Understanding Capsular Contraction and IOL Decentration in Toric and EDOF Lenses: Clinical and Biomechanical Insights. [PDF]
Clin OphthalmolGurnani B, Kaur K.
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Membrane-Mediated Force Transduction Drives Stick-Slip Motion of Lipid Vesicles. [PDF]
Adv Sci (Weinh)Magrinya P +3 more
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Adaptive Tweezers Based on Differential Hydrophilic-Hydrophobic Surfaces for the Manipulation of Micro-Objects. [PDF]
ACS OmegaBian X, Feng M, Shen X.
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Molecular Origin of Aneotropy and Related Surface Tension Anomalies in Hydrogenated and Fluorinated Alcohol Mixtures: New Experimental Data and Theoretical Molecular Modeling. [PDF]
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Minimizing Interference Between Top Tension Risers for Tension Leg Platforms
Volume 4B: Pipeline and Riser Technology, 2013Interference between TTRs is a key design challenge. For spars, this is typically mitigated by having a large spacing between wellheads, thus increasing the distance between risers along the water depth. However, due to lower TTR tensioner stroke limits combined with larger vessel offsets, the feasibility of spacing out the wellheads for TTRs on a TLP ...
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Parametric instability of a riser is caused by fluctuation of its tension in time due to the heave motion of floating platform. Many studies have tackled the problem of parametric instability of a riser with constant tension. However, tension in the riser actually varies linearly from the top to the bottom due to the effect of gravity.
, Yougang Tang, Tang Yougang
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Multi-Mode Motion Dynamics of a Top Tensioned Riser Excited by Vortices and Varying Tension
International Journal of Bifurcation and Chaos, 2022A coupled model of a top tensioned riser (TTR) under combined excitations from vortices and time-varying tension is proposed. And the van der Pol oscillator is introduced to simulate the time-varying characteristics of vortex shedding. The first three mode approximations as a six degree-of-freedom (DOF) system of vibrations of the fluid-structure ...
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Modeling Approach of Hydropneumatic Tensioner for Top-Tensioned Riser
Journal of Offshore Mechanics and Arctic Engineering, 2018A three-dimensional (3D) finite element analysis (FEA) model of top-tensioned riser (TTR) with hydropneumatic tensioner is proposed in this work. First, the tension calculation equation of the hydropneumatic system is derived, and the kinematic relationship of the platform–tensioner–riser system is established.
Baiquan Chen +5 more
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Interference of Top Tensioned Risers for Tension Leg Platforms
Volume 5B: Pipelines, Risers, and Subsea Systems, 2017Dry tree top-tensioned risers (TTRs) are widely used on floating production systems such as TLPs and Spars for drilling, completion, workover and production. The interference between neighboring TTRs is an important consideration which has a direct impact on the total TTR payload budget and the wellbay size for floater sizing and cost.
Hanqing Zhang, Derek Smith
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Output feedback control of a flexible marine riser with the top tension constraint
Systems & Control Letters, 2022zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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