Weir height test case (Water Module): Difference between revisions
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==Variations== | ==Variations== | ||
Changing the | ====Weir adjustment interval==== | ||
Changing the [[Weir move interval s (Water Overlay)|WEIR_MOVE_INTERVAL_S]] from 10 seconds to 1 second: | |||
<ul> | <ul> | ||
: Weir with an adjusting height: | : Weir with an adjusting height: | ||
| Line 165: | Line 166: | ||
: Outlet: | : Outlet: | ||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_flow_1s.png|x300px|border]]</li> | <li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_flow_1s.png|x300px|border]]</li> | ||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_a.png|x300px|border]]</li> | |||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_b.png|x300px|border]]</li> | |||
</ul> | |||
====Weir move step==== | |||
Changing the [[Weir move interval s (Water Overlay)|WEIR_MOVE_INTERVAL_S]] from 0.01 meter to 0.1 meter: | |||
<ul> | |||
: Weir with an adjusting height: | |||
<li style = "display:inline-block">[[File:weir_test_case_weir_adjusting_height_0_1m.png|x300px|border]]</li> | |||
<li style = "display:inline-block">[[File:weir_test_case_weir_adjusting_flow_0_1m.png|x300px|border]]</li> | |||
<li style = "display:inline-block">[[File:weir_test_case_weir_adjusting_datum_a_0_1m.png|x300px|border]]</li> | |||
<li style = "display:inline-block">[[File:weir_test_case_weir_adjusting_datum_b_0_1m.png|x300px|border]]</li> | |||
: Inlet: No changes. | |||
: Outlet: | |||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_flow_0_1m.png|x300px|border]]</li> | |||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_a.png|x300px|border]]</li> | <li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_a.png|x300px|border]]</li> | ||
<li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_b.png|x300px|border]]</li> | <li style = "display:inline-block">[[File:weir_test_case_outlet_adjusting_datum_b.png|x300px|border]]</li> | ||
Revision as of 17:11, 16 January 2023
This page contains information how to inspect weir flow for Water Overlays. It also sets up a test case, which is described first.
Description
This test case consists of several weirs situated in a waterway, with each weir having different properties. All weirs are part of the same Water Overlay's simulation. There is no rainfall in this test case. Instead water flow is provided by inlets and outlets, which can be set up either variable or constant.
Weir test case top down.
Boundary and initial conditions
- Waterways with weirs in the middle, separating two water areas.
- One inlet per waterway providing an influx of water, situated in the water area on the left.
- One outlet per waterway providing an outflux of water, situated in the water area on the right.
Parameter values
- Manning’s n: 0.03 (uniform)
- Model grid resolution: 1m
Technical setup
Waterways
Four waterways with a water depth of 2m and an angle of repose of 35 degrees, drawn with the following polygons:
- [187.0, -249.288], [418.0, -256.288]
- [413.0, -333.288], [189.0, -326.288]
- [194.0, -375.287], [411.0, -382.287]
- [404.0, -447.430], [194.0, -440.430]
Water Areas
Two areas divide the water ways into two sections:
- Water area (left)
- Rectangle shape: [301.0, -226.466], [158.884, -464.466]
- WATER_LEVEL = 0.0;
- Water area (right)
- Rectangle shape: [424.884, -226.466], [301.0, -464.466]
- WATER_LEVEL = 0.0;
Inlets
- Inlet (Constant):
- Rectangle shape: [189.82, -254.350], [202.08, -251.510]
- INLET_AREA = 1.0;
- INLET_Q = 1.0;
- LOWER_THRESHOLD = -10 000 (inactive);
- UPPER_THRESHOLD = -10 000 (inactive);
- Inlet (Manual)
- Rectangle shape: [192.116, -331.225], [199.453, -328.390]
- INLET_AREA = 1.0;
- INLET_Q = 1.0;
- LOWER_THRESHOLD = -10 000 (inactive);
- UPPER_THRESHOLD = -10 000 (inactive);
- Inlet (Adjusting)
- Rectangle shape: [197.019, -444.276], [204.623, -441.738]
- INLET_AREA = 1.0;
- INLET_Q = [0, 1, 600, 1, 900, 1.5, 1200, 1.5, 1800, 1.5, 2400, 1, 3600, 1];
- LOWER_THRESHOLD = -10 000 (inactive);
- UPPER_THRESHOLD = -10 000 (inactive);
Outlets
Each outlet is set up with the following attributes to remove the water that passed through the weir:
- INLET_AREA = 1.0;
- INLET_Q = 0;
- UPPER_THRESHOLD = -0.5;
The outlets are situated at:
- Outlet (Constant):
- Rectangle shape: [414.554, -250.689] , [396.786, -253.873]
- Outlet (Manual):
- Rectangle shape: [410.115, -327.753] , [ 393.13, -330.9620 ]
- Outlet (Adjusting):
- Rectangle shape: [ 401.072, -442.541 ], [ 383.968, -445.520 ]
Weirs
Each weir is setup using a rectangular shape, and direction angle and a weir height and width:
- WEIR_ANGLE = 270 degrees;
- WEIR_HEIGHT = 0 m;
- WEIR_WIDTH = 5 m;
Weir specific:
- Weir (Constant)
- Rectangular shape: [ 299.593, -248.328 ] , [ 302.229, -257.983 ]
- Weir (Manual)
- Rectangular shape: [ 298.675, -324.174 ] , [ 301.613, -335.662 ]
- WEIR_HEIGHT = [ 0 0 600 0.2 1200 0.2 1500 0.2 1800 -0.5 2400 -0.5 2700 0 ];
- Weir (Adjusting)
- Rectangular shape: [ 298.406, -437.681 ] , [ 301.142, -449.731 ]
Overlay settings
General parameters that have been used:
- Type of overlay: Rainfall Overlay
- Weather:
- Evaporation: 0 mm
- Rain: 0 mm
- Simulate for: 1.5 hours.
- Groundwater: 0 (off)
- Calculation mode: Accuracy
- Output results: Surface last value, Surface last datum and Surface elevation
- WEIR_DAM_MULTIPLIER is set to 3;
- WEIR_MOVE_RANGE_M is set to 1 meter;
- WEIR_MOVE_INTERVAL_S is set to 10 seconds;
- WEIR_MOVE_STEP_M is set to 0,01 meter.
Output
Measured object graphs are displayed below.
Weir with constant height
- Weir with a constant height:
- Inlet:
- Outlet:
Weir with manual configured changing height
- Weir with a manual configured changing height:
- Inlet:
- Outlet:
Weir with adjusting height
- Weir with an adjusting height:
- Inlet:
- Outlet:
Variations
Weir adjustment interval
Changing the WEIR_MOVE_INTERVAL_S from 10 seconds to 1 second:
- Weir with an adjusting height:
- Inlet: No changes.
- Outlet:
Weir move step
Changing the WEIR_MOVE_INTERVAL_S from 0.01 meter to 0.1 meter:
- Weir with an adjusting height:
- File:Weir test case weir adjusting height 0 1m.png
- File:Weir test case weir adjusting flow 0 1m.png
- File:Weir test case weir adjusting datum a 0 1m.png
- File:Weir test case weir adjusting datum b 0 1m.png
- Inlet: No changes.
- Outlet:
- File:Weir test case outlet adjusting flow 0 1m.png
