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Viscous Losses In Pipes Essay

1489 words - 6 pages

Fluids Lab
Viscous Losses in Pipes

Objectives:
Compare the flow rate/pressure drop characteristics for flow in pipes in the laminar and turbulent regions.
Apparatus:
The experiment is conducted with the help of a Manometer, with which the pressure drop between two gauge points can be measured. For small pressure differences the water (oil) / air manometer is used, whereas for larger pressure differences the mercury / water (oil) manometer is used. The flow rate of the water is measured in volume per time; the flow rate of the oil is measured with a rota meter.

Operating Procedure
Before start:
Close the valve in the downstream limb of the water/air (oil/air) manometer
Switch on ...view middle of the document...

66E-01 | 3.063551015 | -0.247272186 |
56.7 | 1746.18 | 5.29E-06 | 7.48E-01 | 3.24208901 | -0.125876506 |
47.7 | 2727.18 | 6.29E-06 | 8.90E-01 | 3.435713803 | -0.050681532 |
46.8 | 2992.05 | 6.41E-06 | 9.07E-01 | 3.475968847 | -0.042474148 |
  |   |   |   |   |   |
47.8 | 5336.64 | 8.37E-06 | 1.18E+00 | 3.727267907 | 0.07339328 |
40 | 8405.208 | 1.00E-05 | 1.41E+00 | 3.924548465 | 0.150667822 |
37.5 | 13341.6 | 1.30E-05 | 1.84E+00 | 4.125207916 | 0.264611175 |
33.6 | 18678.24 | 1.79E-05 | 2.53E+00 | 4.271335951 | 0.403520853 |
30 | 26416.368 | 2.00E-05 | 2.83E+00 | 4.421873106 | 0.451697818 |

Water - Derived analysis
V (m/s) | Re | f (V) | dP (Pa) | log (V) | Log (dP) |
8.47E-02 | 348.4 | 0.183713499 | 1.15E+02 | -1.07211659 | 2.061087925 |
2.57E-01 | 1057 | 0.060546822 | 3.49E+02 | -0.590066877 | 2.543137638 |
2.99E-01 | 1230 | 0.052041918 | 4.06E+02 | -0.524328812 | 2.608875703 |
4.61E-01 | 1896 | 0.033753868 | 6.26E+02 | -0.336299075 | 2.79690544 |
5.66E-01 | 2328 | 0.04549295 | 1.27E+03 | -0.247183569 | 3.104757 |
7.48E-01 | 3077 | 0.042429978 | 2.07E+03 | -0.126098402 | 3.316656042 |
8.90E-01 | 3661 | 0.040625686 | 2.81E+03 | -0.050609993 | 3.448760757 |
9.07E-01 | 3730 | 0.04043397 | 2.90E+03 | -0.042392713 | 3.463140998 |
1.18E+00 | 4853 | 0.037859747 | 4.60E+03 | 0.071882007 | 3.663121758 |
1.41E+00 | 5799 | 0.036211243 | 6.29E+03 | 0.149219113 | 3.798461692 |
1.84E+00 | 7568 | 0.033880027 | 1.00E+04 | 0.264817823 | 4.000759436 |
2.53E+00 | 10406 | 0.031287299 | 1.75E+04 | 0.403120521 | 4.242789157 |
2.83E+00 | 11640 | 0.030422969 | 2.13E+04 | 0.451786436 | 4.327954507 |

Oil – observed
∆h (m) | ∆P observed (N/m²) | float | T (deg C) | Q (m³/s) | V (m/s) | log(∆P) | log(V) |
0.038 | 325.92 | 5 | 25 | 8.33E-08 | 0.011 | 2.51E+00 | -1.96E+00 |
0.084 | 716.85 | 6 | 22 | 1.33E-07 | 0.017 | 2.86E+00 | -1.76E+00 |
0.089 | 760.48 | 7 | 25 | 2.00E-07 | 0.026 | 2.88E+00 | -1.58E+00 |
0.163 | 1394.35 | 8 | 22 | 2.33E-07 | 0.03 | 3.14E+00 | -1.52E+00 |
0.17 | 1454.23 | 9 | 25 | 3.00E-07 | 0.039 | 3.16E+00 | -1.41E+00 |
0.3 | 2566.3 | 10 | 22 | 4.17E-07 | 0.054 | 3.41E+00 | -1.27E+00 |
0.398 | 3404.62 | 11 | 24 | 5.50E-07 | 0.072 | 3.53E+00 | -1.14E+00 |
0.508 | 4345.59 | 12 | 22 | 7.17E-07 | 0.094 | 3.64E+00 | -1.03E+00 |
0.048 | 6030.82 | 13 | 24 | 9.67E-07 | 0.126 | 3.78E+00 | -9.00E-01 |
0.056 | 6979.77 | 14 | 23 | 1.22E-06 | 0.159 | 3.84E+00 | -7.99E-01 |
0.076 | 9514.46 | 16 | 24 | 1.92E-06 | 0.25 | 3.98E+00 | -6.02E-01 |
0.104 | 12985.61 | 18 | 24 | 2.75E-06 | 0.359 | 4.11E+00 | -4.45E-01 |
0.132 | 16481.74 | 20 | 24 | 3.58E-06 | 0.467 | 4.22E+00 | -3.31E-01 |
0.165 | 20602.18 | 22 | 25 | 4.42E-06 | 0.577 | 4.31E+00 | -2.39E-01 |
0.191 | 23848.58 | 24 | 26 | 5.25E-06 | 0.685 | 4.38E+00 | -1.64E-01 |

Oil - Derived analysis
V...

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