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Fluid Flow Table of Contents | Hydraulic and Pneumatic Knowledge
Fluid Power Equipment
Open Calculator to determine the open channel fluid flow - Open channel fluid flow Calculator
| Channel Material |
Constant n |
| clean, uncoated cast iron |
0.013-0.015 |
| clean, coated cast iron |
0.012-0.014 |
| dirty, tuberculed cast iron |
0.015-0.035 |
| riveted steel |
0.015-0.017 |
| lock-bar and welded |
0.012-0.013 |
| galvanized iron |
0.015-0.017 |
| brass and glass |
0.009-0.013 |
| Wood Stove Pipe |
|
small diameter
|
0.011-0.012 |
|
large diameter
|
0.012-0.013 |
| Concrete |
|
with rough joints
|
0.016-0.017 |
|
dry mix, rough forms
|
0.015-0.016 |
|
wet mix, steel forms
|
0.012-0.014 |
|
very smooth, finished
|
0.011-0.012 |
| vitrified sewer |
0.013-0.015 |
| common-clay drainage tile |
0.012-0.014 |
| asbestos |
0.011 |
| planed timber |
0.011 |
| canvas |
0.012 |
| unplaned timber |
0.014 |
| brick |
0.016 |
| rubble masonry |
0.017 |
| smooth earth |
0.018 |
| firm gravel |
0.023 |
| corrugated metal pipe |
0.022 |
| natural channels, good condition |
0.025 |
| natural channels with stones and weeds |
0.035 |
| very poor natural channels |
0.060 |
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