mdnode
¶
Enables extra connections to be made to nodes. This is useful for simulating wellbore connections, faults, and flow across internal boundaries.
- Group 1 - NUM_MD, MAX_CON, IELIM, SX_MULT
- Group 2 - NODE, IPAR, NPAR (repeated NUM_MD times)
Input Variable | Format | Default | Description |
---|---|---|---|
NUM_MD | integer | 0 | Number of new connections to be entered. |
MDMAX | integer | 0 | Maximum number of new connections to a given node. This does not include old connections. Thus, if a node was already connected to 5 neighboring nodes and two new connections were added to this node in this macro statement and this was the maximum number of connections added in this macro statement, then MDMAX = 2. |
I_ELIM | integer | 0 | IF I_ELIM Š 0, then no action. IF I_ELIM < 0, then nodal connections are eliminated as needed if redundant. |
SX_MULT | real*8 | 1.0 | Multiplier for equilibrium conditions. |
NODE | integer | 0 | Node to which new connection is established. |
IPAR | integer | 0 | IPAR is not used at present. Its value is ignored. However the entered number must be an integer. |
NPAR | integer | 0 | NPAR is the new connected node. If NPAR = NODE, no new connection is established. |
The following are examples of mdnode. In the first example (top), 3 new connections are specified, node 10 is connected to node 15, node 100 is connected to node 106, and node 10 is connected to node 320. A maximum of 2 new connections are allowed per node. The multiplier for equilibrium conditions is set to 10. In the second example (bottom), 4 new connections are specified, node 1 is connected to node 16, node 2 is connected to node 1, node 4 is connected to node 1 and node 10 is connected to node 203. A maximum of 3 new connections are allowed per node. The multiplier for equilibrium conditions is set to 100.
mdnode | |||
3 | 2 | 0 | 10 |
10 | 0 | 15 | |
100 | 0 | 106 | |
10 | 0 | 320 |
mdnode | |||
4 | 3 | 0 | 100 |
1 | 0 | 16 | |
2 | 0 | 1 | |
4 | 0 | 1 | |
10 | 0 | 203 |
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