1. Overview of urbanGRID CRTI-02-0093RD Project Review Meeting
Canadian Meteorological Centre
August 22-23, 2006

2. Component 1: urbanGRID urbanGRID urbanSTREAM flow solver
grid_generator
ArcView Shape file (*.shp,*.dbf)
Meteorological data file (urbanGEM / LAM)
grid generation
boundary_interpolate
interpolate BCs
urbanGRID
urbanSTREAM
flow solver

3. Buildings Resolved
Virtual Buildings

4. Buildings Resolved
Virtual Buildings (Drag-Force Approach

5. Outer: 99x139x69=949,509
Inner: 55x100x69=379,500
NK-1=69
NJ-1=139
NI-1=99 55
100

6. Building_v5.shp (shape file) ELEVATION (field name)
urbanSTREAM
Buildings Resolved
Virtual Buildings
grid_generator
grid_urbanSTREAM.dat
Input.par
Building_v5.shp (shape file)
ELEVATION (field name)
(X,Y,Z) at NE,SW corners for outer region in UTM
(X,Y,Z) at NE,SW corners for inner region in UTM
# of grid points for outer region (99x139x69)
# of grid points for inner region (55x100x69)
grid_urbanSTREAM.dat (grid file for urbanSTREAM)

7. Bit Structure for Flag Array
C_E
20=1
C_W
21=2
C_N
22=4
C_S
23=8
C_T
24=16
C_B
25=32
C_O
26=64
C_D
27=128
Fluid
C_E=1
E (I)
Obstacle
C_W=2
C_O=64
IF( IAND( FLAG(I, J, K), C_O) /= 0 ) THEN
inside obstacle
ELSE
outside obstacle
END IF

8. IF( IAND( FLAG(I, J, K), C_D ) /= 0 ) THEN
drag-force approach
END IF
C_D=128
C_D=0

9. Mean wind speed and direction with drag-force approach
Expt data Drag force

10. urbanGRID grid_urbanSTREAM urbanSTREAM Boundary_Z.dat IOP9_250m.dat
grid_generator
urbanSTREAM
ArcView Shape file (*.shp,*.dbf)
grid generation
Meteorological data file (urbanGEM / LAM)
boundary_interpolate
Boundary_Z.dat
interpolate BCs
IOP9_250m.dat

11. Coupling GEM/LAM with urbanSTREAM (One-Way Interaction)
urbanSTREAM domain
Portion of GEM/LAM domain