A modified defect function for wave boundary layers
Yunfei Teng,Shankho Boron Ghosh,Lin Lu,Liang Cheng,Liang Cheng,Feifei Tong,Feifei Tong,Guoqiang Tang +7 more
4
TL;DR: In this article, a new defect function is proposed to predict the first harmonic motion in turbulent wave boundary layer (WBL) flows, based on the existing and newly acquired experimental evidences over a universal range of the governing flow parameters (A/ks & Re), taking the advantage of the existing defect function models.
read more
About: This article is published in Coastal Engineering. The article was published on 01 Jan 2022. and is currently open access. The article focuses on the topics: Amplitude & Function (biology).
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
An empirical model for velocity in rough turbulent oscillatory boundary layers
TL;DR: In this paper , an empirical model for the streamwise velocity in oscillatory boundary layer flow, valid in the rough turbulent regime, is presented, which consists of simple expressions that require only the free-stream velocity time-series and equivalent sand-grain roughness length of the bed to be known a priori.
Analytical solutions of turbulent boundary layer beneath forward-leaning waves
Yiqin Xie,Jifu Zhou,Xu Wang,Jinlong Duan,Yongjun Lu,Shouqian Li +5 more
On the maximum velocity profile of wave boundary layer flows in the very rough turbulent regime
Yunfei Teng,Feifei Tong,Yi Liu,Lina Jia,Zhanjie Chen,Zhe Gao,Liang Cheng,Guoqiang Tang,Lin Lü,Chen Li +9 more
TL;DR: The maximum velocity profile in wave boundary layer flows exhibits a large overshoot, which increases with decreasing A/ks. The overshoot is influenced by the gap flow accelerated around roughness elements. A three-parameter defect function is proposed to describe the maximum velocity profile.
Hydrodynamic forces on subsea cables immersed in wave boundary layers
Yunfei Teng,Terry Griffiths,Hongwei An,Scott Draper,Guoqiang Yang,Henning Mohr,D. White,Antonino Fogliani,Liang Cheng +8 more
TL;DR: In this paper , the authors investigated the hydrodynamic forces on small-diameter cables (50 mm ≤ D ≤ 200 mm) under wave conditions and found that wave boundary layers significantly affect the forces on cables in contact with the seabed.
References
On the Effect of the Internal Friction of Fluids on the Motion of Pendulums
George Gabriel Stokes
- 01 Jul 2009
TL;DR: In this paper, the reduction to a vacuum correction is considered, which is the only correction that is necessary for a simple pendulum to swing in a vacuum environment, due to the buoyancy of the fluid.
Combined wave and current interaction with a rough bottom
TL;DR: In this paper, an analytical theory is presented to describe the combined motion of waves and currents in the vicinity of a rough bottom and the associated boundary shear stress, and the resulting linearized governing equations are solved for the wave and current kinematics both inside and outside the wave boundary layer region.
1.5K
•Book
Coastal Bottom Boundary Layers and Sediment Transport
Peter Nielsen
- 21 Jul 1992
TL;DR: In this article, a review of bottom boundary layer flows including the boundary layer interaction between waves and steady currents is presented, and the concept of eddy viscosity for these flows is discussed in depth because of its relation to sediment diffusivity.
1.4K
•Book
Mechanics Of Coastal Sediment Transport
Jørgen Fredsøe,Rolf Deigaard +1 more
- 01 Nov 1992
TL;DR: The main objective of as mentioned in this paper is to describe from a deterministic point of view the sediment transport in the general wave-current situation, which is useful for students with a background in basic hydrodynamics.
1.1K
Turbulent oscillatory boundary layers at high Reynolds numbers
TL;DR: In this paper, the free-stream flow is a purely oscillating flow with sinusoidal velocity variation, and mean and turbulence properties were measured mainly in two directions, namely in the streamwise direction and in the direction perpendicular to the bed.