[Example 3] Flow in a Sine-Generated Curve Channel ========================================================== --------------------------- Create Computational Grid --------------------------- From the main menu, select [Grid], [Select Algorithm to Create Grid] ( :numref:`03_koshi_0` ) .. _03_koshi_0: .. figure:: images/03/koshi_0.png :width: 300pt : Select Algorithm to Create Grid Select [Simple Grid Generator] in :numref:`03_koshi_1` , and click [OK]. .. _03_koshi_1: .. figure:: images/03/koshi_1.png :width: 350pt : Select Grid Creation Algorithm Set "Channel Shape" values as :numref:`03_koshi_2` .. _03_koshi_2: .. figure:: images/03/koshi_2.png :width: 350pt : Grid Creation: Channel Shape Set "Channel Bed Condition" values as :numref:`03_koshi_3` , and click [Create Grid]. Click [Yes(Y)] when you are asked ":numref:`03_koshi_4` . Then the grid creation is completed. .. _03_koshi_3: .. figure:: images/03/koshi_3.png :width: 350pt : Grid Creation: Channel Bed Condition .. _03_koshi_4: .. figure:: images/03/koshi_4.png :width: 130pt : Mapping？ Bed configuration and channel shape can be confirmed by putting checking marks at, [Grid], [Node attributes] and [Elevation (m)]. ( :numref:`03_koshi_5` ) .. _03_koshi_5: .. figure:: images/03/koshi_5.png :width: 350pt : Grid Creation Completed ------------------------- Computational Condition ------------------------- From the menu bar, select [Calculation Condition], [Settings] and [Calculation Condition] window, :numref:`03_joken_1` appears. .. _03_joken_1: .. figure:: images/03/joken_1.png :width: 400pt : Calculation Condition: Groups In :numref:`03_joken_1` , select [Discharge and downstream water surface elevation] and click [Edit]. .. _03_joken_2: .. figure:: images/03/joken_2.png :width: 400pt : Input discharge hydro graph Input discharge hydrograph as shown in :numref:`03_joken_2` and click [OK]. .. _03_joken_3: .. figure:: images/03/joken_3.png :width: 400pt : Time and bed erosion parameters Select [Time and bed erosion parameters] and set values as :numref:`03_joken_3` . .. _03_joken_4: .. figure:: images/03/joken_4.png :width: 400pt : 3D Velocity Profile Set [3D Velocity Profile] as :numref:`03_joken_4`, and click [Save and Close] ---------------------- Launch Computation ---------------------- .. _03_jikko_1: .. figure:: images/03/jikko_1.png :width: 90% :Launch Computational By selecting [Simulation] and [Run], a window as :numref:`03_jikko_1` appears, and the simulations starts. .. _03_jikko_2: .. figure:: images/03/jikko_2.png :width: 90% :Simulation Fished When the simulation finish, :numref:`03_jikko_2` appears. Then click [OK]. ------------------------------- Display Computational Results ------------------------------- After the companion finished, form the main menu, by selecting [Calculation Results] and [Open new 2D Post-Processing Window], a new Window appears as :numref:`03_kekka_1` . .. _03_kekka_1: .. figure:: images/03/kekka_1.png :width: 450pt :2D Post-Processing Window ^^^^^^^^^^^^^^^ Depth ^^^^^^^^^^^^^^^ In the object browser, put the check marks in "Scalar (node)" and "Depth[m]", right-click and select "Properties". The "Scalar Setting" window :numref:`03_kekka_2` appears. .. _03_kekka_2: .. figure:: images/03/kekka_2.png :width: 250pt :Scalar Setting Set the values as shown in :numref:`03_kekka_2`, and click [OK], then :numref:`03_kekka_3` appears. .. _03_kekka_3: .. figure:: images/03/kekka_3.png :width: 450pt : Depth Plot ^^^^^^^^^^^^^^^^^^^ Velocity vectors ^^^^^^^^^^^^^^^^^^^ In the object browser, put the check marks in "Arrow" and "Velocity", right-click and select "Properties". The "Arrow Setting" window :numref:`03_kekka_5` appears. Set the values as :numref:`03_kekka_5`, and click [OK]. .. _03_kekka_5: .. figure:: images/03/kekka_5.png :width: 250pt :Arrow Setting :numref:`03_kekka_6` shows the depth-averaged velocity vectors. .. _03_kekka_6: .. figure:: images/03/kekka_6.png :width: 450pt :Depth Averaged Velocity Vectors In :numref:`03_kekka_6`, you can select "Surface Velocity" and "Bottom Velocity" by checking each box in "Arrow" group. .. _03_kekka_7: .. figure:: images/03/kekka_7.png :width: 450pt : Surface Velocity Vectors .. _03_kekka_8: .. figure:: images/03/kekka_8.png :width: 450pt : Bottom Velocity Vectors ^^^^^^^^^^^^^^^^^^^ Stream Lines ^^^^^^^^^^^^^^^^^^^ Uncheck the box by "Arrow" in the Object Browser and check a box by "Streamline". By checking "Velocity", the streamlines following the depth averaged flow velocity" :numref:`03_kekka_9` will be displayed. By checking "Surface Velocity", the streamline following the surface velocity" :numref:`03_kekka_10` will be displayed. By checking "Bottom Velocity", the streamline following the bottom velocity ne: numref:`03_kekka_11` will be displayed. .. _03_kekka_9: .. figure:: images/03/kekka_9.png :width: 450pt :Streamlines by depth averaged velocity .. _03_kekka_10: .. figure:: images/03/kekka_10.png :width: 450pt :Streamlines by surface velocity .. _03_kekka_11: .. figure:: images/03/kekka_11.png :width: 450pt :Streamlines by bottom velocities The effect of the secondary flow is clearly shown. ^^^^^^^^^^^^^^^^^^^^^^^ Particle Animation ^^^^^^^^^^^^^^^^^^^^^^^ In the object browser, uncheck the box of [Streamlines], and check the boxes of [Particles] and [Velocity], and set the time bar back to zero, as shown in :numref:`03_kekka_12` Click small black play button, and particle animation starts as :numref:`03_kekka_13`, which shows the particles following depth averaged flow. .. _03_kekka_12: .. figure:: images/03/kekka_12.png :width: 450pt : Starting of Particle Animation .. _03_kekka_13: .. figure:: images/03/kekka_13.gif :width: 450pt : Animation of particles following the depth averaged velocity In the same way, the particle flowing animations can be played by checking a box at [Surface Velocity], and [Bottom Velocity], respectively. .. _03_kekka_14: .. figure:: images/03/kekka_14.gif :width: 450pt : Animation of particles following the surface velocity .. _03_kekka_15: .. figure:: images/03/kekka_15.gif :width: 450pt : Animation of particles following the bottom velocity