Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 5American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 145
... flow regime creates bubbles . This conclusion is tested by measurements on two- phase flow in a Freon test loop . The results confirm that the pressure spectra inside the pipe show pronounced spectral peaks , at about 140 dB ( referred ...
... flow regime creates bubbles . This conclusion is tested by measurements on two- phase flow in a Freon test loop . The results confirm that the pressure spectra inside the pipe show pronounced spectral peaks , at about 140 dB ( referred ...
Page 148
... flow . The peaks are marked with levels referred to 1 Pa , the standard reference level for acoustic measurements . The spectra show distinct peaks at about 1.5 kHz and 3.5 kHz . These peaks are thought to reflect radial oscillations of ...
... flow . The peaks are marked with levels referred to 1 Pa , the standard reference level for acoustic measurements . The spectra show distinct peaks at about 1.5 kHz and 3.5 kHz . These peaks are thought to reflect radial oscillations of ...
Page 149
... flow conditions , as long as the flow is slugging and bubbles are present . The expected ambient noise levels are about 60 dB . The exact level of ambient noise depends on a number of factors , including shipping , rain , fish and ...
... flow conditions , as long as the flow is slugging and bubbles are present . The expected ambient noise levels are about 60 dB . The exact level of ambient noise depends on a number of factors , including shipping , rain , fish and ...
Contents
Propagation and Diffraction of Cnoidal Waves | 9 |
Dynamic Stresses and Motions of Offshore Pipelines During Laying | 17 |
TimeDevelopment of Scour Induced Free Spans of Pipelines | 25 |
Copyright | |
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applied axial base metal brazing cables calculated carbon equivalent chemical composition cnoidal waves coating cooling crack CTOD curve cycle defects developed dew point temperature diameter dynamic tension force effect electrode equation field Figure fitness-for-purpose flaws flow foam forge welding fracture fracture mechanics free span frequency friction welding gas pipeline GMAW Gr.B HAZ hardness heat input hydrocarbon dew point induction heating inner pipe installation insulation internal J-Lay length line pipe linepipe load material maximum measured mechanical properties method microstructure nonlinear offshore pipelines operation ovalization parameters pipe material pipe wall pipeline plate pressure problem procedure propagation PUFI PWHT ratio reeling S-N curves seam weld simulation Specimen steel stress surface T-cross portion tensile strength thermal thermal insulation toughness tube UOE pipe velocity wall thickness water depth water dew point weld metal X80 grade yield strength