DATA SET 16. NEUMANN BOUNDARY CONDITIONS

Four groups of records are required. The first group is used to read Neumann flux profiles, the second group is used to read the Neumann boundary nodal points, the third group is used to read the type of Neumann flux profile assigned to each of the NCNP Cauchy nodal points, and the fourth group is for the boundary side informations of the Neumann sides. This data set is required if and only if NNNP > 0.

(a) Prescribed Neumann-Flux Profiles: There are NNPR records in this subset. The number of lines in each record depends on NNDP. The I-th (I = 1, 2, ..., NNPR) record (boundary profiles), in FREE FORMAT, contains the following variables:

1. TQNBF(1,I) = Time of the first data point in the I-th profile, (T).

2. QNBF(1,I) = Normal Neumann flux of the first data point in the I-th profile, (L**3/T/L**2); positive out from the region, negative into the region.

3. TQNBF(1,I) = Time of the second data point in the I-th profile, (T).

4. QNBF(1,I) = Normal Neumann flux of the second data point in the I-th profile, (L**3/T/L**2); positive out from the region, negative into the region.

Up to NNDP data points.

(b) Global node numbers of the Neumann nodes. At most, NNNP records are needed for this subdata set, one each for NNNP Neumann nodes. This record, in free format, contains the following variables:

1. NPNB(1) = Global node number of the first Neumann nodes.

2. NPNB(2) = Global node number of the second Neumann nodes..

Up to NNNP data points.

(c) Type of Neumann Flux Profiles Assigned to the NNES sides: At most NNES records are needed. However, automatic generation can be made. Note that this subset must be repeated NDF times to cover all of the pore regions. The I-th (I = 1, 2, ..., ) record, in FREE FORMAT, contains the following variables:

1. MI = Compressed Neumann side number of the first side in the sequence.

2. NSEQ = NSEQ sides will be generated automatically.

3. MIAD = Increment of MI for each of the NSEQ sides.

4. MITYP = Type of Neumann flux profile assigned to side MI.

5. MTYPAD = Increment of MITYP for each of the NSEQ sides.

NOTE: A line with 5 0's is used to signal the end of this data set.

(d) Neumann Boundary Element Sides: Normally, NNES records are required, one each for a Neumann boundary element side. However, if a group of Neumann boundary element sides appears in a regular pattern, automatic generation may be made. The I-th (I = 1, 2, ..., ) record, in FREE FORMAT, contains the following variables.

1. MI = Compressed Neumann side number of the first side in sequence.

2. NSEQ = NSEQ subsequent Neumann sides will be generated automatically.

3. MIAD = Increment of MI for each of the NSEQ subsequent sides.

4. I1 = Global node number of the first node on the Neumann element-side MI.

5. I2 = Global node number of the second node on Neumann element-side MI.

6. I3 = Global node number of the third node on the Neumann element-side MI.

7. I4 = Global node number of the fourth node on the Neumann element-side MI.

8. I1AD = Increment of I1 for each of the NSEQ subsequent element-sides.

9. I2AD = Increment of I2 for each of the NSEQ subsequent element-sides.

10. I3AD = Increment of I3 for each of the NSEQ subsequent element-sides.

11. I4AD = Increment of I4 for each of the NSEQ subsequent element-sides.

NOTE: A line with 11 0's is used to end this data set.

Return to MurfMd home page.
Back to data set 15: Cauchy boundary.
On to data set 17: End of Job.