نتایج جستجو برای: مدل Nays 2D Flood

تعداد نتایج: 225665  

شبیه‌سازی دو بعدی سیل با استفاده از مدل Nays 2D Flood و مقایسه آن با تصویر ماهواره سنتینل2 (مطالعه موردی: سیل اسفند 1398 در بازه انتهایی رودخانه ارازکوسه، استان گلستان) چکیده سابقه و هدف: وقوع سیلاب با دوره بازگشت‌های نادر در بیشتر مناطق کشور و اثرات زیان‌بار جانی و مالی ناشی از آن‌ که اغلب نیز به دلیل اقدامات انسانی تشدید می‌شوند، باعث شده تا به مقوله مدیریت سیلاب بیش‌ازپیش پرداخت...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2007
Ashis Kumar Dey Seiji Kamioka

Correct prediction of flood extents in urban catchments has become a challenging issue. The traditional urban drainage models that consider only the sewerage-network are able to simulate the drainage system correctly until there is no overflow from the network inlet or manhole. When such overflows exist due to insufficient drainage capacity of downstream pipes or channels, it becomes difficult ...

2014

This paper explores potential flood resilience approaches for the highly urbanised Wortley Beck river basin, south west of the City of Leeds, UK. Integrated 1D and 2D hydrodynamic modelling, using the ISIS and TUFLOW has been utilised to explore potential impact of SuDS on the flood hazard for three (1:15, 1:50 and 1:100) flood events. A direct rainfall runoff modelling approach has been employ...

2007
Honghai Qi Youngho Jeon

Historical flood events have shown that the level of damage does not solely depend on exposure to flood waters. Vulnerabilities due to various socio-economic factors such as population at risk, public awareness, and presence of early warning systems, etc. should also be taken into account. Federal and state agencies, watershed management coalitions, insurance companies, need reliable decision s...

2007
J. M. Lui J. W. Lee J. S. Lai S. Y. Ho S. K. Chang P. Y. Lee T. Y. Pan

The area of the Dansuie River watershed located in the northern Taiwan is 2,726 km. The main stream runs 159km through the Taipei metropolitan areas as the political, economic, and cultural centers of Taiwan. Owing to short and steep runoff path-lines and non-uniform rainfall patterns, large floods arrive rapidly in the middle-to-downstream reaches of the watershed, causing serious damage. In o...

2015
P. Delaney Y. Qiao T. Mereu N. Lorrain

The city of Mississauga has recently identified strategic growth areas where investments will be targeted for redevelopment and intensification projects. One of the growth areas has a history of flooding during major storm events. In order to redevelop this area, businesses and land owners need to prepare development proposals ensuring that appropriate flood proofing requirements have been achi...

2015
Siddharth Narayan Dave Simmonds Robert J. Nicholls Derek Clarke

Coastal flood assessments often require the analysis of a complex system of flood sources, pathways and receptors. This can be challenging for traditional numerical modelling approaches. In this paper we use a Bayesian networks approach to assess coastal floodplains as networks of inter-linked elements. A Bayesian network (Bn) model is built to describe flood pathways and estimate flood extents...

2017
Nianqiang Zhang Na Li Jing Wang Sheng Chen Shaowei Qiu

Considering characteristics of high river density, special underlying surface in plain river network region, and municipal drainage system function, river network drainage unit model is proposed, which is defined as a region surrounded by main river or embankment. Flood storage variety and control projects regulation of small rivers in each unit is simulated. With drainage catchment as an objec...

2018
Mingfu Guan Nigel G. Wright Andrew Sleigh

Inundation models based on the Shallow Water Equations (SWE) have been shown to perform well for a 3 wide variety of situations even at the limit of their theoretical applicability and, arguably, somewhat beyond. One of 4 these situations is the catastrophic event of floods induced by dyke breach and consequent dyke erosion. The dyke 5 collapse is often not sudden as assumed by many flood simul...

2015
Jian Tang Qingyun Li T C Cham Y Mitani

2011 Thailand flood has brought serious impact to downstream of Chao Phraya River Basin. The flood peak period started from August, 2011 to the end of October, 2011. This research focuses on midstream of Chao Phraya River Basin, which is Nakhon Sawan area includes confluence of Nan River and Yom River, also confluence of Ping River and Nan River. The main purpose of this research is to understa...

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