Recently, by the Shanghai full penetration deep sea offshore energy frontier science research base of invited experts held two lecture, professor Bai Xinglan zhejiang ocean university and tianjin university professor qing-he zhang respectively present the topic deep water steel catenary riser coupling analysis the key technology research, nearshore wave - flow - sediment coupling model and its application academic report.
Nearly 400 persons in charge of relevant functional departments, schools, research bases and graduate students attended the conference.
The title of Professor Bai Xinglan's presentation is Research on Key Technologies for Coupling Analysis of Deepwater Steel Catenary Risers.
Based on the overall analysis of Steel Catenary Riser (SCR) and floating body, combined with local analysis of flexible joints and contact areas, a 3D nonlinear seabed model considering normal stiffness degradation and lateral resistance is established based on P-y curve. The effects of second-order motion of floating body on dynamic coupling characteristics of opposite tubes are investigated.
Through the tube-soil interaction model test, the dynamic response characteristics of SCR under the coupling action of floating body and seabed were explored from the aspects of floating body motion, internal force and curvature change of pipe, tube-soil interaction and so on.
The title of Professor Zhang Qinghe's presentation is Nearshore wave-fluid-Sediment Coupling Model and its Application.
Based on the introduction of a new concept of three-dimensional wave radiation stress, this report establishes the coupling model of SWAN wave and FVCOM water and sediment, and applies it to simulate the migration of sandy coastal sand bars, silty coastal sediment movement and channel silting, and the breaking of tidal channel sand bars.
Professor Zhang Qinghe's lecture attracted 300 participants from many universities and research institutes.
In the interactive session, the two professors expressed their opinions on the relevant questions raised by the participants, and had a warm and extensive exchange and discussion with Professor Zhang Hongsheng of the School of Ocean Science and Engineering and the teachers and students present.
This seminar is co-sponsored by the College of Marine Science and Engineering and Shanghai Full Penetration Far-reaching Offshore Energy and Power Frontier Science Research Base (Training).
Figure 1. Professor Bai Xinglan's academic report on Key Technologies for Coupling Analysis of Deepwater Steel Catenary Risers
Figure 2. Professor Zhang Qinghe's academic report on Nearshore wave-fluid-sediment Coupling Model and its Application