2 Copyright (C) 2015-2016 EDF
4 This file is part of SALOME HYDRO module.
6 SALOME HYDRO module is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 SALOME HYDRO module is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with SALOME HYDRO module. If not, see <http://www.gnu.org/licenses/>.
19 #########################################
21 #########################################
23 .. |deuxSections| image:: ../_static/deuxSections.png
26 .. |deuxExtremites| image:: ../_static/deuxExtremites.png
29 .. |bringTogether| image:: ../_static/bringTogether.png
32 .. |deuxPointsConfondus| image:: ../_static/deuxPointsConfondus.png
35 .. |contourFermeDeuxSections| image:: ../_static/contourFermeDeuxSections.png
38 .. |domaineMaritime| image:: ../_static/domaineMaritime.png
41 .. |zonePont| image:: ../_static/zonePont.png
44 .. |raffinement| image:: ../_static/raffinement.png
47 .. |completeSplitDialog| image:: ../_static/completeSplitDialog.png
50 .. |zonesSplitCreees| image:: ../_static/zonesSplitCreees.png
53 .. |zonePontSplit| image:: ../_static/zonePontSplit.png
56 .. |zoneAmontSplit| image:: ../_static/zoneAmontSplit.png
59 .. |zoneAvalSplit| image:: ../_static/zoneAvalSplit.png
62 .. |mergeZonesPont| image:: ../_static/mergeZonesPont.png
65 .. |pilesDePont| image:: ../_static/pilesDePont.png
68 .. |objetsPont| image:: ../_static/objetsPont.png
71 Only single section polylines have thus far been addressed.
72 The use of several sections in polylines enables, for example, the combination of splines
73 and broken lines in a single contour.
74 Polyline operations (merge, split, copy, paste) can be used, for instance,
75 to create contours that share an edge before the calculation case is created.
77 Maritime domain boundaries
78 ==========================
80 A maritime domain is often bounded by a coastline, described in detail,
81 and by the simplest possible broken line offshore.
83 Details of the coastline are captured and entered in the form of an open polyline spline.
85 The sea boundary is captured in a second section of the same polyline.
87 To create a second section, you need to edit the polyline that represents the coastline:
88 click on *insert new section* and choose a line of the open *polyline* type,
89 then use the *Add* button to validate the section creation.
91 As section 2 is already selected, use the *Addition mode* button to start adding points.
92 The aim when creating the broken line is to place the first and last points in the approximate
93 vicinity of the coast line endpoints.
97 The endpoints of the two sections must now be made to correspond exactly so as to obtain a closed contour.
99 To do so, select both sections simultaneously (shift key)
100 and switch to *modification mode* (modification mode button).
102 Next, in the view window, select both of the first two endpoints to be brought together
103 by dragging a selection box around them with the mouse (after having zoomed in, if necessary).
107 The coordinates of the two points are displayed, as well as the distance between the two points,
108 in the distance column.
110 Note that the right hand button has become active (two sections must be selected).
114 When the button is clicked, the two points are superimposed, their coordinates are updated
115 and the displayed distance changes to zero.
117 |deuxPointsConfondus|
119 The same procedure needs to be applied to the other two endpoints, then validate with *Apply and close*.
121 The polyline now represents a closed contour consisting of 2 sections of different types.
123 |contourFermeDeuxSections|
125 * **Note**: When the points are superimposed, one moves to the coordinates of the other.
126 Controlling which of the points remains fixed is not an easy task;
127 therefore it is best to avoid having too much distance between them in order to prevent
128 any deformation of the coastline.
130 The contour must then be converted into a natural object, providing the maritime domain.
134 Creating sections on a minor bed: dams, bridges
135 ===============================================
137 A minor river bed can be divided into several sections to which specific treatment options can be applied.
140 * The zone around a bridge, where explicit description of the bridge piers is likely to impose a specific mesh,
141 if the rest of the minor bed is meshed in stretched triangles in the direction of the flow path.
143 * A dam for which one wants to write, for example, the boundary conditions describing its operation.
144 The dam will then be defined as a "non floodable" or "insubmersible" zone across the minor bed.
146 * A zone for which the user wants to tailor the mesh.
148 Creating a specific zone around a bridge over the minor bed
149 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
151 Taking the previous example on the Garonne, begin by drawing a rectangle across the *garonne* minor bed,
152 extending clearly beyond the riverbanks on both sides. Name the polyline rectangle *zonePont* (zoneBridge).
156 **The polyline of the minor bed needs to be sufficiently refined for the cutting to be precise
157 and to avoid problems when creating the calculation case afterwards.**
158 If necessary, the polyline of the minor bed should be edited to add points on both sides
159 of the cross-section lines.
160 **There must always be at least one point between two cut lines of a spline curve**.
164 Use the *Split polylines* command from the *garonne* polyline context menu and open the *Complete split* tab.
165 Select the *zonePont* polyline then click on the *include* button to have both polylines in the dialog list view.
167 |completeSplitDialog|
169 After validating with *Apply and close*, four new polylines are obtained to describe the minor bed
170 and four to describe the bridge zone.
174 The new zones will be reconstructed by joining the polylines together, set by set,
175 with the *Merge polylines* command.
177 The bridge zone is composed of the following four polylines:
181 The upstream minor bed zone is composed of two polylines:
185 The downstream minor bed zone is composed of two polylines:
189 To join the polylines, select any one of them and click on the *Merge polylines* command in the context menu.
190 You now need to select the four polylines, click on the *include* button, assign a name to the new polyline, *litMineurPont* ("minorBedBridge") and confirm the command by clicking on *Apply and close*.
194 The *litMineurAmont* ("upstreamMinorBed") and *litMineurAval* ("downstreamMinorBed") polylines are created
195 in the same way. The three new polylines serve to define three immersible zones: *litMineur_aval*,
196 *litMineur_amont* and *litMineur_pont*.
198 If one wants to have bridge piers modelled in the mesh, these need to be represented as polylines
199 and non-submersible zones defined.
205 Creating a specific zone around a dam on the minor bed
206 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
208 The principle is exactly the same as for the bridge, but without the piers.
212 :ref:`ref_english_casParticuliers`
