Simulation results for the case of a stub diameter of D3 = 15 mm for various stub lengths (L3) and a valve closure time of tc = 0.003 s
f . | Without stub HWS-Bmax (m) . | With stub . | ErrC-B(ws) (%) . | |||
---|---|---|---|---|---|---|
L3 (m) . | HCmax (m) . | tCmax (s) . | Formula for tCmax . | |||
Col. (1) . | Col. (2) . | Col. (3) . | Col. (4) . | Col. (5) . | Col. (6) . | Col. (7) . |
Frictionless f1 = f2 = f3 = 0 | 212.03 | 0.02 | 225.64 | 0.01302 | tc + L2/a2 + L3/a3 | 6.42 |
0.05 | 245.73 | 0.01305 | tc + L2/a2 + L3/a3 | 15.89 | ||
0.10 | 278.14 | 0.01310 | tc + L2/a2 + L3/a3 | 31.18 | ||
0.20 | 330.01 | 0.01320 | tc + L2/a2 + L3/a3 | 55.64 | ||
0.30 | 362.21 | 0.01330 | tc + L2/a2 + L3/a3 | 70.83 | ||
0.40 | 379.93 | 0.01340 | tc + L2/a2 + L3/a3 | 79.19 | ||
0.50 | 391.51 | 0.01350 | tc + L2/a2 + L3/a3 | 84.65 | ||
0.60 | 397.47 | 0.01360 | tc + L2/a2 + L3/a3 | 87.46 | ||
0.70 | 401.41 | 0.01370 | tc + L2/a2 + L3/a3 | 89.32 | ||
0.80 | 404.60 | 0.01380 | tc + L2/a2 + L3/a3 | 90.82 | ||
0.90 | 407.28 | 0.01390 | tc + L2/a2 + L3/a3 | 92.09 | ||
1.00 | 409.23 | 0.01400 | tc + L2/a2 + L3/a3 | 93.01 | ||
With friction f1 = 0.018 f2 = 0.018 f3 = 0.073 | 196.03 | 0.02 | 208.81 | 0.01302 | tc + L2/a2 + L3/a3 | 6.52 |
0.05 | 228.07 | 0.01305 | tc + L2/a2 + L3/a3 | 16.34 | ||
0.10 | 258.97 | 0.01310 | tc + L2/a2 + L3/a3 | 32.11 | ||
0.20 | 307.44 | 0.01320 | tc + L2/a2 + L3/a3 | 56.83 | ||
0.30 | 336.52 | 0.01330 | tc + L2/a2 + L3/a3 | 71.67 | ||
0.40 | 352.16 | 0.01340 | tc + L2/a2 + L3/a3 | 79.65 | ||
0.50 | 362.18 | 0.01350 | tc + L2/a2 + L3/a3 | 84.76 | ||
0.60 | 367.28 | 0.01360 | tc + L2/a2 + L3/a3 | 87.36 | ||
0.70 | 370.60 | 0.01370 | tc + L2/a2 + L3/a3 | 89.05 | ||
0.80 | 373.26 | 0.01380 | tc + L2/a2 + L3/a3 | 90.41 | ||
0.90 | 375.45 | 0.01390 | tc + L2/a2 + L3/a3 | 91.53 | ||
1.00 | 377.04 | 0.01400 | tc + L2/a2 + L3/a3 | 92.34 |
f . | Without stub HWS-Bmax (m) . | With stub . | ErrC-B(ws) (%) . | |||
---|---|---|---|---|---|---|
L3 (m) . | HCmax (m) . | tCmax (s) . | Formula for tCmax . | |||
Col. (1) . | Col. (2) . | Col. (3) . | Col. (4) . | Col. (5) . | Col. (6) . | Col. (7) . |
Frictionless f1 = f2 = f3 = 0 | 212.03 | 0.02 | 225.64 | 0.01302 | tc + L2/a2 + L3/a3 | 6.42 |
0.05 | 245.73 | 0.01305 | tc + L2/a2 + L3/a3 | 15.89 | ||
0.10 | 278.14 | 0.01310 | tc + L2/a2 + L3/a3 | 31.18 | ||
0.20 | 330.01 | 0.01320 | tc + L2/a2 + L3/a3 | 55.64 | ||
0.30 | 362.21 | 0.01330 | tc + L2/a2 + L3/a3 | 70.83 | ||
0.40 | 379.93 | 0.01340 | tc + L2/a2 + L3/a3 | 79.19 | ||
0.50 | 391.51 | 0.01350 | tc + L2/a2 + L3/a3 | 84.65 | ||
0.60 | 397.47 | 0.01360 | tc + L2/a2 + L3/a3 | 87.46 | ||
0.70 | 401.41 | 0.01370 | tc + L2/a2 + L3/a3 | 89.32 | ||
0.80 | 404.60 | 0.01380 | tc + L2/a2 + L3/a3 | 90.82 | ||
0.90 | 407.28 | 0.01390 | tc + L2/a2 + L3/a3 | 92.09 | ||
1.00 | 409.23 | 0.01400 | tc + L2/a2 + L3/a3 | 93.01 | ||
With friction f1 = 0.018 f2 = 0.018 f3 = 0.073 | 196.03 | 0.02 | 208.81 | 0.01302 | tc + L2/a2 + L3/a3 | 6.52 |
0.05 | 228.07 | 0.01305 | tc + L2/a2 + L3/a3 | 16.34 | ||
0.10 | 258.97 | 0.01310 | tc + L2/a2 + L3/a3 | 32.11 | ||
0.20 | 307.44 | 0.01320 | tc + L2/a2 + L3/a3 | 56.83 | ||
0.30 | 336.52 | 0.01330 | tc + L2/a2 + L3/a3 | 71.67 | ||
0.40 | 352.16 | 0.01340 | tc + L2/a2 + L3/a3 | 79.65 | ||
0.50 | 362.18 | 0.01350 | tc + L2/a2 + L3/a3 | 84.76 | ||
0.60 | 367.28 | 0.01360 | tc + L2/a2 + L3/a3 | 87.36 | ||
0.70 | 370.60 | 0.01370 | tc + L2/a2 + L3/a3 | 89.05 | ||
0.80 | 373.26 | 0.01380 | tc + L2/a2 + L3/a3 | 90.41 | ||
0.90 | 375.45 | 0.01390 | tc + L2/a2 + L3/a3 | 91.53 | ||
1.00 | 377.04 | 0.01400 | tc + L2/a2 + L3/a3 | 92.34 |