Flexcom > Data Inputs > $LOAD CASE

Purpose

To specify the name of the Flexcom analysis of the upstream structure subjected to the free or undisturbed stream current velocity field.

Theory

Refer to Wake Interference for further information on this feature.

Note also that the old *WAKE INTERFERENCE and *UPSTREAM STRUCTURE keywords have effectively been superseded by the new wake interference keywords which are more generic and provide additional functionality. Refer to *WAKE UPSTREAM and *WAKE DOWNSTREAM for further information.

Keyword Format

Blocks of two lines.

[FILE=Full Path of Flexcom Current Analysis File]

[SET=Element Set Name]

The use of *UPSTREAM STRUCTURE is compulsory (in the same analysis) if *WAKE INTERFERENCE is invoked. One or other of the two lines must be present. The file name should be specified without extension. If it contains spaces, then it should be enclosed in double quotation marks. Element Set Name is an existing element set, which must be defined in the initial static analysis of the upstream structure.

The FILE= input is the name of the file for the static or quasi-static analysis with current of the upstream structure. It is required if the two structures under consideration are being analysed in separate models. It is omitted where the upstream and downstream structures are included in the same model. In the former case, SET= may be optionally invoked to specify which elements of the model in the file are to be included in the wake calculations; the default is all elements. In the latter case, SET= is required to identify the elements of the combined model which comprise the upstream structure; no default is possible in this case.

Table Input

Input:	Description
Flexcom File:	The name of the Flexcom analysis file. You do not need to include a file extension. See Note (b).
Set Name:	The name of the set that contains the elements on the upstream structure that you want to include in the wake interference analysis. The default is All.

Notes

(a)If the two structures are in separate models, then the Flexcom File input is mandatory, and the specification of a Set Name is optional; by default all of the elements in the Flexcom File model constitute the upstream structure. If the two structures are in the same model, then the Flexcom File input should be omitted. In this case the specification of a Set Name other than All is mandatory; since the two structures are in the same model, then the upstream structure cannot consist of all of the elements in that model.