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EFDC program improvement-based water surface heat exchange numerical simulation method

A numerical simulation and program improvement technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of certain difficulty in determining parameter values ​​and various parameters in model calculation formulas, and achieve fast calculation speed and easy collection , the effect of fewer parameters

Inactive Publication Date: 2017-09-01
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology

There are many calculation parameters in this model, and it is difficult to determine the parameter values

Method used

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  • EFDC program improvement-based water surface heat exchange numerical simulation method
  • EFDC program improvement-based water surface heat exchange numerical simulation method
  • EFDC program improvement-based water surface heat exchange numerical simulation method

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Embodiment Construction

[0041] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0042] see figure 1 , the present invention provides a technical solution: an improved water surface heat exchange numerical simulation method based on EFDC program, including: importing boundary data, then dividing calculation grids, setting boundary conditions, setting initial conditions, then writing new codes, and embedding EFDC program, perform code debugging, then input water surface heat exchange parameters, and perform model verification. If the model verification is not accurate, re-set the boundary conditions and re-debugging the code. If the model verification is accurate, perform model calculation, and finally perform post-processing.

[0043] The specific steps of embedding the EFDC program are: embedding the water surface heat exchan...

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Abstract

The invention provides an EFDC program improvement-based water surface heat exchange numerical simulation method. The method comprises the following steps of: importing boundary data and dividing a calculation grid; setting a boundary condition and an initial condition; compiling a new code and embedding the new code in an EFDC program to carry out code debugging; inputting a water surface heat exchange parameter to carry out model verification; if the model verification is inaccurate, carrying out code debugging again froma newly set boundary condition; if the model verification is accurate, carrying out model calculation; and finally carrying out post-processing. Compared with the prior art, the method provided by the invention has the advantages that a water surface heat exchange model which is easy to apply is embedded in the EFDC program, so that the parameters and steps of calculating water temperature by the EFDC are greatly simplified, the input parameters are measured data which is easy to collect, and relatively higher precision is provided. According to the method, the used water surface heat exchange model is few in parameters, few in defined program arrays and relatively high in calculation speed.

Description

technical field [0001] The invention is an improved water surface heat exchange numerical simulation method based on EFDC program, which is applied to water temperature numerical simulation of reservoirs, lakes and rivers. Background technique [0002] Water temperature is an important factor affecting the water quality process, such as dissolved oxygen, ammonia, nitrogen concentration, oxygen consumption coefficient, reoxygenation coefficient, etc. are all related to water temperature, and water temperature is closely related to the biochemical reactions of various water quality parameters in the water body. Therefore, it is an important content of water environment numerical simulation research to study the change law of water body temperature, establish a water temperature numerical model, and predict the temporal and spatial changes of water temperature. [0003] An important factor affecting water temperature is the heat exchange between the water body and the atmospher...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/08
Inventor 张少雄张伟星吕飞赵恒达司佳蒋振中闫海真
Owner SHIJIAZHUANG TIEDAO UNIV
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