Moe Føre, Endresen and Bjelland (2022), the anchor dataset (ADR 0005): eight Raschel knitted nets towed at 0° and 45°. Loads are asserted tightly here (L1-L3). The same checks through the Net/NetStructure SimObject are on Validation: towed panel through the SimObject (S1).
Generated 2026-10-03 from commit 87e60a3 2026-10-03; tests run 2026-10-03T09:10:34.294 (main entry) and 2026-10-03T09:11:16.576 (VALIDATION entry).
Tests
Status from the gtest XML of the last run. A DISABLED_ test fails against the current laws; its numbers are in the tables below, and it stays disabled until the owner decides the issue.
Conventions: error = model/measured - 1 (in %) for loads and coefficients, model - measured for ratios and localCd; ratio = measured/model; margin = tolerance - |error| (negative = fails).
Setup from mf2022_table2_nets.csv notes: panel area 1.196775 m^2, rho 998.0, nu 1e-06.
Readings: Rn = U t / nu (MF2022 Eq. 4, free-stream U, Table 2 t); Eq. 10 at Rn = 2000 means U = Rn nu / t per net; Sn = Snm. L3 asserts N19a and N36a absolute drag; L4 asserts localCd at the digitised (net, Rn > 1500) points against the text plateau.
L1 LocalThroughFlow, drag coefficients vs Eq. 10 (asserted)
asserted; 16 rows, 0 of 16 outside the tolerance.
Chart: L1 LocalThroughFlow, drag coefficients vs Eq. 10 (asserted); L1 ScreenMF2022, drag coefficients vs Eq. 10 (asserted).
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 CD( 0) U 2.857
0.2174
0.2285
5.111 %
±10.000 %
4.889 %
within
N19a Snm 0.193 CD(45) U 2.857
0.1329
0.1389
4.515 %
±10.000 %
5.485 %
within
N26a Snm 0.262 CD( 0) U 2.857
0.3463
0.3331
-3.809 %
±10.000 %
6.191 %
within
N26a Snm 0.262 CD(45) U 2.857
0.2133
0.2025
-5.057 %
±10.000 %
4.943 %
within
N33a Snm 0.331 CD( 0) U 1.000
0.4921
0.4585
-6.834 %
±10.000 %
3.166 %
within
N33a Snm 0.331 CD(45) U 1.000
0.2937
0.2788
-5.077 %
±10.000 %
4.923 %
within
N36a Snm 0.364 CD( 0) U 1.333
0.5679
0.5286
-6.916 %
±10.000 %
3.084 %
within
N36a Snm 0.364 CD(45) U 1.333
0.3322
0.3214
-3.228 %
±10.000 %
6.772 %
within
N18b Snm 0.185 CD( 0) U 0.800
0.2035
0.2174
6.809 %
±10.000 %
3.191 %
within
N18b Snm 0.185 CD(45) U 0.800
0.1236
0.1322
6.935 %
±10.000 %
3.065 %
within
N20b Snm 0.199 CD( 0) U 0.800
0.2279
0.2369
3.960 %
±10.000 %
6.040 %
within
N20b Snm 0.199 CD(45) U 0.800
0.1399
0.1441
2.965 %
±10.000 %
7.035 %
within
N26b Snm 0.257 CD( 0) U 1.000
0.3363
0.3249
-3.408 %
±10.000 %
6.592 %
within
N26b Snm 0.257 CD(45) U 1.000
0.2075
0.1976
-4.790 %
±10.000 %
5.210 %
within
N33b Snm 0.328 CD( 0) U 1.538
0.4854
0.4525
-6.786 %
±10.000 %
3.214 %
within
N33b Snm 0.328 CD(45) U 1.538
0.2902
0.2752
-5.192 %
±10.000 %
4.808 %
within
L1 LocalThroughFlow, lift coefficient vs Eq. 10 (DISABLED_, fails)
DISABLED test; 8 rows, 3 of 8 outside the tolerance.
Chart: L1 LocalThroughFlow, lift coefficient vs Eq. 10 (DISABLED_, fails); L1 ScreenMF2022, lift coefficient vs Eq. 10 (asserted).
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 CL(45) U 2.857
0.04318
0.04956
14.765 %
±25.000 %
10.235 %
within
N26a Snm 0.262 CL(45) U 2.857
0.08136
0.07264
-10.717 %
±25.000 %
14.283 %
within
N33a Snm 0.331 CL(45) U 1.000
0.1357
0.1007
-25.760 %
±25.000 %
-0.760 %
outside
N36a Snm 0.364 CL(45) U 1.333
0.1673
0.1166
-30.312 %
±25.000 %
-5.312 %
outside
N18b Snm 0.185 CL(45) U 0.800
0.0398
0.04712
18.409 %
±25.000 %
6.591 %
within
N20b Snm 0.199 CL(45) U 0.800
0.04586
0.05141
12.102 %
±25.000 %
12.898 %
within
N26b Snm 0.257 CL(45) U 1.000
0.07805
0.07082
-9.260 %
±25.000 %
15.740 %
within
N33b Snm 0.328 CL(45) U 1.538
0.133
0.09936
-25.273 %
±25.000 %
-0.273 %
outside
L1 ScreenMF2022, drag coefficients vs Eq. 10 (asserted)
asserted; 16 rows, 0 of 16 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 CD( 0) U 2.857
0.2174
0.2174
0.000 %
±10.000 %
10.000 %
within
N19a Snm 0.193 CD(45) U 2.857
0.1329
0.1329
0.000 %
±10.000 %
10.000 %
within
N26a Snm 0.262 CD( 0) U 2.857
0.3463
0.3463
0.000 %
±10.000 %
10.000 %
within
N26a Snm 0.262 CD(45) U 2.857
0.2133
0.2133
0.000 %
±10.000 %
10.000 %
within
N33a Snm 0.331 CD( 0) U 1.000
0.4921
0.4921
0.000 %
±10.000 %
10.000 %
within
N33a Snm 0.331 CD(45) U 1.000
0.2937
0.2937
0.000 %
±10.000 %
10.000 %
within
N36a Snm 0.364 CD( 0) U 1.333
0.5679
0.5679
0.000 %
±10.000 %
10.000 %
within
N36a Snm 0.364 CD(45) U 1.333
0.3322
0.3322
0.000 %
±10.000 %
10.000 %
within
N18b Snm 0.185 CD( 0) U 0.800
0.2035
0.2035
0.000 %
±10.000 %
10.000 %
within
N18b Snm 0.185 CD(45) U 0.800
0.1236
0.1236
0.000 %
±10.000 %
10.000 %
within
N20b Snm 0.199 CD( 0) U 0.800
0.2279
0.2279
0.000 %
±10.000 %
10.000 %
within
N20b Snm 0.199 CD(45) U 0.800
0.1399
0.1399
0.000 %
±10.000 %
10.000 %
within
N26b Snm 0.257 CD( 0) U 1.000
0.3363
0.3363
0.000 %
±10.000 %
10.000 %
within
N26b Snm 0.257 CD(45) U 1.000
0.2075
0.2075
0.000 %
±10.000 %
10.000 %
within
N33b Snm 0.328 CD( 0) U 1.538
0.4854
0.4854
0.000 %
±10.000 %
10.000 %
within
N33b Snm 0.328 CD(45) U 1.538
0.2902
0.2902
0.000 %
±10.000 %
10.000 %
within
L1 ScreenMF2022, lift coefficient vs Eq. 10 (asserted)
asserted; 8 rows, 0 of 8 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 CL(45) U 2.857
0.04318
0.04318
0.000 %
±25.000 %
25.000 %
within
N26a Snm 0.262 CL(45) U 2.857
0.08136
0.08136
0.000 %
±25.000 %
25.000 %
within
N33a Snm 0.331 CL(45) U 1.000
0.1357
0.1357
0.000 %
±25.000 %
25.000 %
within
N36a Snm 0.364 CL(45) U 1.333
0.1673
0.1673
0.000 %
±25.000 %
25.000 %
within
N18b Snm 0.185 CL(45) U 0.800
0.0398
0.0398
0.000 %
±25.000 %
25.000 %
within
N20b Snm 0.199 CL(45) U 0.800
0.04586
0.04586
0.000 %
±25.000 %
25.000 %
within
N26b Snm 0.257 CL(45) U 1.000
0.07805
0.07805
0.000 %
±25.000 %
25.000 %
within
N33b Snm 0.328 CL(45) U 1.538
0.133
0.133
-0.000 %
±25.000 %
25.000 %
within
L2 LocalThroughFlow, text drag (asserted)
asserted; 2 rows, 0 of 2 outside the tolerance.
Chart: L2 LocalThroughFlow, text drag (asserted); L2 ScreenMF2022, text drag (asserted).
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 drag 0 deg 1.75 m/s [N]
416
420.5
1.081 %
±15.000 %
13.919 %
within
N36a Snm 0.364 drag 0 deg 1.75 m/s [N]
934
996.5
6.691 %
±15.000 %
8.309 %
within
L2 LocalThroughFlow, text lift (DISABLED_, fails)
DISABLED test; 2 rows, 1 of 2 outside the tolerance.
Chart: L2 LocalThroughFlow, text lift (DISABLED_, fails); L2 ScreenMF2022, text lift (DISABLED_, fails).
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 lift 45 deg 1.75 m/s [N]
102
91.21
-10.580 %
±15.000 %
4.420 %
within
N33a Snm 0.331 lift 45 deg 1.75 m/s [N]
271
197.2
-27.246 %
±15.000 %
-12.246 %
outside
L2 ScreenMF2022, text drag (asserted)
asserted; 2 rows, 0 of 2 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 drag 0 deg 1.75 m/s [N]
416
397.6
-4.432 %
±15.000 %
10.568 %
within
N36a Snm 0.364 drag 0 deg 1.75 m/s [N]
934
1039
11.194 %
±15.000 %
3.806 %
within
L2 ScreenMF2022, text lift (DISABLED_, fails)
DISABLED test; 2 rows, 1 of 2 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N19a Snm 0.193 lift 45 deg 1.75 m/s [N]
102
78.97
-22.574 %
±15.000 %
-7.574 %
outside
N33a Snm 0.331 lift 45 deg 1.75 m/s [N]
271
248.1
-8.447 %
±15.000 %
6.553 %
within
L3 LocalThroughFlow, Fig. 6/7 drag, all nets (N19a and N36a asserted)
asserted; 39 rows, 1 of 39 outside the tolerance.
Chart: L3 LocalThroughFlow, Fig. 6/7 drag, all nets (N19a and N36a asserted); L3 ScreenMF2022, Fig. 6/7 drag, all nets (reported).
Case
Measured
Model
Error
Tolerance
Margin
Result
N36a Snm 0.364 drag 0 deg 0.50 m/s [N]
97
82.12
-15.345 %
±20.000 %
4.655 %
within
N36a Snm 0.364 drag 0 deg 0.75 m/s [N]
200
175.9
-12.037 %
±20.000 %
7.963 %
within
N36a Snm 0.364 drag 0 deg 1.00 m/s [N]
342
310.6
-9.184 %
±20.000 %
10.816 %
within
N36a Snm 0.364 drag 0 deg 1.25 m/s [N]
523
490.6
-6.198 %
±20.000 %
13.802 %
within
N36a Snm 0.364 drag 0 deg 1.75 m/s [N]
933
996.5
6.805 %
±20.000 %
13.195 %
within
N33a Snm 0.331 drag 0 deg 0.50 m/s [N]
92
68.92
-25.090 %
±20.000 %
-5.090 %
outside
N33a Snm 0.331 drag 0 deg 0.75 m/s [N]
183
151.9
-16.999 %
±20.000 %
3.001 %
within
N33a Snm 0.331 drag 0 deg 1.00 m/s [N]
316
273.8
-13.356 %
±20.000 %
6.644 %
within
N33a Snm 0.331 drag 0 deg 1.35 m/s [N]
579
515.5
-10.962 %
±20.000 %
9.038 %
within
N33a Snm 0.331 drag 0 deg 1.75 m/s [N]
908
896.2
-1.301 %
±20.000 %
18.699 %
within
N26a Snm 0.262 drag 0 deg 0.50 m/s [N]
59
61.59
4.398 %
±20.000 %
15.602 %
within
N26a Snm 0.262 drag 0 deg 0.75 m/s [N]
121
127.9
5.742 %
±20.000 %
14.258 %
within
N26a Snm 0.262 drag 0 deg 1.00 m/s [N]
211
214.7
1.740 %
±20.000 %
18.260 %
within
N26a Snm 0.262 drag 0 deg 1.35 m/s [N]
380
372.1
-2.087 %
±20.000 %
17.913 %
within
N26a Snm 0.262 drag 0 deg 1.75 m/s [N]
609
608.4
-0.102 %
±20.000 %
19.898 %
within
N19a Snm 0.193 drag 0 deg 0.50 m/s [N]
37
42.8
15.675 %
±20.000 %
4.325 %
within
N19a Snm 0.193 drag 0 deg 0.75 m/s [N]
81
89.05
9.933 %
±20.000 %
10.067 %
within
N19a Snm 0.193 drag 0 deg 1.00 m/s [N]
143
149.3
4.405 %
±20.000 %
15.595 %
within
N19a Snm 0.193 drag 0 deg 1.25 m/s [N]
218
224
2.742 %
±20.000 %
17.258 %
within
N19a Snm 0.193 drag 0 deg 1.75 m/s [N]
415
420.5
1.324 %
±20.000 %
18.676 %
within
N36a Snm 0.364 drag 45 deg 0.50 m/s [N]
48
49.94
4.031 %
±20.000 %
15.969 %
within
N36a Snm 0.364 drag 45 deg 0.75 m/s [N]
111
107
-3.619 %
±20.000 %
16.381 %
within
N36a Snm 0.364 drag 45 deg 1.00 m/s [N]
200
188.9
-5.563 %
±20.000 %
14.437 %
within
N36a Snm 0.364 drag 45 deg 1.25 m/s [N]
308
298.3
-3.140 %
±20.000 %
16.860 %
within
N36a Snm 0.364 drag 45 deg 1.75 m/s [N]
578
606
4.840 %
±20.000 %
15.160 %
within
N33a Snm 0.331 drag 45 deg 0.75 m/s [N]
103
92.37
-10.324 %
±20.000 %
9.676 %
within
N33a Snm 0.331 drag 45 deg 1.00 m/s [N]
175
166.5
-4.858 %
±20.000 %
15.142 %
within
N33a Snm 0.331 drag 45 deg 1.35 m/s [N]
326
313.5
-3.834 %
±20.000 %
16.166 %
within
N33a Snm 0.331 drag 45 deg 1.75 m/s [N]
527
545
3.412 %
±20.000 %
16.588 %
within
N26a Snm 0.262 drag 45 deg 0.50 m/s [N]
32
37.46
17.052 %
±20.000 %
2.948 %
within
N26a Snm 0.262 drag 45 deg 0.75 m/s [N]
70
77.81
11.153 %
±20.000 %
8.847 %
within
N26a Snm 0.262 drag 45 deg 1.00 m/s [N]
127
130.5
2.791 %
±20.000 %
17.209 %
within
N26a Snm 0.262 drag 45 deg 1.35 m/s [N]
233
226.3
-2.892 %
±20.000 %
17.108 %
within
N26a Snm 0.262 drag 45 deg 1.75 m/s [N]
370
370
-0.010 %
±20.000 %
19.990 %
within
N19a Snm 0.193 drag 45 deg 0.50 m/s [N]
22
26.03
18.304 %
±20.000 %
1.696 %
within
N19a Snm 0.193 drag 45 deg 0.75 m/s [N]
50
54.15
8.299 %
±20.000 %
11.701 %
within
N19a Snm 0.193 drag 45 deg 1.00 m/s [N]
87
90.79
4.357 %
±20.000 %
15.643 %
within
N19a Snm 0.193 drag 45 deg 1.25 m/s [N]
137
136.2
-0.582 %
±20.000 %
19.418 %
within
N19a Snm 0.193 drag 45 deg 1.75 m/s [N]
252
255.7
1.472 %
±20.000 %
18.528 %
within
L3 ScreenMF2022, Fig. 6/7 drag, all nets (reported)
reported; 39 rows, 1 of 39 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N36a Snm 0.364 drag 0 deg 0.50 m/s [N]
97
84.78
-12.598 %
±20.000 %
7.402 %
within
N36a Snm 0.364 drag 0 deg 0.75 m/s [N]
200
190.8
-4.623 %
±20.000 %
15.377 %
within
N36a Snm 0.364 drag 0 deg 1.00 m/s [N]
342
339.1
-0.843 %
±20.000 %
19.157 %
within
N36a Snm 0.364 drag 0 deg 1.25 m/s [N]
523
529.9
1.314 %
±20.000 %
18.686 %
within
N36a Snm 0.364 drag 0 deg 1.75 m/s [N]
933
1039
11.313 %
±20.000 %
8.687 %
within
N33a Snm 0.331 drag 0 deg 0.50 m/s [N]
92
73.47
-20.141 %
±20.000 %
-0.141 %
outside
N33a Snm 0.331 drag 0 deg 0.75 m/s [N]
183
165.3
-9.668 %
±20.000 %
10.332 %
within
N33a Snm 0.331 drag 0 deg 1.00 m/s [N]
316
293.9
-7.000 %
±20.000 %
13.000 %
within
N33a Snm 0.331 drag 0 deg 1.35 m/s [N]
579
535.6
-7.496 %
±20.000 %
12.504 %
within
N33a Snm 0.331 drag 0 deg 1.75 m/s [N]
908
900
-0.880 %
±20.000 %
19.120 %
within
N26a Snm 0.262 drag 0 deg 0.50 m/s [N]
59
51.7
-12.381 %
±20.000 %
7.619 %
within
N26a Snm 0.262 drag 0 deg 0.75 m/s [N]
121
116.3
-3.872 %
±20.000 %
16.128 %
within
N26a Snm 0.262 drag 0 deg 1.00 m/s [N]
211
206.8
-1.999 %
±20.000 %
18.001 %
within
N26a Snm 0.262 drag 0 deg 1.35 m/s [N]
380
376.9
-0.826 %
±20.000 %
19.174 %
within
N26a Snm 0.262 drag 0 deg 1.75 m/s [N]
609
633.3
3.985 %
±20.000 %
16.015 %
within
N19a Snm 0.193 drag 0 deg 0.50 m/s [N]
37
32.45
-12.286 %
±20.000 %
7.714 %
within
N19a Snm 0.193 drag 0 deg 0.75 m/s [N]
81
73.02
-9.850 %
±20.000 %
10.150 %
within
N19a Snm 0.193 drag 0 deg 1.00 m/s [N]
143
129.8
-9.219 %
±20.000 %
10.781 %
within
N19a Snm 0.193 drag 0 deg 1.25 m/s [N]
218
202.8
-6.955 %
±20.000 %
13.045 %
within
N19a Snm 0.193 drag 0 deg 1.75 m/s [N]
415
397.6
-4.202 %
±20.000 %
15.798 %
within
N36a Snm 0.364 drag 45 deg 0.50 m/s [N]
48
49.59
3.314 %
±20.000 %
16.686 %
within
N36a Snm 0.364 drag 45 deg 0.75 m/s [N]
111
111.6
0.522 %
±20.000 %
19.478 %
within
N36a Snm 0.364 drag 45 deg 1.00 m/s [N]
200
198.4
-0.819 %
±20.000 %
19.181 %
within
N36a Snm 0.364 drag 45 deg 1.25 m/s [N]
308
309.9
0.631 %
±20.000 %
19.369 %
within
N36a Snm 0.364 drag 45 deg 1.75 m/s [N]
578
607.5
5.101 %
±20.000 %
14.899 %
within
N33a Snm 0.331 drag 45 deg 0.75 m/s [N]
103
98.66
-4.209 %
±20.000 %
15.791 %
within
N33a Snm 0.331 drag 45 deg 1.00 m/s [N]
175
175.4
0.231 %
±20.000 %
19.769 %
within
N33a Snm 0.331 drag 45 deg 1.35 m/s [N]
326
319.7
-1.941 %
±20.000 %
18.059 %
within
N33a Snm 0.331 drag 45 deg 1.75 m/s [N]
527
537.2
1.931 %
±20.000 %
18.069 %
within
N26a Snm 0.262 drag 45 deg 0.50 m/s [N]
32
31.85
-0.470 %
±20.000 %
19.530 %
within
N26a Snm 0.262 drag 45 deg 0.75 m/s [N]
70
71.66
2.374 %
±20.000 %
17.626 %
within
N26a Snm 0.262 drag 45 deg 1.00 m/s [N]
127
127.4
0.314 %
±20.000 %
19.686 %
within
N26a Snm 0.262 drag 45 deg 1.35 m/s [N]
233
232.2
-0.350 %
±20.000 %
19.650 %
within
N26a Snm 0.262 drag 45 deg 1.75 m/s [N]
370
390.2
5.448 %
±20.000 %
14.552 %
within
N19a Snm 0.193 drag 45 deg 0.50 m/s [N]
22
19.85
-9.780 %
±20.000 %
10.220 %
within
N19a Snm 0.193 drag 45 deg 0.75 m/s [N]
50
44.66
-10.682 %
±20.000 %
9.318 %
within
N19a Snm 0.193 drag 45 deg 1.00 m/s [N]
87
79.39
-8.743 %
±20.000 %
11.257 %
within
N19a Snm 0.193 drag 45 deg 1.25 m/s [N]
137
124.1
-9.451 %
±20.000 %
10.549 %
within
N19a Snm 0.193 drag 45 deg 1.75 m/s [N]
252
243.1
-3.515 %
±20.000 %
16.485 %
within
L4 LocalThroughFlow localCd vs the text plateau 0.80 at 0 deg (DISABLED_, fails)
DISABLED test; 16 rows, 3 of 16 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N33a Snm 0.331 localCd 0 deg Rn 2010
0.8
0.8018
0.002
±0.12
0.118
within
N33a Snm 0.331 localCd 0 deg Rn 2700
0.8
0.8281
0.028
±0.12
0.092
within
N33a Snm 0.331 localCd 0 deg Rn 3510
0.8
0.857
0.057
±0.12
0.063
within
N36a Snm 0.364 localCd 0 deg Rn 2620
0.8
0.8119
0.012
±0.12
0.108
within
N33b Snm 0.328 localCd 0 deg Rn 1630
0.8
0.7932
-0.007
±0.12
0.113
within
N33b Snm 0.328 localCd 0 deg Rn 2270
0.8
0.8125
0.012
±0.12
0.108
within
N26b Snm 0.257 localCd 0 deg Rn 3000
0.8
0.8693
0.069
±0.12
0.051
within
N26b Snm 0.257 localCd 0 deg Rn 3510
0.8
0.8874
0.087
±0.12
0.033
within
N26b Snm 0.257 localCd 0 deg Rn 4000
0.8
0.9024
0.102
±0.12
0.018
within
N20b Snm 0.199 localCd 0 deg Rn 2510
0.8
0.8746
0.075
±0.12
0.045
within
N20b Snm 0.199 localCd 0 deg Rn 3130
0.8
0.8979
0.098
±0.12
0.022
within
N20b Snm 0.199 localCd 0 deg Rn 3750
0.8
0.9195
0.119
±0.12
0.001
within
N20b Snm 0.199 localCd 0 deg Rn 5000
0.8
0.9518
0.152
±0.12
-0.032
outside
N18b Snm 0.185 localCd 0 deg Rn 3130
0.8
0.9037
0.104
±0.12
0.016
within
N18b Snm 0.185 localCd 0 deg Rn 3750
0.8
0.9254
0.125
±0.12
-0.005
outside
N18b Snm 0.185 localCd 0 deg Rn 5000
0.8
0.9582
0.158
±0.12
-0.038
outside
L4 LocalThroughFlow localCd vs the text plateau 0.50 at 45 deg (asserted)
asserted; 16 rows, 0 of 16 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N33a Snm 0.331 localCd 45 deg Rn 2000
0.5
0.4874
-0.013
±0.12
0.107
within
N33a Snm 0.331 localCd 45 deg Rn 2700
0.5
0.5036
0.004
±0.12
0.116
within
N33a Snm 0.331 localCd 45 deg Rn 3510
0.5
0.5211
0.021
±0.12
0.099
within
N36a Snm 0.364 localCd 45 deg Rn 1880
0.5
0.4766
-0.023
±0.12
0.097
within
N36a Snm 0.364 localCd 45 deg Rn 2620
0.5
0.4937
-0.006
±0.12
0.114
within
N33b Snm 0.328 localCd 45 deg Rn 1630
0.5
0.4824
-0.018
±0.12
0.102
within
N33b Snm 0.328 localCd 45 deg Rn 2280
0.5
0.4943
-0.006
±0.12
0.114
within
N26b Snm 0.257 localCd 45 deg Rn 3000
0.5
0.5286
0.029
±0.12
0.091
within
N26b Snm 0.257 localCd 45 deg Rn 4000
0.5
0.5488
0.049
±0.12
0.071
within
N20b Snm 0.199 localCd 45 deg Rn 2500
0.5
0.5316
0.032
±0.12
0.088
within
N20b Snm 0.199 localCd 45 deg Rn 3130
0.5
0.546
0.046
±0.12
0.074
within
N20b Snm 0.199 localCd 45 deg Rn 3750
0.5
0.5592
0.059
±0.12
0.061
within
N20b Snm 0.199 localCd 45 deg Rn 5000
0.5
0.5788
0.079
±0.12
0.041
within
N18b Snm 0.185 localCd 45 deg Rn 3130
0.5
0.5496
0.05
±0.12
0.07
within
N18b Snm 0.185 localCd 45 deg Rn 3750
0.5
0.5628
0.063
±0.12
0.057
within
N18b Snm 0.185 localCd 45 deg Rn 5000
0.5
0.5827
0.083
±0.12
0.037
within
L4 LocalThroughFlow localCd vs each digitised point, 0 deg (reported)
reported; 16 rows, 4 of 16 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N33a Snm 0.331 localCd 0 deg Rn 2010
0.924
0.8018
-0.122
±0.12
-0.002
outside
N33a Snm 0.331 localCd 0 deg Rn 2700
0.926
0.8281
-0.098
±0.12
0.022
within
N33a Snm 0.331 localCd 0 deg Rn 3510
0.865
0.857
-0.008
±0.12
0.112
within
N36a Snm 0.364 localCd 0 deg Rn 2620
0.758
0.8119
0.054
±0.12
0.066
within
N33b Snm 0.328 localCd 0 deg Rn 1630
0.837
0.7932
-0.044
±0.12
0.076
within
N33b Snm 0.328 localCd 0 deg Rn 2270
0.808
0.8125
0.004
±0.12
0.116
within
N26b Snm 0.257 localCd 0 deg Rn 3000
0.819
0.8693
0.05
±0.12
0.07
within
N26b Snm 0.257 localCd 0 deg Rn 3510
0.812
0.8874
0.075
±0.12
0.045
within
N26b Snm 0.257 localCd 0 deg Rn 4000
0.794
0.9024
0.108
±0.12
0.012
within
N20b Snm 0.199 localCd 0 deg Rn 2510
0.801
0.8746
0.074
±0.12
0.046
within
N20b Snm 0.199 localCd 0 deg Rn 3130
0.786
0.8979
0.112
±0.12
0.008
within
N20b Snm 0.199 localCd 0 deg Rn 3750
0.786
0.9195
0.133
±0.12
-0.013
outside
N20b Snm 0.199 localCd 0 deg Rn 5000
0.751
0.9518
0.201
±0.12
-0.081
outside
N18b Snm 0.185 localCd 0 deg Rn 3130
0.855
0.9037
0.049
±0.12
0.071
within
N18b Snm 0.185 localCd 0 deg Rn 3750
0.843
0.9254
0.082
±0.12
0.038
within
N18b Snm 0.185 localCd 0 deg Rn 5000
0.83
0.9582
0.128
±0.12
-0.008
outside
L4 LocalThroughFlow localCd vs each digitised point, 45 deg (reported)
reported; 16 rows, 0 of 16 outside the tolerance.
Case
Measured
Model
Error
Tolerance
Margin
Result
N33a Snm 0.331 localCd 45 deg Rn 2000
0.513
0.4874
-0.026
±0.12
0.094
within
N33a Snm 0.331 localCd 45 deg Rn 2700
0.519
0.5036
-0.015
±0.12
0.105
within
N33a Snm 0.331 localCd 45 deg Rn 3510
0.501
0.5211
0.02
±0.12
0.1
within
N36a Snm 0.364 localCd 45 deg Rn 1880
0.494
0.4766
-0.017
±0.12
0.103
within
N36a Snm 0.364 localCd 45 deg Rn 2620
0.471
0.4937
0.023
±0.12
0.097
within
N33b Snm 0.328 localCd 45 deg Rn 1630
0.526
0.4824
-0.044
±0.12
0.076
within
N33b Snm 0.328 localCd 45 deg Rn 2280
0.512
0.4943
-0.018
±0.12
0.102
within
N26b Snm 0.257 localCd 45 deg Rn 3000
0.536
0.5286
-0.007
±0.12
0.113
within
N26b Snm 0.257 localCd 45 deg Rn 4000
0.536
0.5488
0.013
±0.12
0.107
within
N20b Snm 0.199 localCd 45 deg Rn 2500
0.493
0.5316
0.039
±0.12
0.081
within
N20b Snm 0.199 localCd 45 deg Rn 3130
0.49
0.546
0.056
±0.12
0.064
within
N20b Snm 0.199 localCd 45 deg Rn 3750
0.494
0.5592
0.065
±0.12
0.055
within
N20b Snm 0.199 localCd 45 deg Rn 5000
0.487
0.5788
0.092
±0.12
0.028
within
N18b Snm 0.185 localCd 45 deg Rn 3130
0.522
0.5496
0.028
±0.12
0.092
within
N18b Snm 0.185 localCd 45 deg Rn 3750
0.526
0.5628
0.037
±0.12
0.083
within
N18b Snm 0.185 localCd 45 deg Rn 5000
0.521
0.5827
0.062
±0.12
0.058
within
Data provenance
Every measured number in the tables above comes from these files (contract C6); the header of each gives the paper, the table or figure, how it was obtained and its uncertainty.
mf2022_table2_nets.csv
tests/data/mf2022_table2_nets.csv, 8 rows.
Field
Value
source
Moe Foere H, Endresen PC, Bjelland HV (2022), Load coefficients and dimensions of Raschel knitted netting materials in fish farms, J. Offshore Mech. Arct. Eng. 144(4) 041301 (MF2022)
location
Table 2 (t, Snm, K; PDF p. 3) and Table 1 (s, Sne; PDF p. 2)
kind
tabulated
uncertainty
as published (values copied exactly); MF2022 give no error bars for Table 1 or Table 2
Rows in table order N19a, N26a, N33a, N36a, N18b, N20b, N26b, N33b; each net is identified by its Snm elsewhere in the MF2022 files.
notes
t_mm is the Table 2 (image analysis) twine thickness; Table 1 (hand measured) gives the same t except N20b, 2.2 mm in Table 1 and 2.5 mm in Table 2.
notes
s_mm and sne are Table 1 (mesh side by frame dimension / mesh count; Sne = 2t/s with the Table 1 t). The a nets were towed in 2020, the b nets in 2019.
notes
Text-stated setup (PDF p. 3-4): panel = inner frame B x H = 1.215 x 0.985 m; rho = 998 kg/m3; nu = 1e-6 m2/s; Rn = U t / nu (Eq. 4); frame loads subtracted.
coefficients copied exactly; the fits are trend lines through the Fig. 9-11 and Fig. 13 data and carry the scatter of those figures (MF2022 note that lift is net-dependent)
quantity_id 1 = drag (towing direction), 2 = lift (perpendicular). The text gives "maximum values of 416-934 N [drag] and 102-271 N [lift] for a towing velocity of 1.75 m/s" for the 2020 nets (N19a, N26a, N33a, N36a); drag is at 0 deg (Fig. 6), lift at 45 deg (Fig. 8).
notes
The text does not name the nets. Drag 416 N = N19a and 934 N = N36a (Fig. 6). Lift 102 N = N19a (Fig. 8). Lift 271 N is N33a in Fig. 8: at 1.75 m/s its triangle (approx. 274 N) lies above the N36a square (approx. 264 N, digitised by A1). The plan's attribution of 271 N to N36a is not supported by Fig. 8.
notes
Also text-stated (not rows): doubling U from 0.5 to 1 m/s raises the drag by a factor 3.6-3.8; frame drag at 1.75 m/s 162-185 N (0 deg) and 112-133 N (45 deg); clean frame 114 N and 97 N.
Fig. 6 (drag, theta = 0, PDF p. 5) and Fig. 7 (drag, theta = 45 deg, PDF p. 5)
kind
digitised
uncertainty
+-6 N for markers that are fully visible; +-10 N for markers partly hidden under another marker (N36a, N33a, N26a at 0.5 and 0.75 m/s); u_m_s +-0.005 m/s
units
snm [-], theta_deg [deg], u_m_s [m/s], drag_N [N]
notes
Digitised by WP-A1 from the embedded raster figures (843 px wide, 266 ppi): axes calibrated by least squares on the grid lines (Fig. 6: 0.505 px/N, Fig. 7: 0.511 px/N); marker centres from the marker blobs, or from a visible marker edge plus half the marker size where markers overlap. Not eye-read.
notes
Nets by Snm: 0.193 N19a, 0.262 N26a, 0.331 N33a, 0.364 N36a (Table 2). N33a and N26a were towed at 1.35 m/s where N36a and N19a were towed at 1.25 m/s. Speeds 0.1, 0.15 and 0.25 m/s are omitted: the markers overlap near zero load (below about 25 N), under the digitising resolution.
notes
Fig. 7 N33a at 0.5 m/s is omitted: its marker is hidden. Check against the text: N19a 0 deg at 1.75 m/s = 415 N (text 416 N), N36a = 933 N (text 934 N). Drag ratio F(1.0)/F(0.5) at 0 deg from these rows is 3.46-3.83 (text: 3.6-3.8), within the stated uncertainty.
Fig. 14 (theta = 0, PDF p. 7) and Fig. 15 (theta = 45 deg, PDF p. 7); plateau values text-stated on PDF p. 7
kind
digitised
uncertainty
cd_local +-0.015, rn +-30 (marker centres from the embedded raster figures, 1 px = 0.0024 in Cd and 7.2 in Rn)
units
snm [-], theta_deg [deg], rn [-], cd_local [-]
notes
cd_local is MF2022 Eq. 9, C_d = F_D / (0.5 rho A U^2) * 4 (1 - Snm)^2 / (Snm (1 + r)^2), with r from Eq. 11; Rn = U t / nu with the undisturbed U (Eq. 4).
notes
Only points with Rn >= 1000 whose marker is fully or almost fully visible are included: the Rn < 1000 region and the clusters near Rn 1880-2000 and 2500 (several nets overlap) are omitted. N19a and N26a (t = 0.7 mm) have no Rn >= 1000 point that is clear of other markers.
notes
Text-stated (PDF p. 7), not rows: "the drag coefficient appears close to constant for Rn \> 1500, with an average value of approximately 0.8" (theta = 0, N33a higher than the others); for theta = 45 deg "for Rn \> 1000, the drag coefficients for all inclined nets are close to constant with an approximate value of 0.5".
notes
Nets by Snm: 0.364 N36a, 0.331 N33a, 0.328 N33b, 0.257 N26b, 0.199 N20b, 0.185 N18b (Table 2). Digitised by WP-A1 (axes calibrated on the grid lines; marker class from fill, shape and grey level).