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

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

Jan 07, 2024 527 likes •810 views

EMRAS II WG 9 Urban Areas Short range Dejan Trifunovi , Hamilton, Canada, 15. 17. June 2011 Experiment SET UP Orientation of the blast: PARALEL TO THE GROUND BACK BLAST WAVE due to explosion set up Modelling

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EMRAS II WG 9 “Urban Areas” Short range

Dejan Trifunović, Hamilton, Canada, 15.‐17. June 2011

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Experiment SET‐UP

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

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Experiment SET‐UP dispersion outcome

Shift of the maximum deposition location around explosion point forward for about 10 ‐ 15 m.

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HotSpot model Explosion geometry

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HotSpot Airborne Fraction DEFAULT

CT=76*(W)ˆ0,25

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HotSpot model Dispersion and Deposition

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HotSpot model INPUT

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SLIDE 8

HotSpot model INPUT

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HotSpot model INPUT

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Plume Centraline Vertical Profile

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Plume Centraline Vertical Profile

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Plume Centraline Vertical Profile

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SLIDE 13

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%

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HotSpot “Calibration”

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HotSpot “Calibration”

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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%

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ENDPOINTS TEST 2

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ENDPOINTS TEST 2

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

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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%

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ENDPOINTS TEST 3

20000 40000 60000 80000 100000 120000 140000 160000 180000 200 400 600 800 1000 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3 1000 2000 3000 4000 5000 6000 500 1000 1500 2000 2500 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3 100000 200000 300000 400000 500000 600000 700000 800000 900000 1000000 10 20 30 40 50 60 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3

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SLIDE 21

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%

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ENDPOINTS TEST 4

200000 400000 600000 800000 1000000 1200000 1400000 200 400 600 800 1000 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 500 1000 1500 2000 2500 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3 2000000 4000000 6000000 8000000 10000000 12000000 10 20 30 40 50 60 0 m Bq/m2 5 m Bqmin/m3 10 m Bqmin/m3 15 m Bqmin/m3

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EMRASII WG 9 “Urban Areas” Mid range

Dejan Trifunović, Hamilton, Canada, 15.‐17. June 2011

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MID‐RANGE Cs‐137 Ground deposition

200 400 600 800 1000 1200 1400 1600 1800 200 400 600 800 1000 Cs D Bq/m2 Cs E Bq/m2 200 400 600 800 1000 1200 1400 20000 40000 60000 80000 100000 Cs D Bq/m2 Cs E Bq/m2

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MID‐RANGE I‐131 Ground deposition

10000 20000 30000 40000 50000 60000 200 400 600 800 1000 I D Bq/m2 I E Bq/m2 5000 10000 15000 20000 25000 30000 35000 40000 45000 20000 40000 60000 80000 100000 I D Bq/m2 I E Bq/m2

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MID‐RANGE SUMMARY