FLOWARROWS

Function:

Allows flow arrows to be shown on isometric plots.

Description:

Flow arrows are normally shown for inline components. Inline flow arrows can also be plotted in any length of tube if an attachment point (ATTA) with its ATTY attribute set to FLOW has been created in the DESIGN module. The user can also instruct Isodraft to include automatic flow arrows by using the AUTOMATIC command.

The AUTOMATIC command uses the value of the branch FLOWDIRECTION attribute described in Data Model.

The settings for FLOWD are:

• BACK for flow from tail to head

• FORW for flow from head to tail.

• OFF to allow the arrows to be turned off

• BOTH to indicate a two-way flow.

• Any other setting will continue to be treated as FORWard.

Automatic flow arrows are output for each branch, and at each multi-way component, provided that a length of implied tube is available to take the arrow. The automatic flow arrows option will also output any FLOW ATTAs.

By default, the inline flow arrow option is set to off, so that flow arrows for tube are not normally shown.

Each type can be plotted independently, and the inline flow arrows can be scaled.

By default, the arrows point in the direction HEAD to TAIL; that is, FORWARD. They can be reversed by changing the branch FLOW attribute to BACKWARD.

Examples:

FLOWarrows ON

Flow arrows will be plotted for components.

FLOWarrows OFF

Flow arrows will not be plotted for components.

FLOWarrows INline ON

Flow arrows will be plotted for Flow ATTAs in tube.

FLOWarrows INline OFF

Flow arrows will not be plotted for Flow ATTAs in tube.

FLOWarrows INline SCAle 10

Inline flow arrows will be scaled by a factor of 10. The default scale factor is 8. The scale must be an integer between 5 and 15 inclusive.

FLOWarrows INline SCAle 10 AUTO

Inline flow arrows will be scaled by a factor of 10 and added automatically. The default scale factor is 8. The scale must be an integer between 5 and 15 inclusive.

Command Syntax:

                   .---------------------<----------------------.
                  /                                             |
 >- FLOWarrows --+------------+-- ON* --------------------------|
                 |            |                                 |
                 |            ‘-- OFF --------------------------|
                 |                                              |
                 ‘-- INline --+-- ON ------------.              |
                              |                  |              |
                              |-- SCAle-integer--+- AUTOmatic --|
                              |                  |              |
                              |                  ‘--------------|
                              |                                 |
                              ‘-- OFF* -------------------------+-->

Querying:

Q FLOWarrows

Q OPTions