EXTRAN III Workbench

EXTRAN III Workbench

Extended Transport, CDM 1981 · the printed listing, running again
v1.1.0
The manual's example problems

Pick a deck

Each is the deck printed in the 1981 manual. Picking one runs it.

Engine

EXTRAN III · 189 KB WebAssembly

The listing as printed; it reproduces CDM's 1981 runs.

manual deck
Deck
Example 1 (manual p. 32)
Time steps
1,440 × 20 s = 8.00 h
Print cycles
32
Report
21 pages
Run time
21 ms
Exit
normal
Engine
EXTRAN III as printed (1981)

**** WARNING **** (C*DELT/LEN) IN CONDUIT 1630 IS 1.1 AT FULL DEPTH.

Continuity error
-1.00 %
inflow 1,458,000 ft³ · left 7,902 ft³ within 1 %
Surcharged junctions
3 of 10
longest 82309, 165.3 min
HGL reached ground
2 junctions
80408, 80608
Peak outfall flow
120.6 cfs
conduit 1030 at 2 h 36 min
Hydraulic grade line

Profile along a flow path

8010012014016002,0004,0006,0008,00010,00012,00014,000Distance along path (ft)Elevation (ft)80408060160216001630103080408: HGL 137.35 ft, depth 12.75 ft, above crown 128.60 (surcharge iteration)8040880608: HGL 135.00 ft, depth 16.70 ft, above crown 122.30 (surcharge iteration)8060882309: HGL 133.75 ft, depth 21.45 ft, above crown 118.50 (surcharge iteration)8230916109: HGL 106.19 ft, depth 3.39 ft1610916009: HGL 105.87 ft, depth 3.87 ft1600910309: HGL 105.82 ft, depth 4.22 ft1030910208: HGL 90.43 ft, depth 0.53 ft10208
2 h 15 min · cycle 405
HGL nowhighest HGL in the rungroundinvert and crown (dotted: channel bank)3 junctions above crown now
Every print cycle

Junction depth

0510152025012345678Time (h)Depth above invert (ft)
From the report

Junction summary

JunctionGround ftCrown ftMax depth ftAtSurcharge ftBelow ground ftSurcharged min
80408138.00128.6013.400:329.400.00153.0
80608135.00122.3016.700:3012.700.00159.3
81009137.00132.703.360:270.005.440.0
81309130.00122.003.560:510.008.940.0
82309155.00118.5021.680:3315.4821.02165.3
10208100.0098.900.532:360.009.570.0
10309111.00110.604.223:010.005.180.0
15009125.00117.002.511:220.0010.990.0
16009120.00111.003.873:000.0014.130.0
16109125.00108.803.393:000.0018.810.0

Conduit summary

ConduitDesign Q cfsDesign V fpsDepth inMax Q cfsAtMax V fpsAtMax / designDepth up ftDepth down ft
804073.65.948.050.80:196.40:180.713.4016.70
806053.34.248.047.50:255.00:240.916.7019.48
810078.14.954.061.00:375.50:340.83.363.56
813070.64.454.054.91:045.10:570.83.562.51
10303,028.312.5108.0120.62:365.52:370.04.220.53
1570123.65.266.052.71:223.91:100.42.513.87
1600146.85.272.073.70:406.10:380.53.393.87
16302,313.29.5108.0120.71:585.00:440.13.874.22
160243.42.260.070.62:334.00:281.621.683.39
NanoGPT