1 2 2 1. 310016 2. 310020 doi 10. 13928 /j. cnki. wrahe. 2015. 09. 024 TV131. 3 A 1000-0860 2015 09-0100-05 Study on oil-film drifting track from sudden oil-spilling accident within Qiantangjiang River Estuary WU Yuemin 1 LI Ruohua 2 ZHOU Wei 2 1. Qiantang River Administration of Zhejiang Province Hangzhou 310016 Zhejiang China 2. Zhejiang Institute of Hydraulics & Estuary Hangzhou 310020 Zhejiang China Abstract Aiming at the characteristics of strong tide within Qiantangjiang River Estuary the vertical average 2 - D tidal flow field is calculated with numerical simulation method and then it is converted into the surface flow field in accordance with the result of the analysis on the measured vertical flow velocity. On the basis of this the drifting tracks of the oil-films from the sudden oil-spilling accidents occurred in the estuary of three rivers i. e. Puyangjiang River Fuchunjiang River and Qiantangjiang River at various tidal phases are simulated with the method of Lagrangian particle tracking from which the law of the oil-film drifting and its risks of impacting on the water intakes are analyzed so as to provide a technical support for enhancing the emergency responding capacity of Hangzhou for dealing with the sudden oil-spilling accident. Key words Qiantangjiang River Estuary sudden oil-spilling accident oil-filmtrack numerical simulation 1 7 1973 ~ 2006 2 635 1 Oilmap 8 GNOME 9 2-3 10-12 2015-04-16 4-6 1971 100 W ater Resources and Hydropower Engineering V ol. 46 No. 9
13-15 Lagrange 3. 1 h t + hu + hv = 0 1 x y hu + t x hu2 + 1 2 gh 2 ( ) + y huv = - gh z 0 ( + x u u 2 2 槡 + v + W C ) 2 x + fhv + z h x 2hv u ( t x ) + 20 y hv u ( t [ y + v ] ) 2 x 85% hv + 16 t y hv2 + 1 2 gh 2 ( ) + x huv = - gh z 0 ( + y v u 2 2 槡 + v + W C ) 2 y - fhu + z h y 2hv v ( t x ) + x hv u ( t [ y + v ] ) 3 x h u v x y z 0 f C z 2 v t Smagorinsky 282 km W x W y x y 75 km 122 km 85 km ~ 100 ~ 101 m 2 /s 101 m 2 /s 2. 47 m 5. 57 m 9 m Roe MUSCL 3 3. 2 Lagrange Lagrange 101
1. 23 珝 U L = X 珗 x珒 0 t + T - X 珔 x珒 0 t 0 /T = 1 t0 +T T U L x珒 3. 4 0 t dt 4 t 0 3. 4. 1 tn tn X i t N = X i t N-1 + U e X i t N-1 t + t N -1 U e t N -1 X i t n-1 t' dt' U e X i t N-1 t dt 5 U x y t X i X i t 0 t 3. 3 2010 8 3 6 1 h 2 1 2007 10 2010 8 3 1 790 km 2 2 N 3. 4. 2 1 2 3. 4. 3 1. 15 ~ 1. 35 1. 23 102
3 72 h 2007 10 2 5 4 50 50% 500 m 3 /s 6 4 8 10 14 18 24 4 Lagrange 2 1 5 2 1 5 8 373 m 9 178 1 /m /h 1 3 247 1 029 1 998 981 2 7 412 2 917 3 831 5 338 3 8 373 5 453 5 597 8 491 4 7 621 8 622 7 295 9 178 2 204 11 172 8 708 6 092 1 590 13 340 845 681 4 803 17 611 186 2 435 2 002 7 288 8 903 986 697 16 809 14 363 9 611 10 461 8 875 7 458 20 426 36 15 831 24 907 16 222 15 489 48 17 995 15 905 13 155 23 145 72 31 718 26 186 22 166 38 009 /h 7. 3 0. 5 0. 3 7. 8 22. 3 4. 5 4. 2 21. 5 47. 8 20. 2 29. 7 46. 2 103
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