Science – Society – Technology
Mat. | \({r_a}\) | \({\text{SDR}}\) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
6 | 7.4 | 9 | 11 | 13.6 | 17 | 21 | 26 | 33 | 41 | ||
Laminar | |||||||||||
- | - | 0.6321 | 0.6121 | 0.5977 | 0.5862 | 0.5767 | 0.5690 | 0.5632 | 0.5586 | 0.5546 | 0.5517 |
Turbulent | |||||||||||
Plastic | \(r_{min}\) | 0.7111 | 0.6901 | 0.6749 | 0.6627 | 0.6524 | 0.6440 | 0.6378 | 0.6327 | 0.6283 | 0.6252 |
\(r_{m}\) | 0.7110 | 0.6901 | 0.6749 | 0.6626 | 0.6524 | 0.6440 | 0.6377 | 0.6327 | 0.6283 | 0.6251 | |
\(r_{max}\) | 0.7109 | 0.6900 | 0.6748 | 0.6626 | 0.6523 | 0.6439 | 0.6377 | 0.6327 | 0.6283 | 0.6251 | |
Steel | \(r_{min}\) | 0.7134 | 0.6923 | 0.6769 | 0.6645 | 0.6542 | 0.6456 | 0.6393 | 0.6342 | 0.6297 | 0.6265 |
\(r_{m}\) | 0.7149 | 0.6938 | 0.6784 | 0.6659 | 0.6556 | 0.6470 | 0.6407 | 0.6355 | 0.6311 | 0.6278 | |
\(r_{max}\) | 0.7161 | 0.6948 | 0.6794 | 0.6669 | 0.6565 | 0.6479 | 0.6415 | 0.6364 | 0.6319 | 0.6287 | |
Stand. | \(r_{min}\) | 0.6651 | 0.6441 | 0.6289 | 0.6167 | 0.6066 | 0.5983 | 0.5921 | 0.5872 | 0.5828 | 0.5797 |
\(r_{m}\) | 0.6779 | 0.6570 | 0.6419 | 0.6297 | 0.6196 | 0.6113 | 0.6052 | 0.6002 | 0.5959 | 0.5928 | |
\(r_{max}\) | 0.6946 | 0.6739 | 0.6588 | 0.6467 | 0.6366 | 0.6283 | 0.6221 | 0.6172 | 0.6128 | 0.6097 | |
Switch | \(r_{min}\) | 0.7303 | 0.7097 | 0.6946 | 0.6824 | 0.6723 | 0.6639 | 0.6576 | 0.6526 | 0.6481 | 0.6450 |
\(r_{m}\) | 0.7291 | 0.7083 | 0.6931 | 0.6809 | 0.6706 | 0.6622 | 0.6559 | 0.6508 | 0.6464 | 0.6432 | |
\(r_{max}\) | 0.7256 | 0.7045 | 0.6892 | 0.6767 | 0.6664 | 0.6578 | 0.6514 | 0.6463 | 0.6418 | 0.6386 | |
Turbulent rough regime | |||||||||||
Plastic | \(r_{min}\) | 0.7223 | 0.7012 | 0.6858 | 0.6733 | 0.6629 | 0.6543 | 0.6480 | 0.6428 | 0.6383 | 0.6351 |
\(r_{m}\) | 0.7226 | 0.7014 | 0.6860 | 0.6736 | 0.6632 | 0.6546 | 0.6482 | 0.6431 | 0.6386 | 0.6354 | |
\(r_{max}\) | 0.7230 | 0.7019 | 0.6865 | 0.6740 | 0.6636 | 0.6550 | 0.6487 | 0.6435 | 0.6390 | 0.6358 | |
Steel | \(r_{min}\) | 0.7137 | 0.6926 | 0.6773 | 0.6649 | 0.6545 | 0.6460 | 0.6397 | 0.6346 | 0.6301 | 0.6269 |
\(r_{m}\) | 0.7156 | 0.6944 | 0.6791 | 0.6666 | 0.6563 | 0.6477 | 0.6414 | 0.6363 | 0.6318 | 0.6286 | |
\(r_{max}\) | 0.7178 | 0.6967 | 0.6813 | 0.6688 | 0.6585 | 0.6499 | 0.6436 | 0.6384 | 0.6339 | 0.6307 | |
Stand. | \(r_{min}\) | 0.6330 | 0.6100 | 0.5936 | 0.5805 | 0.5696 | 0.5607 | 0.5542 | 0.5489 | 0.5443 | 0.5410 |
\(r_{m}\) | 0.6413 | 0.6184 | 0.6020 | 0.5888 | 0.5780 | 0.5691 | 0.5625 | 0.5572 | 0.5526 | 0.5493 | |
\(r_{max}\) | 0.6529 | 0.6301 | 0.6137 | 0.6005 | 0.5897 | 0.5808 | 0.5742 | 0.5689 | 0.5642 | 0.5609 | |
Switch | \(r_{min}\) | 0.7312 | 0.7106 | 0.6956 | 0.6835 | 0.6734 | 0.6650 | 0.6588 | 0.6538 | 0.6494 | 0.6462 |
\(r_{m}\) | 0.7307 | 0.7100 | 0.6950 | 0.6828 | 0.6727 | 0.6643 | 0.6581 | 0.6530 | 0.6486 | 0.6455 | |
\(r_{max}\) | 0.7300 | 0.7093 | 0.6942 | 0.6820 | 0.6718 | 0.6634 | 0.6571 | 0.6521 | 0.6477 | 0.6445 |