seep 渗流分析的 步骤
1Set the Working Area确定工作范围The working area is the size of the space available for defining the problem. The working area may be smaller, equal to or greater than the printer page. If the working area is larger than the printer page, the problem will be printed on multiple pages when it is displayed at 100% or greater. The working area should be set so that you can work at a convenient scale.
2 Set the Scale绘图比例
The geometry of the problem is defined in meters.
3 Sketch the Problem
In developing a finite element mesh, it is convenient to first prepare a sketch of the problem dimensions. This sketch is a useful guide for drawing the finite element mesh and defining the boundary conditions.
4 Specify the Analysis Type
This problem is a steady-state analysis.
To specify this information:
1. Choose Analysis Settings from the KeyIn menu and select the Type property sheet tab
5 Define a Hydraulic Conductivity Function渗透函数
The foundation material has a hydraulic conductivity equal to 1 x 10-5 m/sec, and it is independent of the pore-water pressure level. Since the hydraulic conductivity must be defined as a function, the constant hydraulic conductivity can be defined by a two-point horizontal function.
To define a conductivity function:
1. Choose Functions from the KeyIn menu. The Functions cascading menu will appear.
2. Choose Conductivity from the Functions cascading menu.
6Define Material Properties 材料特性
For each material type, you must specify:
a material number unique to the material
a hydraulic conductivity function (kx)
a volumetric water content function, if the problem is a transient analysis
the ratio of the ky to kx hydraulic conductivities
the direction of the kx hydraulic conductivity
7 Generate Finite Elements（生成元素，画网格）
For this problem, it is adequate to use four-noded quadrilateral elements in the geometry. All elements have the properties of Material 1. Elements will be generated in three regions.
To generate finite elements in the first region of the problem:
1. Choose Multiple Elements from the Draw menu. The cursor will change from an arrow to a cross-hair and the status bar will indicate that "Draw Multiple Elements" is the current mode.
8 Specify Node Boundary Conditions 边界条件
Boundary conditions may be specified as total head (H), total nodal flow or flux (Q), or flow per unit length along the side of an element (q).
9 Draw Flux Sections (检查有没有错误）
A flux section is desired for this problem to compute the total seepage flow through the foundation of the dam.
10 Verify the Problem
The problem definition should now be verified by SEEP/W to ensure that the data has been defined correctly. To solve the finite element equations, it is also important that the node numbers are sorted in a horizontal or vertical direction and that they form a complete sequence starting with Number 1. Keeping the node number difference in each element as low as possible helps to minimize the memory requirements of the SOLVE function. Although SEEP/W sorts the node and element numbers each time that multiple elements are generated, the mesh is not sorted when single elements are drawn using Draw Single Elements or when nodes and elements are added using the KeyIn Nodes and KeyIn Elements commands.
11 Solving the Problem
The second part of an analysis is to use the SEEP/W SOLVE function to compute the total hydraulic head at each node, the flow velocity within each element, and the total flux across specified sections.
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结果后处理：
12Draw Contours
To draw contours of the results:
* Select Contours from the Draw menu.
*Draw the Velocity Vectors
To change the length at which the velocity vectors are displayed:
*Draw the Flux Value 楼主不会直接吧help直接贴上来了吧？ 顶一下！新手需要的！:) 有中文的更好，谢谢了 这个有点高深啊英文的看不太懂 初始含水量怎么设置和体现呢，谢谢各位高手 这个不错，谢谢了。 楼主要是做个中文教程就好了 柳树 发表于 2012-2-13 14:20 static/image/common/back.gif
初始含水量怎么设置和体现呢，谢谢各位高手
我也希望知道答案 如果你知道了 告诉我呗 谢谢 顶一下，谢谢 这个其实也不难，看多了就晓得什么意思了！
么看懂。。 最好有个使用步骤 楼主不会直接吧help直接贴上来了吧 haige 发表于 2008-7-8 16:18
楼主不会直接吧help直接贴上来了吧？
1设置工作区确定工作范围
工作区是可用于定义问题的空间大小。工作区域可能小于、等于或大于打印机页面。如果工作区域大于打印机页面，当它显示为 100% 或更大时，问题将打印在多个页面上。应设置工作区域，以便您可以在方便的范围内工作。
2 设置Scale绘图比例
问题的几何定义以米为单位。
3 绘制问题草图
在开发有限元网格时，首先准备问题尺寸的草图是很方便的。该草图是绘制有限元网格和定义边界条件的有用指南。
4 指定分析类型
这个问题是稳态分析。
要指定此信息：
1. 从 KeyIn 菜单中选择 Analysis Settings 并选择 Type 属性表选项卡
5 定义水力传导率函数 渗透函数
基础材料的水力传导率等于 1 x 10-5 m/sec，它是与孔隙水压力水平无关。由于水力传导率必须定义为一个函数，恒定水力传导率可以定义为两点水平函数。
定义电导率函数：
1. 从 KeyIn 菜单中选择 Functions。将出现功能级联菜单。
2. 从功能级联菜单中选择电导率。
6 定义材料特性材料特性
对于每种材料类型，您必须指定：
材料唯一的材料编号
水力传导率函数 (kx)
体积含水量函数，如果问题是瞬态分析
ky 与 kx 水力传导率
的比率 kx的方向水力传导率
7 Generate Finite Elements（生成元素，画网格）
对于这个问题，在几何中使用四节点的四边形元素就足够了。所有元素都具有材质 1 的属性。元素将在三个区域中生成。
在问题的第一个区域生成有限元：
1. 从绘图菜单中选择多个元素。光标将从箭头变为十字准线，状态栏将指示“绘制多个元素”是当前模式。
8 指定节点边界条件
边界条件可以指定为总水头（H）、总节点流量或通量（Q）或沿单元边的单位长度流量（q）。
9 Draw Flux Sections (检查有没有错误)
这个问题需要一个通量截面来计算通过大坝基础的总渗流。
10 验证问题
现在应该由 SEEP/W 验证问题定义，以确保数据已正确定义。为了求解有限元方程，节点编号按水平或垂直方向排序并形成从编号 1 开始的完整序列也很重要。使每个单元中的节点编号差异尽可能小有助于最小化SOLVE 函数的内存要求。尽管每次生成多个元素时 SEEP/W 都会对节点和元素编号进行排序，但是当使用 Draw Single Elements 绘制单个元素或使用 KeyIn Nodes 和 KeyIn Elements 命令添加节点和元素时，网格不会排序。
11 解决问题
分析的第二部分是使用 SEEP/W SOLVE 函数来计算每个节点的总水头、每个单元内的流速以及指定部分的总通量。
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结果后处理：
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绘制轮廓 要绘制结果的轮廓：
* 从“绘制”菜单中选择“轮廓”。
*绘制速度矢量
要更改速度矢量显示的长度：
*绘制通量值
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