feflow_user_manual_classic.pdf

Rkpko iáëí íáãéjêéäíéç ãíéêáä çí

Info icon This preview shows pages 49–51. Sign up to view the full content.

RKPKO iáëí íáãÉJêÉä~íÉÇ ã~íÉêá~ä Ç~í~ In FEFLOW all material data can vary over space and time. The data are assigned via the T-List tool or the Join tool in the Material data menus of the Flow data and Transport data options (Section 5.5 and Sec- tion 5.9). The submenu termed Material data time list menu displays, for each material parameter, the time values for which material distributions are defined. During the simulation, the current value is obtained by interpolat- ing between these given time steps, either linearly (‘Polylined’) or using a third-order polygonal smooth- ing (‘Akima’). Time-related material data can be applied in linear (non-cyclic) or cyclic mode (see Section 5.3.1). Time-related material data is stored either in the problem file ( *.fem ) or in an external ASCII or binary file ( *.mli ). Specify the name of the external file in the input field. The Preview time dependency button opens a plot window for the time-varying data for each element in a diagram. Figure 5.5 Material data time list controller. Figure 5.6 Preview time dependency of material data.
Image of page 49

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

RM ö rëÉêÛë j~åì~ä J m~êí f RK mêçÄäÉã bÇáíçê To delete the entire material list push the Delete list for material button. RKQ Pa päáÅÉ bäÉî~íáçå This submenu allows you to define, control, and plot the elevations of the single slices in a 3D problem. Use the z -coordinates button to assign the eleva- tions to the nodes. Besides the ’Global’ and ’Nodal’ mode a linear interpolation method (’Skew plane’) and different regionalization methods for imported data (’Database’) are available. Click Reconfigure 3D task to enter the Layer con- figurator window. The Layer configurator allows you to visualize and modify the different layers and slices and their elevations in a 3D model (see Section 10.4.2). To avoid intersection of slices during the assigning of z-elevations a minimal slice distance can be defined in the Slice distance modifier . For more detailed explanations see FEFLOW online Help . RKR cäçï a~í~ Initial conditions, boundary conditions, and flow material parameters can be displayed and edited. Pushing the Flow data button in the Problem Editor menu invokes the Flow data submenu. The first item, Flow initials , opens a submenu for assigning and viewing the initial hydraulic head condi- tions. More information about this item is available in Section 5.6. The Flow bound- aries option enables you to edit first-, sec- ond-, third-, and fourth-type boundary conditions and con- straints in a separate submenu. Parameter values can be entered either graphically using the ’Nodal’, ’Border’ and ’Rubber- box’ options or by different 1D and 2D ’Database’ interpolation methods. Both stationary and time-vary- ing boundary conditions can be assigned. The defini- tion of constraints for the boundary conditions is executed via submenus.
Image of page 50
Image of page 51
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern