Name

atemperatures — Ambient temperatures block

Synopsis

atemperatures id
  value v dof list nodes...
  ...
end

Description

atemperatures specifies ambient temperature values at nodes for defining convective conditions in heat analysis in conjunction with the heat convection 'overlay' elements (Elements for Heat Transfer Analysis), id defining the set number (a positive integer). To specify temperatures at nodes inducing thermal strains in stress analysis, please refer to the temperatures command. An atemperatures set is identified by id, a non-negative integer which must be unique for the atemperatures conditions of the current model. id is the number which is referenced by the atemperatures option of the case definition. Sets with an id of 0 will be active for all analysis cases.

Specifying Ambient Temperatue Values

value v

Specifies the current ambient temperature assigned to subsequently specified nodes.

Assigning Ambient Temperature Values

The following directives are available to assign the specified ambient temperature value(s) to individual nodes and to collections of nodes:

allnodes

Assign the ambient temperature values to all defined nodes of the current branch.

branch br

For models that consist of several branches. Specifies the external branch number br. To be used in conjunction with the allnodes and nodes directives.

epatch id p1-p8|e1-e12|f1-f6|b

When the discretization of a part of the discretization was created by means of the epatch command, a number of pre-defined nodelists are available for use with the nbc command. The epatch is identified by id.

Individual patch vertex nodes are specified with p1 to p8.

The collection of nodes that are located at a patch edge are specified with e1 to e12.

The collection of nodes that are located at a patch face are specified with f1 to f6.

The collection of nodes of the whole patch body are specified with b.

nodes list

Specifies a list of nodes (of the current branch) to which the ambient temperature value will be assigned.

nodelist name

Specifies the name of the node list to which the ambient temperature value will be assigned.

nodeset name

Specifies the name of the node set to which the ambient temperature value will be assigned.

Additional information

case command: Activates ambient temperatures sets.

The command atemperatures generates the dataset(s) ATEMP.branch.0.0.id, where branch designates the branch number and id the set identifier.