# Results Analysis Objects

Results Analysis Objects can be used to interrogate results within a 2D Mesh. The objects can be used to display 2D simulation results using the pick graph and pick grid tool buttons on the Results Toolbar. Results for these objects can also be exported to CSV file.

Results Analysis Objects are stored in a Results Analysis item.

The object types available are:

For details on creating and editing these objects, see the Digitising Network Objects topic.

Note that the Results Analysis Objects are used as a tool to query a set of results that has already been generated. For more accurate results, use the Network result points, line and polygon objects, which provide results generated during the simulation.

The 2D Results point is used to view / export time varying results for the 2D mesh element in which the point is located. The available point results are:

Result |
Description |
---|---|

Depth |
Depth of water |

Direction |
Direction of flow. Angle in radians from due East. |

Elevation |
Elevation at time t, calculated as: elevation(t) = depth(t) + ground level |

Froude Number |
Froude Number at time t, calculated as: Fr(t) = velocity(t) /√(g+depth(t)) If depth(t) = 0 then Fr(t) = 0 Fr(t) is always > 0 |

Speed |
Velocity of water |

Unit Flow |
Flow per unit length (in 2D element). Unit Flow at time t, is calculated as: f(t) = depth(t) x speed(t) |

Cumulative Infiltration |
Cumulative infiltration depth. Only displayed when an infiltration surface is associated with the 2D zone. See 2D Infiltration Model for further information. |

Effective Infiltration |
Effective infiltration rate (derived from Cumulative infiltration result). Only displayed when an infiltration surface is associated with the 2D zone. See 2D Infiltration Model for further information. |

Concentration <PPP> dissolved 2D |
Concentration of dissolved pollutant, where <PPP> represents pollutant name. Only displayed for Water Quality simulations. |

Concentration <PPP> <SFX> 2D |
Concentration of pollutant by sediment fraction, where <PPP> represents pollutant name and <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

Concentration <SFX> 2D |
Concentration of sediment fraction, where <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

Coliforms 2D |
Concentration of coliforms. Only displayed for Water Quality simulations |

Water Temperature 2D |
Temperature of water. Only displayed for Water Quality simulations |

Saturated DO 2D |
Concentration of saturated dissolved oxygen. Only displayed when carrying out a Water Quality simulation including modelling of Dissolved Oxygen. |

The following time varying results are available for a Results Section:

Result |
Description |
---|---|

Flow through line |
For each 2D mesh element that the Results Section intersects: - The component of the unit flow normal to the line is determined
- The unit flow component is multiplied by the length of the line segment intersecting the element
The Flow through line result is calculated by summing the flows across each line segment. |

Highest depth along line | The maximum of the depth values of the 2D mesh elements intersected by the results section. |

Highest speed normal to line |
For each 2D mesh element that the Results Section intersect: - The value of the velocity component orthogonal to the line is determined.
The maximum of the calculated values is reported as the maximum speed. This is an absolute value. |

<PPP> dissolved flow through line |
Concentration of dissolved pollutant flowing across line, where <PPP> represents pollutant name. Only displayed for Water Quality simulations. |

<PPP> <SFX> flow through line |
Concentration of pollutant by sediment fraction flowing across line, where <PPP> represents pollutant name and <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

<SFX> flow through line |
Concentration of sediment fraction flowing across line, where <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

Highest concentration <PPP> dissolved along line |
The maximum of the dissolved pollutant concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

Highest concentration <PPP> <SFX> along line |
The maximum of the pollutant by sediment fraction concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

Highest concentration <SFX> along line |
The maximum of the sediment fraction concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

Lowest concentration <PPP> dissolved along line |
The minimum of the dissolved pollutant concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

Lowest concentration <PPP> <SFX> along line |
The minimum of the pollutant by sediment fraction concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

Lowest concentration <SFX> along line |
The minimum of the pollutant by sediment fraction concentration values of the 2D mesh elements intersected by the results section. Only displayed for Water Quality simulations. |

The following time varying results are available for a 2D Results Polygon:

Result |
Description |
---|---|

Flow through polygon boundary |
For each 2D mesh element that the 2D Results Polygon intersects: - The component of the unit flow normal to the boundary is determined
- The unit flow component is multiplied by the length of the boundary segment intersecting the element
The Flow through polygon boundary result is calculated by summing the flows across each boundary segment. Flow directed into the polygon is counted positive and flow directed out of the polygon is counted negative. |

Highest depth inside polygon |
The maximum of the depth values of the 2D mesh elements inside the results analysis polygon boundary. Only mesh elements with element centroid within the polygon boundary are included. |

Highest speed inside polygon |
The maximum of the speed values of the 2D mesh elements inside the results analysis polygon boundary. Only mesh elements with element centroid within the polygon boundary are included. |

Volume enclosed by polygon |
The Volume enclosed by polygon result is calculated as the sum of water depth x element area of all 2D mesh elements within the polygon boundary. Only mesh elements with element centroid within the polygon boundary are included in the calculation. |

Area flooded to inundation depth |
The Area flooded to inundation depth result is calculated as the sum of element areas of the 2D mesh elements within the polygon boundary with water depth exceeding the inundation threshold. (Inundation threshold is specified in the Advanced tab of the 2D Parameters Dialog.) Only mesh elements with element centroid within the polygon boundary are included in the calculation. |

Cumulative infiltration volume inside polygon |
Calculated as the sum of cumulative infiltration x element area of all 2D mesh elements within the polygon boundary. Only mesh elements with element centroid within the polygon boundary are included in the calculation. Only displayed when an infiltration surface is associated with the 2D zone. See 2D Infiltration Model for further information. |

<PPP> dissolved flow through polygon boundary |
Concentration of dissolved pollutant flowing across boundary, where <PPP> represents pollutant name. Only displayed for Water Quality simulations. |

<PPP> <SFX> flow through polygon boundary |
Concentration of pollutant by sediment fraction flowing across boundary, where <PPP> represents pollutant name and <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

<SFX> flow through polygon boundary |
Concentration of sediment fraction flowing across boundary, where <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

<PPP> dissolved mass inside polygon |
Concentration of dissolved pollutant within the polygon boundary, where <PPP> represents pollutant name. Only displayed for Water Quality simulations |

<PPP> <SFX> mass inside polygon |
Concentration of pollutant by sediment fraction within the polygon boundary, where <PPP> represents pollutant name and <SFX> represents sediment fraction name. Only displayed for Water Quality simulations. |

<SFX> mass inside polygon |
Concentration of sediment fraction within the polygon boundary, where <SFX> represents sediment fraction name Only displayed for Water Quality simulations. |

Highest concentration <PPP> dissolved inside polygon |
The maximum of the dissolved pollutant concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |

Highest concentration <PPP> <SFX> inside polygon |
The maximum of the pollutant by sediment fraction concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |

Highest concentration <SFX> inside polygon |
The maximum of the sediment fraction concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |

Lowest concentration <PPP> dissolved inside polygon |
The minimum of the dissolved pollutant concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |

Lowest concentration <PPP> <SFX> inside polygon |
The minimum of the pollutant by sediment fraction concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |

Lowest concentration <SFX> inside polygon |
The minimum of the sediment fraction concentration values of the 2D mesh elements inside the results analysis polygon. Only displayed for Water Quality simulations. |