CACONV

Bulk Data Entry Defines an interface for forced convection heat transfer using CAFLUID.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CACONV ID PID SSID MSID NODE

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CACONV 7 1 233 225 1

Definition

Field Contents SI Unit Example
ID Forced convection interface identification number.

No default (Integer > 0)

 
PID Identification number of a PCONV property entry.

No default (Integer > 0)

 
SSID Secondary entry identification number. This should refer to a GRID SET consisting of CAFLUID grids.

No default (Integer > 0)

 
MSID Main entry identification number. This should refer to either a SURF entry or an ELEMENT SET that identifies the convection surface on which the CHBDYE surface elements and CONV entries are to be generated.

No default (Integer > 0)

 
NODE Controls how the convection area is applied to the corresponding CAFLUID grids. That is, the TA grid on the CONV entry depends on this NODE option.
0
Convection area of a surface segment (in MSID) is applied to the geometrically closest CAFLUID Node (in SSID).
1
Convection area of a surface segment (in MSID) is applied to Grid G1 of the geometrically closest CAFLUID element (based on SSID).
2 (Default)
Convection area of a surface segment (in MSID) is applied to Grid G2 of the geometrically closest CAFLUID element (based on SSID).
Note: Convection area of a surface segment is the surface area associated with a convection element (3D element face belonging to the surface, or 2D shell element area).
 

Comments

  1. The presence of the CACONV Bulk Data referring to a PCONV entry leads to automatic generation of CONV and CHBDYE Bulk Data Entries.
  2. CAFLUID element represents 1D elements which can conduct heat and transmit fluid through mass flow. The PID field points to a PAFLUID Bulk Data that determines the element property.
  3. The internally generated CONV entries and CHBDYE elements along with the CAFLUID elements can be output to dedicated *_CAFLUID.fem and *_CONV.fem files when PARAM, CACONV, YES is added to the model.