Accepted author manuscript, 2.79 MB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version, 8.18 MB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Investigation on hydrodynamic characteristics, wave-current interaction, and sensitivity analysis of submarine hoses attached to a CALM buoy
AU - Amaechi, Chiemela Victor
AU - Wang, Facheng
AU - Ye, Jianqiao
PY - 2022/1/17
Y1 - 2022/1/17
N2 - There is an increase in the utilisation of the floating offshore structure (FOS) called Catenary Anchor Leg Mooring (CALM) buoys and the attached marine hoses due to the increasing demand for oil and gas products. These hoses are flexible and easier to use but have a short service life of about 25 years. They are adaptable in ocean locations of shallow, intermediate, and deep waters. In this research, the numerical model was developed using a coupling method modelled by utilising ANSYS AQWA and Orcaflex dynamic models of the CALM buoy hoses. Two cases were compar-atively studied: Lazy-S and Chinese-lantern configurations, under ocean waves and current. Comparisons were also made between coupled and uncoupled models. This research presents the hydrodynamic characteristics with sensitivity analysis on the influence of waves, current attack angle, soil gradient, soil stiffness, and environmental conditions that influence the performance of marine hoses. The study comparatively looked at the configurations from dynamic amplification factors (DAF) on marine hoses. The results show that marine hoses can be configured easily to suit the designer’s need, seabed soil type, seabed topography, and the profiles are useful for manu-facturers. The sensitivity analysis also shows the effect of hose parameters on its hydrodynamic behaviour from wave-current interaction (WCI).
AB - There is an increase in the utilisation of the floating offshore structure (FOS) called Catenary Anchor Leg Mooring (CALM) buoys and the attached marine hoses due to the increasing demand for oil and gas products. These hoses are flexible and easier to use but have a short service life of about 25 years. They are adaptable in ocean locations of shallow, intermediate, and deep waters. In this research, the numerical model was developed using a coupling method modelled by utilising ANSYS AQWA and Orcaflex dynamic models of the CALM buoy hoses. Two cases were compar-atively studied: Lazy-S and Chinese-lantern configurations, under ocean waves and current. Comparisons were also made between coupled and uncoupled models. This research presents the hydrodynamic characteristics with sensitivity analysis on the influence of waves, current attack angle, soil gradient, soil stiffness, and environmental conditions that influence the performance of marine hoses. The study comparatively looked at the configurations from dynamic amplification factors (DAF) on marine hoses. The results show that marine hoses can be configured easily to suit the designer’s need, seabed soil type, seabed topography, and the profiles are useful for manu-facturers. The sensitivity analysis also shows the effect of hose parameters on its hydrodynamic behaviour from wave-current interaction (WCI).
KW - ocean wave hydrodynamics
KW - catenary anchor leg mooring (CALM) buoy
KW - Lazy-S configuration
KW - Chinese-Lantern configuration
KW - marine bonded hose
KW - sensitivity
KW - submarine hose
KW - floating hose
KW - hydrodynamics
KW - ocean engineering
KW - bonded marine hoses
KW - marine riser
KW - ocean waves
KW - floating offshore platform (fos)
KW - wave–current interaction (WCI)
U2 - 10.3390/jmse10010120
DO - 10.3390/jmse10010120
M3 - Journal article
VL - 10
JO - Journal of Marine Science and Engineering (JMSE)
JF - Journal of Marine Science and Engineering (JMSE)
SN - 2077-1312
IS - 1
M1 - 120
ER -