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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:03
In InfoWorks ICM, an ancillary control object, such as a weir or a pump, represents a flow control structure.
00:12
Ancillary controls are assumed to have zero length, and like a conduit, the ancillary control is defined as a link between two nodes.
00:22
When working with Real Time Control,
00:25
you set up the state of ancillary regulator structures to change according to the state of sensors elsewhere in the network.
00:33
The different types of ancillary controls have different data requirements.
00:38
An important factor to consider when setting up ancillaries is flow direction.
00:43
The following types of control links can have different flow characteristics for the two directions of flow:
00:50
Pumps, vortex controls, flap valves, orifices.
00:56
For these links, it is important to correctly define the link in the positive direction of flow, or your simulation results will be incorrect.
01:06
Some controls should only be used with flow in one direction.
01:10
You should ensure that reverse flow does not occur at broad crested weirs, siphons, and flumes during simulation.
01:18
All other controls are treated as hydraulically identical for both directions of flow.
01:24
Some of the ancillaries available in InfoWorks ICM include:
01:29
Pumps:
01:30
A pump always moves flow from upstream to downstream,
01:34
and is controlled by the switch on and switch off levels for the water level in the upstream node.
01:40
Therefore, it is important to choose the direction of flow of the control link correctly.
01:46
Several types of pump characteristics are supported, such as a fixed discharge pump and a rotodynamic pump.
01:55
Complex operating arrangements can be modelled with the use of real time control.
02:01
Sluice Gates:
02:03
Sluice gates or penstocks are commonly used as an outflow control on storage tanks or ponds.
02:11
ICM assumes the opening shape is rectangular.
02:15
You can set a sluice as a radial gate or vertical gate.
02:19
The gate can be set to a fixed opening or adjusted to automatic operation during the analysis.
02:27
Orifice Controls:
02:29
An orifice plate may be used to control the discharge within the network.
02:35
ICM assumes that there is a circular hole for the flow to pass through.
02:40
It is possible to set a limiting discharge in the positive direction of flow.
02:46
Weirs:
02:47
Weirs are commonly used for overflow structures and to control levels in storage ponds and rivers.
02:54
Weir controls have the same characteristics for flow in both directions apart from broad crested and gated weirs.
03:03
Available weir types in ICM include standard weir, vee notch weir, variable width weir, and variable crest weir.
03:13
Flumes:
03:15
Flumes are effectively constrictions in a channel or pipe, and are generally used to facilitate accurate flow measurements.
03:23
Flumes can be constructed to have rectangular, u-shaped, or trapezoidal cross-sections.
03:30
Normally, you would use a flume that has the same type of cross-section as the channels or pipes on either side.
03:38
Screens:
03:39
A screen is used to trap debris in the network, possibly at the entrance to treatment works.
03:46
The screen link in ICM can be used to represent the headloss across clean vertical or sloping bar screens.
03:54
It is more appropriate to represent horizontal or mesh screens using a user-defined control link.
04:02
Flap Valves:
04:04
A flap valve is a control that prevents reverse flow.
04:08
Typically, they are found at outfall or tank outlets.
04:12
Both circular and rectangular flap values can be represented.
04:17
The minimum dimension is 0.04m.
04:22
User-Defined Controls:
04:25
Two types of user-defined control can be specified in ICM.
04:29
Compound weir/orifice is used for control structures that do not follow the standard equations
04:36
and have the same flow characteristics in both directions.
04:40
A vortex control is similar to the compound type, but you can define different characteristics for the two directions of flow.
04:49
Blockages:
04:50
A blockage can be used in a channel, conduit, or river reach, or it can be associated with a bridge opening.
04:59
The blockage is assumed to be vertical, so the same proportion of the flow area is obstructed regardless of water level.
05:07
Ancillary data can be edited in either the respective Grid View of the Links Grid or the Object Property Sheet.
05:16
However, to view and edit all ancillary link data, use the Grid View.
05:21
Many of the ancillary control equations and parameters are based on British standards.
05:27
For detailed explanations of the equations used for the different types of ancillary links, refer to InfoWorks ICM Online Help.
Video transcript
00:03
In InfoWorks ICM, an ancillary control object, such as a weir or a pump, represents a flow control structure.
00:12
Ancillary controls are assumed to have zero length, and like a conduit, the ancillary control is defined as a link between two nodes.
00:22
When working with Real Time Control,
00:25
you set up the state of ancillary regulator structures to change according to the state of sensors elsewhere in the network.
00:33
The different types of ancillary controls have different data requirements.
00:38
An important factor to consider when setting up ancillaries is flow direction.
00:43
The following types of control links can have different flow characteristics for the two directions of flow:
00:50
Pumps, vortex controls, flap valves, orifices.
00:56
For these links, it is important to correctly define the link in the positive direction of flow, or your simulation results will be incorrect.
01:06
Some controls should only be used with flow in one direction.
01:10
You should ensure that reverse flow does not occur at broad crested weirs, siphons, and flumes during simulation.
01:18
All other controls are treated as hydraulically identical for both directions of flow.
01:24
Some of the ancillaries available in InfoWorks ICM include:
01:29
Pumps:
01:30
A pump always moves flow from upstream to downstream,
01:34
and is controlled by the switch on and switch off levels for the water level in the upstream node.
01:40
Therefore, it is important to choose the direction of flow of the control link correctly.
01:46
Several types of pump characteristics are supported, such as a fixed discharge pump and a rotodynamic pump.
01:55
Complex operating arrangements can be modelled with the use of real time control.
02:01
Sluice Gates:
02:03
Sluice gates or penstocks are commonly used as an outflow control on storage tanks or ponds.
02:11
ICM assumes the opening shape is rectangular.
02:15
You can set a sluice as a radial gate or vertical gate.
02:19
The gate can be set to a fixed opening or adjusted to automatic operation during the analysis.
02:27
Orifice Controls:
02:29
An orifice plate may be used to control the discharge within the network.
02:35
ICM assumes that there is a circular hole for the flow to pass through.
02:40
It is possible to set a limiting discharge in the positive direction of flow.
02:46
Weirs:
02:47
Weirs are commonly used for overflow structures and to control levels in storage ponds and rivers.
02:54
Weir controls have the same characteristics for flow in both directions apart from broad crested and gated weirs.
03:03
Available weir types in ICM include standard weir, vee notch weir, variable width weir, and variable crest weir.
03:13
Flumes:
03:15
Flumes are effectively constrictions in a channel or pipe, and are generally used to facilitate accurate flow measurements.
03:23
Flumes can be constructed to have rectangular, u-shaped, or trapezoidal cross-sections.
03:30
Normally, you would use a flume that has the same type of cross-section as the channels or pipes on either side.
03:38
Screens:
03:39
A screen is used to trap debris in the network, possibly at the entrance to treatment works.
03:46
The screen link in ICM can be used to represent the headloss across clean vertical or sloping bar screens.
03:54
It is more appropriate to represent horizontal or mesh screens using a user-defined control link.
04:02
Flap Valves:
04:04
A flap valve is a control that prevents reverse flow.
04:08
Typically, they are found at outfall or tank outlets.
04:12
Both circular and rectangular flap values can be represented.
04:17
The minimum dimension is 0.04m.
04:22
User-Defined Controls:
04:25
Two types of user-defined control can be specified in ICM.
04:29
Compound weir/orifice is used for control structures that do not follow the standard equations
04:36
and have the same flow characteristics in both directions.
04:40
A vortex control is similar to the compound type, but you can define different characteristics for the two directions of flow.
04:49
Blockages:
04:50
A blockage can be used in a channel, conduit, or river reach, or it can be associated with a bridge opening.
04:59
The blockage is assumed to be vertical, so the same proportion of the flow area is obstructed regardless of water level.
05:07
Ancillary data can be edited in either the respective Grid View of the Links Grid or the Object Property Sheet.
05:16
However, to view and edit all ancillary link data, use the Grid View.
05:21
Many of the ancillary control equations and parameters are based on British standards.
05:27
For detailed explanations of the equations used for the different types of ancillary links, refer to InfoWorks ICM Online Help.
In InfoWorks ICM, an ancillary control object, such as a weir or a pump, represents a flow control structure. Ancillary controls are assumed to have zero length, and like a conduit, the ancillary control is defined as a link between two nodes. When working with Real Time Control, the state of ancillary regulator structures are set up to change according to the state of sensors elsewhere in the network.
The different types of ancillary controls have different data requirements.
All other controls are treated as hydraulically identical for both directions of flow.
Some of the ancillaries available in InfoWorks ICM include:
Ancillary data can be edited in either the respective Grid View of the Links Grid or the Object Property Sheet. However, to view and edit all ancillary link data, use the Grid View. Many of the ancillary control equations and parameters are based on British standards. For detailed explanations of the equations used for the different types of ancillary links, refer to InfoWorks ICM Online Help.
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