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• Delft3D軟件在水利工程中的數值模擬
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• Delft3D是目前世界上先進的完全的三維水動力－水質模型系統，尤其支持曲面格式。系統能非常精確地進行大尺度的水流（Flow）、水動力（Hydrodynamics）、波浪（Waves）、泥沙（Morphology）、水質（Waq）和生態（Eco）的計算。Delft3D采用Delft計算格式，快速而穩定，完全保證質量、動量和能量守恒；并通過與法國EDF合作，Delft3D已經實現了類似TeleMac的有限單元法(Finite Elements)計算格式供用戶選擇；系統自帶豐富的水質和生態過程庫（Processes Library），能幫助用戶快速建立起需要的模塊。此外，在保證守恒的前提下，水質和生態模塊采用了網格結合的方式，大幅度降低了運算成本。系統實現了與GIS的無縫鏈接，有強大的前后處理功能，并與Matlab環境結合，支持各種格式的圖形、圖像和動畫仿真；基于Visual Basic的用戶界面非常友好。系統的操作手冊、在線幫助和理論說明全面、詳細、易用，既適合一般的工程用戶，也適合專業研究人員。Delft3D支持所有主要的操作系統，如Windows, Unix, Linux, Mac等。
• 主要性能指標:
• Delft3D是目前為止世界上很先進的完全的3維水動力－水質模型系統，包含水流、水動力、波浪、泥沙、水質、生態等6個模塊，各模塊之間完全在線動態耦合（online dynamic coupling）；整個系統按照目前新的“即插即用（plug and play）”的標準設計，完全實現開放（OMS: Open Modelling System），滿足用戶二次開發和系統集成的需求。
• 國內外已應用情況:
• Delft3D系統在國際上應用的十分廣泛，如荷蘭、俄羅斯、波蘭、德國、澳大利亞、美國、西班牙、英國、新西蘭、新加坡、馬來西亞等，尤其是美國已經有很長的應用歷史。中國香港地區從70年代中期就開始使用Delft3D系統，已經成為香港環境署的標準產品。Delft3D從80年代中期開始在內陸也有越來越多的應用，如長江口、杭州灣、渤海灣、滇池、遼河、三江平原。此外Delft3D已經成為很多國際著名的水、環境咨詢公司的有力工具，如DHV、Witteven+Boss、Royal Haskoning、Halcrow等公司。
• Delft3D Suite
• 3D/2D modelling suite for integral water solutions
• Wind, waves and currents shape our coasts. Climate change and rising sea levels add further to this pressure. To enable us to live safely along our shores, we need effective coastal and marine management. Moreover, these coastal processes do not present the only threat. We must also protect ourselves against excess river water, while on the other hand we need that water for transport, irrigation, energy, cooling, recreation, environmental protection and as a source of drinking water. Consequently, design and management procedures become more complex and require an integrated approach. Usually, a range of conflicting aspects needs to be evaluated and it is crucial that the compound impact may be surveyed from any desired viewpoint also in terms of time and space.
• In response to this challenge, Deltares has developed powerful modelling suite software called Delft3D, focusing primarily on application in the free surface water environment.
• General
• Delft3D is a flexible integrated modelling suite, which simulates two-dimensional (in either the horizontal or a vertical plane) and three-dimensional flow, sediment transport and morphology, waves, water quality and ecology and is capable of handling the interactions between these processes. The suite is designed for use by domain experts and non-experts alike, which may range from consultants and engineers or contractors, to regulators and government officials, all of whom are active in one or more of the stages of the design, implementation and management cycle.
• The current version of Delft3D is version 4.01.00.
• Features
• Some of the typical key features of Delft3D are:
• the suite gives direct access to state-of-the-art process knowledge, accumulated and developed at one of the world’s most renowned hydraulic institutes
• the Graphical User Interface (GUI) is one of the most user-friendly in the market
• all programmes show a high degree of integration and inter-operability.
• 3D/2D software
• Natural phenomena have inherent spatial characteristics, i.e. variations may occur in the two horizontal directions and along the vertical axis. Likewise, elementary natural processes often require a three-dimensional (3D) description, are time dependent and mostly interrelated. For instance, local hydrodynamic conditions determine the local sediment transport rates. However, the gradients of those rates determine the bathymetry, which in turn affects the hydrodynamic basis of the process. Appreciating nature’s complexity, we at Deltares have always incorporated these interrelationships into our work. And this notion has been a crucial design aspect in the development of reliable, modular 3D/2D software.
• Programmes
• Delft3D allows you to simulate the interaction of water, sediment, ecology and water quality in time and space. The suite is mostly used for the modelling of natural environments like coastal, river and estuarine areas, but it is equally suitable for more artificial environments like harbours, locks, etc. Delft3D consists of a number of well-tested and validated programmes, which are linked to and integrated with one-another. These programmes are further described separately hereafter:
• D-Flow
• D-Morphology
• D-Waves
• D-Water Quality
• D-Ecology
• D-Particle Tracking.
• Graphical User Interface
• The Graphical User Interface (GUI) is one of the most user-friendly in the market. Under the umbrella of this GUI, the programmes combine to form an exceptionally versatile, powerful and easy-to-use suite. The GUI allows the user to visualize model input, reference data and simulation results as time series and animations of one-, two- and three-dimensional data sets. The moving image of the flows in and out of an estuary, for instance, can be observed and examined in gradual, fast forward and fast backward mode. The user can also gather a wide, overhead perspective of his entire system or, by contrast, zoom in on a site of particular relevance or difficulty.
• Validation
• The validation of a modelling system such as Delft3D requires continuous attention. Even though the individual programmes of the suite have been thoroughly tested during their development, the suite as a whole requires intensive testing and also validation. To this end, a regular programme has been established and tests of many of the most likely combinations are continually performed. As a policy, new versions are released only after an extensive beta testing period, to ensure that our users are provided with stable and validated products.
• System requirements
• Delft3D is supported on both Microsoft Windows and Redhat/Linux.
• Several Delft3D service packages, including fully validated high quality Delft3D distributions, are available to suit your specific needs!
• - For consultancy firms, governmental organizations and research institutes worldwide we have designed our Basic Service Packages, Advance Service Packages, Professional Service Package, Premium Service Package and Enterprise Service Package.
• - For universities and schools, we offer our Education Service Package.
• - Code developers are supported with our Developer Service Package.
• Designed with you in mind, they offer you your requested level of convenience.
• Support desk
• The Delft3D support desk is the user’s instantly accessible contact point for all questions and problems concerning the software. The support team answers the majority of questions instantly or ensures that a timely reply is given by one of the other Delft3D team members. All incoming queries on the programmes, current or future performance, are recorded in our professional issue tracker system. This system is an important instrument in the realisation of improvements to the programmes, the manuals and the Deltares Academy training courses. New versions of Delft3D will be released once a year to all users, as part of their service package.0