt

2_45_0,5_200_B.txt

2_45_0,5_200_A.xls

2_45_0,5_200_B.xls

2_45_0,5_200.jpg
0

stand density
loose (ρs = 0.5)

 

crown porosity
PVol
= 97.5% (λ = 80m-1)
PVol
= 96.0% (λ = 200m-1)

not measured not measured  
2_00_0,5_200_A.txt

2_00_0,5_200_B.txt

2_00_0,5_200_A.xls

2_00_0,5_200_B.xls

2_00_0,5_200.jpg