Abaqus Keywords Reference Guide  
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*FLUID PIPE CONNECTOR LOSS
Specify fluid pipe connector element loss.

This option is used to specify the loss that happens during fluid flow through a fluid pipe connector element. It must be used in conjunction with the *FLUID PIPE CONNECTOR SECTION option.

Product: Abaqus/Standard  

Type: Model data

Level: Part,  Part instance  

Reference:

Required parameter:

TYPE

Set TYPE=CONNECTION to define the connector loss parameters.

Set TYPE=DARBY3K to compute the connector loss using the Darby 3K method.

Set TYPE=HOOPER2K to compute the connector loss using the Hooper 2K method.

Set TYPE=USER to compute the connector loss parameters using user subroutine UFLUIDCONNECTORLOSS.

Optional parameters:

LAMINAR FLOW TRANSITION

This parameter is valid only when TYPE=HOOPER2K or TYPE=DARBY3K.

Set this parameter equal to the Reynold's number for the flow in the connector below which the linear formulation is used. If this parameter is omitted, the default value is 1.0.

VALVE CONTROL

Set this parameter equal to USER to define a valve behavior for the connector in user subroutine UFLUIDCONNECTORVALVE. If this parameter is omitted, no valve behavior is defined and the fluid is fully flowing.

Data line to define connector loss (TYPE=CONNECTION): 

First (and only) line:

  1. Hydraulic area.

  2. Hydraulic diameter.

  3. Connector loss when the flow is in the direction determined by the element connectivity.

  4. Connector loss when the flow is opposite to the direction determined by the element connectivity.

Data line to define connector loss (TYPE=DARBY3K): 

First (and only) line:

  1. Hydraulic area.

  2. Hydraulic diameter.

  3. Resistance coefficient for the 3K method.

  4. Resistance coefficient for the 3K method.

  5. Resistance coefficient for the 3K method.

Data line to define connector loss (TYPE=HOOPER2K): 

First (and only) line:

  1. Hydraulic area.

  2. Hydraulic diameter.

  3. Resistance coefficient for the 2K method.

  4. Resistance coefficient for the 2K method.

Data line to define connector loss (TYPE=USER): 

First (and only) line:

  1. Hydraulic area.

  2. Hydraulic diameter.