دانلود ترجمه مقاله محاسبه و تجسم طغیان سیل بر اساس یک شبکه مثلث توپوگرافی

شبیه سازی ها طغیان سیل برای کنترل سیل و کاهش فاجعه مهم است و اهمیت حیاتی دارد. دقت و کارایی دو شاخص مهم در ارزیابی عملکرد مدل طغیان سیل می باشند. اگر چه یک مدل طغیان سیل بر اساس علم نیرو می تواند اطلاعات دقیق توپوگرافی را در ارزیابی فرآیندهای طغیان سیل استفاده کند، ساخت یک مدل مناسب برای توپوگرافی پیچیده و شرایط سیل متغیر دشوار است. از همه مهمتر، زمان شبیه سازی برای این نوع مدل به طور کلی بیش از حد طولانی بوده و نمی تواند در زمان واقعی انجام شود.

Simulations of flood inundation have important practical significance for flood control and disaster alleviation.
Accuracy and efficiency are two major indicators in evaluating the performance of flood inundation
models. Although a flood inundation model based on hydrodynamics can use detailed topographic
data to accurately evaluate flood inundation processes, it is difficult to build a reasonable model for complex
topography and variable flood conditions. More importantly, the simulation time for these types of
models is generally too long and cannot be accomplished in real time. This paper proposes a new method,
named the flood-connected domain calculation (FCDC) method, to improve the efficiency of flood inundation
models in regions of complex topography. The main concept of the method is that inundation can
only occur in areas where the water level is higher than the terrain elevation and connected with the
river; this requires the key development of an algorithm to search for connected domains. The FCDC
method uses a topographic triangle network to define the DEM source data and topological relationships
are constructed to undertake the flood-connected domain search. Two cases from the Songhua River in
Harbin City, China have been examined to expand the usage and effect of the method. The results show
that the FCDC method can simulate source flooding such as inundation by river flooding or dike breach
flooding and can characterize inundation under a range of conditions. Also, it can use a range of resolutions
for topographic data and water level as model input, which in turn significantly reduces simulation
time while providing reasonable simulation results. In addition, the FCDC method can be used to obtain a
smooth display effect for flood inundation processes. Overall, the FCDC method is useful for estimating
flood inundation and preparing for emergencies because of its time-efficient performance and low input
and hardware requirements

سال انتشار:2014
تعداد صفحه ترجمه:32
تعداد صفحه فایل انگلیسی:10

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