Blar i NTNU Open på forfatter "Li, Yan"
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A Framework for Modeling Linear Surface Waves on Shear Currents in Slowly Varying Waters
Li, Yan; Ellingsen, Simen Andreas Ådnøy (Journal article; Peer reviewed, 2019)We present a theoretical and numerical framework—which we dub the direct integration method (DIM)—for simple, efficient, and accurate evaluation of surface wave models allowing presence of a current of arbitrary depth ... -
Achieving the Sustainable Development Goals in the post-pandemic era
Zhao, Wenwu; Yin, Caichun; Hua, Ting; Meadows, Michael E.; Li, Yan; Liu, Yanxu; Cherubini, Francesco; Pereira, Paulo; Fu, Bojie (Peer reviewed; Journal article, 2022)The COVID-19 pandemic continues to pose substantial challenges to achieving the Sustainable Development Goals (SDGs). Exploring systematic SDG strategies is urgently needed to aid recovery from the pandemic and reinvigorate ... -
An Analytical Model of Floating Offshore Wind Turbine Blades Considering Bending-Torsion Coupling Effect
Qu, Xiaoqi; Tang, Yougang; Gao, Zhen; Li, Yan; Liu, Liqin (Chapter, 2018)In this paper, an analytical model is proposed to describe the nonlinear vibration of blades on floating offshore wind turbine (FOWT). The bending-torsion coupling equations are derived based on Hamilton’s principle. ... -
Comparative study of short-term extreme responses and fatigue damages of a floating wind turbine using two different blade models
Qu, Xiaoqi; Li, Yan; Tang, Yougang; Chai, Wei; Gao, Zhen (Journal article; Peer reviewed, 2020)In this work, two different blade structural models are used to estimate the blade deformations and the global structural responses of a 10MW floating offshore wind turbine (FOWT). One model is based on the Euler-Bernoulli ... -
Coupled effects of wave and depth-dependent current interaction on loads on a bottom-fixed vertical slender cylinder
Xin, Zirui; Li, Xin; Li, Yan (Peer reviewed; Journal article, 2023)The coupled effects of waves and a subsurface current on the hydrodynamic loads on offshore slender structures in coastal water regions have been examined in this paper, especially the coupling of the weak nonlinearity of ... -
East Asian Summer Monsoon Representation in Re-Analysis Datasets
Huang, Bo; Cubasch, Ulrich; Li, Yan (Journal article; Peer reviewed, 2018)Eight current re-analyses—NCEP/NCAR Re-analysis (NCEPI), NCEP/DOE Re-analysis (NCEPII), NCEP Climate Forecast System Re-analysis (CFSR), ECMWF Interim Re-analysis (ERA-Interim), Japanese 55-year Re-analysis (JRA-55), NASA ... -
Effect on Doppler Resonance From a Near-Surface Shear Layer
Smeltzer, Benjamin Keeler; Li, Yan; Ellingsen, Simen Andreas Ådnøy (Chapter, 2017)For waves generated by a wave source which is simultaneously moving and oscillating at a constant frequency ω, a resonance is well known to occur at a particular value τres of the nondimensional frequency τ = ωV/g (V: ... -
HSP90 C-terminal domain inhibition promotes VDAC1 oligomerization via decreasing K274 mono-ubiquitination in Hepatocellular Carcinoma
Zhang, Jinxin; Liu, Lixia; Li, Yan; Huang, Yaling; Xiao, Senbo; Deng, Zihao; Zheng, Zhenming; Li, Jieyou; Liang, Manfeng; Xie, Guantai; Chen, Xiao; Deng, Yaotang; Tan, Wenchong; Su, Hairou; Wu, Guibing; Cai, Chunqing; Chen, Xuemei; Zou, Fei (Peer reviewed; Journal article, 2023)Voltage-dependent anion-selective channel protein 1 (VDAC1) is the most abundant protein in the mitochondrial outer membrane and plays a crucial role in the control of hepatocellular carcinoma (HCC) progress. Our previous ... -
Initial Value Problems for Water Waves in the Presence of a Shear Current
Li, Yan; Ellingsen, Simen Andreas Ådnøy (Proceedings of the twenty-fifth International Ocean and Polar Engineering Conference;ISOPE 2015, Chapter; Peer reviewed, 2015)We obtain a general solution for the initial value problems of water waves with a shear current of uniform vorticity beneath the surface in three dimensions. Linearized governing equations and boundary conditions including ... -
Multiple resonances of a moving oscillating surface disturbance on a shear current
Ellingsen, Simen Andreas Ådnøy; Li, Yan (Journal article; Peer reviewed, 2016) -
Statistics of weakly nonlinear waves on currents with strong vertical shear
Zheng, Zibo; Li, Yan; Ellingsen, Simen Andreas Ådnøy (Journal article; Peer reviewed, 2023) -
Surface water waves on depth dependent flows
Li, Yan (Doctoral theses at NTNU;2017:194, Doctoral thesis, 2017)The present thesis provides essential insights into surface water waves propagating atop a horizontal current whose magnitude and direction may vary arbitrarily with water depth. A comprehensive theory in this regard is ... -
Surface wavepackets subject to an abrupt depth change. Part 1. Second-order theory
Li, Yan; Zheng, Yaokun; Lin, Zhiliang; Adcock, Thomas A.A.; van den Bremer, Ton S. (Peer reviewed; Journal article, 2021)This paper develops second-order theory for narrow-banded surface gravity wavepackets experiencing a sudden depth transition based on a Stokes and multiple-scales expansion. As a wavepacket travels over a sudden depth ... -
Surface wavepackets subject to an abrupt depth change. Part 2. Experimental analysis
Li, Yan; Draycott, Samuel; Adcock, Thomas A.A.; van den Bremer, Ton S. (Peer reviewed; Journal article, 2021)Surface gravity wavepackets in intermediate water depth experiencing an abrupt depth decrease are investigated experimentally. The experiments provide validation for the second-order (in steepness) theory for narrow-banded ... -
Surface Waves Generated by a Translating and Oscillating Source Atop Realistic Shear Flows
Li, Yan; Ellingsen, Simen Andreas Ådnøy (Chapter, 2018)We analyze surface waves generated by a translating, oscillating surface disturbance atop a horizontal background flow of arbitrary depth dependence, with a focus on determining the Doppler resonance. For a critical value ... -
Three dimensional surface gravity waves of a broad bandwidth on deep water
Li, Yan (Journal article, 2021)A new nonlinear Schrödinger equation (NLSE) is presented for ocean surface waves. Earlier derivations of NLSEs that describe the evolution of deep-water waves have been limited to a narrow bandwidth, for which the bound ... -
Transient wave resistance upon a real shear current
Li, Yan; Smeltzer, Benjamin Keeler; Ellingsen, Simen Andreas Ådnøy (Journal article; Peer reviewed, 2018)We study the waves and wave-making forces acting on ships travelling on currents which vary as a function of depth. Our concern is realism; we consider a real current profile from the Columbia River, and model ships with ... -
Weakly nonlinear broadband and multi-directional surface waves on an arbitrary depth: A framework, Stokes drift, and particle trajectories
Li, Yan; Li, Xin (Peer reviewed; Journal article, 2021)Surface gravity waves in coastal waters are broadband and multi-directional, whose quadratic properties are of considerable engineering and scientific interest. Based on a Stokes expansion and an envelope-type framework, ... -
Weakly nonlinear surface waves on vertically sheared currents
Zheng, Zibo (Doctoral theses at NTNU;2024:57, Doctoral thesis, 2024)Extreme waves, also known as rogue waves, have much larger heights than surrounding waves, which are of great danger to ships and coastal structures. A subsurface shear current is able to change the properties of the surface ... -
Why rogue waves occur atop abrupt depth transitions
Li, Yan; Draycott, Samuel; Zheng, Yaokun; Lin, Zhiliang; Adcock, Thomas A. A.; van den Bremer, Ton S. (Journal article; Peer reviewed, 2021)Abrupt depth transitions (ADTs) have recently been identified as potential causes of ‘rogue’ ocean waves. When stationary and (close-to-) normally distributed waves travel into shallower water over an ADT, distinct spatially ...