New Name '1' Model 1 File model1.sdb Return
Option FEM Frequency Fluid Return
Import Mesh Format Nastran File xiaoyinqi\1.dat Return
Material Fluid
Name 'air'
Sound Real 3.4000e+002 Rho Real 1.2250e+000
Elements All
Return
Set 10 Name " inlet"
Faces 228 To 229 234 238 259 To 260 267 270 290 To 291 296 298 322 To 323 330 1104
Faces 1106 1112 1114 1117 1119 1124 1126 1387 To 1389 1391 1396 To 1397 1399 To 1400
Faces 1403 To 1404 1406 1408 1411 To 1412 1414 1416 1418 To 1420 1422 1426 To 1427
Faces 1429 To 1430 1451 1455 1483 1485 1492 To 1493 1496 1502 1505 1509 To 1510
Faces 1513 To 1516 1518 1522 To 1523 1525 To 1526 1528 To 1531 1537 To 1538 1540
Faces 1542 1545 To 1547 1549 1552 3356 3359 To 3367 3369 To 3406
Return
Boundary Velocity Real -1 Imag 0
Faces Set 10
Return
Set 20 Name " outlet"
Faces 244 246 To 247 252 256 277 280 285 288 304 307 309 315 341 To 342 348 351 1246
Faces 1248 1252 1255 1259 To 1260 1264 1267 1434 To 1435 1439 1441 To 1443 1446 1448
Faces 1450 1452 1456 1459 1461 To 1462 1465 1468 To 1470 1474 1476 To 1478 1482 1671
Faces 1673 1675 To 1676 1680 To 1681 1683 To 1684 1688 To 1689 1691 To 1692
Faces 1696 To 1697 1699 To 1700 1704 To 1705 1707 To 1708 1710 1712 To 1715 1719
Faces 1723 1725 1729 1731 1735 3645 To 3671 3673 To 3683 3685 To 3692 3770
Faces 3852 To 3853
Return
Boundary Impedance Real 416.5 Imag 0
Faces Set 20
Return
Solve
Frequency 10 To 500 LinStep 10
Return
Combine
Read Node 2503 Pressure Return
Amplitude
Read Node 2953 Pressure Return
Amplitude
Divide
Log10
Constant Real 20 Imag 0
Multiply
Write Table 0 Name '2' Return
Return
Curve