EMRAS II WG 9 Urban Areas Short range Dejan Trifunovi , Vienna, - PowerPoint PPT Presentation

EMRAS II WG 9 “Urban Areas” Short range Dejan Trifunovi ć , Vienna, Austria, 24. ‐ 28. January 2011

Experiment SET ‐ UP Orientation of the blast: “PARALEL” TO THE GROUND BACK BLAST WAVE – due to explosion set ‐ up Modelling requirement: Unbounded upwards Modelling requirement: Unrestricted 360 ° geometry explosion

Experiment SET ‐ UP dispersion outcome Shift of the maximum deposition location around explosion point forward for about 10 ‐ 15 m.

HotSpot model Explosion geometry

HotSpot Airborne Fraction DEFAULT CT=76*(W)ˆ0,25

HotSpot model Dispersion and Deposition

HotSpot model INPUT

HotSpot model INPUT

HotSpot model INPUT

Plume Centraline Vertical Profile

Plume Centraline Vertical Profile

Plume Centraline Vertical Profile

Short range scenario TEST 2 Wind speed: 0,6 m/s Weather stability class: B Source term: 1058 MBq Cloud top: 5 m Respirable Deposition velocity=0,0008 m/s Respirable release fr.=99%

HotSpot “Calibration”

HotSpot “Calibration”

HotSpot “Calibration” CT=35 m ; Respirable Deposition velociy=0,03 m/s ; Respirable release fr.=97,5% CT=5 m ; Respirable Deposition velocity=0,0008 m/s ; Respirable release fr.=99%

ENDPOINTS TEST 2

ENDPOINTS TEST 2 1200000 180000 160000 1000000 140000 800000 120000 0 m Bq/m2 0 m Bq/m2 100000 5 m Bqmin/m3 5 m Bqmin/m3 600000 80000 10 m Bqmin/m3 10 m Bqmin/m3 60000 400000 15 m Bqmin/m3 15 m Bqmin/m3 40000 200000 20000 0 0 0 200 400 600 800 1000 0 20 40 60 2000 1800 1600 1400 0 m Bq/m2 1200 5 m Bqmin/m3 1000 800 10 m Bqmin/m3 600 15 m Bqmin/m3 400 200 0 0 500 1000 1500 2000 2500

Short range scenario TEST 3 Wind speed: 1,3 m/s Weather stability class: D Source term: 1222 MBq Cloud top: 13 m Respirable Deposition velocity=0,0008 m/s Respirable release fr.=99%

ENDPOINTS TEST 3

ENDPOINTS TEST 3 1000000 180000 900000 160000 800000 700000 140000 0 m Bq/m2 600000 120000 0 m Bq/m2 5 m Bqmin/m3 500000 100000 400000 5 m Bqmin/m3 10 m Bqmin/m3 80000 300000 10 m Bqmin/m3 15 m Bqmin/m3 200000 60000 15 m Bqmin/m3 100000 40000 0 20000 0 20 40 60 0 0 200 400 600 800 1000 6000 5000 4000 0 m Bq/m2 5 m Bqmin/m3 3000 10 m Bqmin/m3 2000 15 m Bqmin/m3 1000 0 0 500 1000 1500 2000 2500

Short range scenario TEST 4 Wind speed: 0,1 m/s Weather stability class: C Source term: 1088 MBq Cloud top: 13 m Respirable Deposition velocity=0,0008 m/s Respirable release fr.=99%

ENDPOINTS TEST 4

ENDPOINTS TEST 4 12000000 1400000 10000000 1200000 8000000 1000000 0 m Bq/m2 0 m Bq/m2 800000 5 m Bqmin/m3 6000000 5 m Bqmin/m3 10 m Bqmin/m3 600000 10 m Bqmin/m3 4000000 15 m Bqmin/m3 400000 15 m Bqmin/m3 2000000 200000 0 0 0 20 40 60 0 200 400 600 800 1000 20000 18000 16000 14000 0 m Bq/m2 12000 5 m Bqmin/m3 10000 8000 10 m Bqmin/m3 6000 15 m Bqmin/m3 4000 2000 0 0 500 1000 1500 2000 2500

EMRASII WG 9 “Urban Areas” Mid range Dejan Trifunovi ć , Vienna, Austria, 24. ‐ 28. January 2011

MID ‐ RANGE Cs ‐ 137 Ground deposition 12000 10000 8000 Cs D Bq/m2 6000 Cs E Bq/m2 4000 2000 0 0 200 400 600 800 1000 9000 8000 7000 6000 5000 Cs D Bq/m2 4000 Cs E Bq/m2 3000 2000 1000 0 0 20000 40000 60000 80000 100000

MID ‐ RANGE I ‐ 131 Ground deposition 350000 300000 250000 200000 I D Bq/m2 150000 I E Bq/m2 100000 50000 0 0 200 400 600 800 1000 250000 200000 150000 I D Bq/m2 I E Bq/m2 100000 50000 0 0 20000 40000 60000 80000 100000

MID ‐ RANGE SUMMARY Ground deposition Guadalajara ‐ Ground depoosition in Bq/m2 Madrid ‐ Ground deposition in Bq/m2 D E D E Cs 14 120 Cs 9,1 79 I 400 3500 I 230 2000 STABLE NEUTRAL Atmospheric stability class: E Atmospheric stability class: D Wind speed at 10 m height: 3,0 m/s Wind speed at 10 m height: 6,0 m/s Effective release height: 50 m Cs ‐ 137 Deposition velocity = 0,04 cm/s, Source term = 4E+12 Bq Release time: 1 hour I ‐ 131 Deposition velocity = 0,22 cm/s, Source term = 21E+12 Bq