Characteristics of Internal Waves Generated by a Self-propelled Model Under a Pycnocline

Chen, Ke (Shanghai Jiao Tong University) | Wang, Hongwei (Shanghai Jiao Tong University) | You, Yunxiang (Shanghai Jiao Tong University) | Zhang, Xinshu (Shanghai Jiao Tong University) | Shu, Minhua (Shanghai Jiao Tong University)

OnePetro 

In this paper, experiments are conducted for the characteristics of internal waves generated by a self-propelled model translating steadily below the strong pycnocline of a density-stratified fluid. The translational speed of the self-propelled model ranges from 0.06 to 1.4 m/s; the corresponding Froude number Fr DU=NmaxD ranges from 0.44 to 10.33. Two regimes of the internal waves are distinguished by the critical Froude number Frc D 2095. For Fr < Frc, the internal waves are stationary to the model and usually called body-generated waves. The maximum peak-peak amplitude Am first increases and then decreases with Fr and the peak Froude number Frp D1003, indicating a resonant response. For Fr > Frc, the internal waves are nonstationary to the model and usually called wake-generated waves. The maximum peak-peak amplitudes do not have an explicit growth trend with Fr similar to the towed model but change within a range. Introduction Internal waves (IWs) generated by a submerged model such as a towed sphere, a cylinder, or a self-propelled body and its associated turbulent wake in a stratified fluid are of great interest in oceanic hydrodynamics. Several classifications of IWs are proposed based on experimental observations. Lin et al. (1993) indicated that three regimes of IWs generated by a towed sphere could be identified: Lee waves, forced waves, and waves generated by the gravitational collapse of the turbulent wake. Bonneton et al. (1993) classified the IWs into four regimes with respect to the different sources: the sphere itself, wake collapse, excitation from the recirculation zone, and random turbulence. Robey (1997) proposed a more general classification consisting of only two types, body-generated and wake-generated IWs. The body-generated IWs are Lee waves, generated by the sphere itself and the following stationary separation bubble whose area is nearly equivalent to the recirculation zone. The wake-generated IWs are highly nonstationary, and the sources are complicated.

Duplicate Docs Excel Report

Title
None found

Similar Docs  Excel Report  more

TitleSimilaritySource
Hydrodynamic Performance of a Novel Floating Foundation for an Offshore Wind Turbine Under a Storm Condition1.000OnePetro
Time-Domain Fatigue Analysis of Multi-planar Tubular Joints for a Jacket-Type Substructure of Offshore Wind Turbines1.000OnePetro
Three-Dimensional Numerical Simulations of Flow Past a Rotating Circular Cylinder at a Reynolds Number of 5001.000OnePetro
A Novel Conceptual Telescopic Positioning Pile for VLFS Deployed in Shallow Water: Function Verification1.000OnePetro
Submarine Permafrost in the Laptev Sea1.000OnePetro
Method for Finding the Optimal Ship Route in Ice Based on Vector Geo-algorithms1.000OnePetro
CFD Simulation of Wave Energy Converters in Focused Wave Groups Using Overset Mesh1.000OnePetro
Focused Wave Interaction with Floating Structures by Virtual Boundary Force Method1.000OnePetro
Numerical Study of Focused Wave Interactions with a Single-Point Moored Hemispherical-Bottomed Buoy1.000OnePetro
CCP-WSI Blind Test Using qaleFOAM with an Improved Passive Wave Absorber1.000OnePetro
CCP-WSI Blind Test Series 3: A Nonlinear Froude-Krylov Modeling Approach1.000OnePetro
CCP-WSI Blind Test Series 3: CFD-Based Numerical Wave Tank Experiments Employing an Impulse Source Wave Maker1.000OnePetro
Quantifying the Predictive Capability of OpenFOAM 5.0: Focused Wave Impacts with Floating Bodies1.000OnePetro
A 3D Hybrid Model Coupling SPH and QALE-FEM for Simulating Nonlinear Wave-structure Interaction1.000OnePetro
A Blind Comparative Study of Focused Wave Interactions with Floating Structures (CCP-WSI Blind Test Series 3)1.000OnePetro
Analysis and Monitoring Methodology for Rolling Bearing Faults in the Hinge of a Soft Yoke Mooring System1.000OnePetro
Austenite Grain Growth Behavior after Recrystallization Considering Solute-Drag Effect and Pinning Effect1.000OnePetro
Material Design of Hot-rolled Steel Coils for Heavy Wall X70 Spiral Linepipes1.000OnePetro
Multidisciplinary Design Optimization of a Heavier-Than-Water Underwater Vehicle Using a Semi-Empirical Model1.000OnePetro
Nonlinear Filtering for Estimating Flow Speed around a Vibrating Rigid Circular Cylinder1.000OnePetro
A Regression Analysis Result for Water Waves on Irrotational Flow over a Horizontal Bed1.000OnePetro
Tsunami Inundation Forecasting System Based on a Database: A Case Study in Owase, Japan1.000OnePetro
Aeration Effects on Hydrodynamic Loads of Circular Cylinder’s High-speed Water Entry1.000OnePetro
Hydrodynamic Resonance of Three Identical Rectangular Boxes with Narrow Gaps by a CIP Method1.000OnePetro
Numerical and Experimental Study of a Horizontal Cylinder-type Wave Energy Converter with Off-centered Axes of Rotation1.000OnePetro
Use of Bayesian Network for Risk-Based Fatigue Integrity Assessment: Application for Topside Piping in an Arctic Environment1.000OnePetro
Assessing the Indirect Economic Losses of Sea Ice Disasters: An Adaptive Regional Input-Output Modeling Approach1.000OnePetro
Iceberg Towing in Newly Formed Ice1.000OnePetro
Iceberg Towing Experiments in the Barents and Kara Seas in 2016–20171.000OnePetro
Finite Element Modeling of Axial-Vertical Interaction Behavior of Buried Pipelines in Dense Sand1.000OnePetro
Measurements of Water-Wave Cloaking by an Array of Circular Cylinders1.000OnePetro
Yield Strength Prediction of UOE Pipes: From Forming to Flattening1.000OnePetro
Effect of Near-Surface Crustal Layers on Undrained Vertical Penetration Response of Subsea Pipelines1.000OnePetro
Experimental Investigation of Hydrodynamic Response of an Ocean Uranium Extraction Machine Attached to a Floating Wind Turbine1.000OnePetro
Sloshing Load Assessments for a Midscale Single-Row FLNG1.000OnePetro
Statistical Analysis of Turbulent Dispersion in the Sea Surface Layer Based on Satellite-Tracked Drifter Data1.000OnePetro
On the Coupling of Incompressible SPH with a Finite Element Potential Flow Solver for Nonlinear Free-Surface Flows1.000OnePetro
Switching Control for 3-D Waypoint Tracking of a Biomimetic Underwater Vehicle1.000OnePetro
Nonlinear Wave Loads on High-rise Pile Cap Structures in the Donghai Bridge Wind Farm1.000OnePetro
An FEA-Based Methodology for Assessing the Residual Strength of Degraded Mooring Chains1.000OnePetro
Influence of Different Load Histories on the Cyclic Material Behavior of Nodular Cast Iron for Thick-walled Application1.000OnePetro
Qualitative Estimation of Momentary Liquefaction in a Sandy Seabed Based on Pore Water Pressure1.000OnePetro
Undrained Capacity of Suction Piles Subjected to Moment Loading1.000OnePetro
Investigation of the Motion Accuracy Influence on Sloshing Model Test Results1.000OnePetro
A Study on Sloshing Behavior for Moss-type LNG Tank Based on SPH Numerical Simulation and Large-scale Model Experiment1.000OnePetro
Numerical Simulation of the Generation and Evolution of Internal Tides and Solitary Waves at Sofala Shelf Break1.000OnePetro
Numerical Investigation of a Novel Wave Absorbing Method Based on Gap Resonance1.000OnePetro
Experimental and Numerical Simulation of Girth Welded Joints of Dissimilar Metals in Clad Pipes1.000OnePetro
Numerical Analysis of Carbon Fiber Cables for Mooring Lines Under Tensile and Bending Loading1.000OnePetro
Hydrodynamic Design and Analysis of a Novel Vertical Axis Turbine1.000OnePetro
Course and Depth Control for a Biomimetic Underwater Vehicle - RobCutt-I1.000OnePetro
PLIC-VOF Improvement Using Signed Distance Function for Incompressible Interfacial Flow1.000OnePetro
Prediction of Course Stability of Towed Offshore Structures by Computational Fluid Dynamics1.000OnePetro
Applying the Bisection Search Method to Search the Maximum Environmental Conditions in DPCap Analysis for Marine Vessels1.000OnePetro
Effects of Particle-Size Distribution on the Viscoelasticity of Artificial Methane-Hydrate-Bearing Sand1.000OnePetro
Testing of Laterally Loaded Rigid Piles with Applied Overburden Pressure1.000OnePetro
Lift Force Reduction by Means of a Diffuser for Gravity Base Foundations in Waves and Currents1.000OnePetro
Evaluation of p-y Approaches for Large-Diameter Monopiles in Sand1.000OnePetro
Numerical Analysis of Inclined Uplift Capacity of Suction Caisson in Sand1.000OnePetro
Comparison of Lateral Behavior of Rock-Socketed Large-Diameter Offshore Monopiles in Sands with Different Relative Densities1.000OnePetro
Large Eddy Simulations of Flow Around Tandem Cylinders Close to a Horizontal Wall1.000OnePetro
Sloshing Assessment of FLNG Cargo Containment System Due to Sloshing Loads in Bimodal Seas: Effect of Wave Intensity1.000OnePetro
High-Precision Simulation Study of Hurricane Juan-Generated Waves in Coastal Shallow Water1.000OnePetro
CFD Simulation of Bow and Stern Slamming on a Container Ship in Random Waves1.000OnePetro
Comparison of Ice Load Development on Non-Planar Surface1.000OnePetro
Comparison and Cause Analysis of Ice-Induced Structural Vibrations on Different Ice-Breaking Cones1.000OnePetro
Strength and Deformation Capacity of Corroded Pipe: Laboratory Tests and FEM Analyses1.000OnePetro
Unstable Fracture Preventive Design in Large Vessels and Offshore Structures1.000OnePetro
Evaluation of Bending Strength of the Vibratory Welded Joint Using Regression Technique1.000OnePetro
Field Study on the Influence of Floating Mud on the Long-Term Performance of Sand Capping Technique on Nutrient Release Reduction1.000OnePetro
Discussion of CFD Simulation of Bow and Stern Slamming on a Containership in Random Waves1.000OnePetro
Probabilistic Lateral Buckling Assessment1.000OnePetro
Whipping Investigations Based on Large-Scale Measurements and Experimental Fatigue Testing1.000OnePetro
Offshore In-Service Resistance of Double Joints Under Strain-Based Conditions1.000OnePetro
Numerical Simulation of Brittle Crack Propagation and Arrest in Steels Considering Shear-Lip Formation1.000OnePetro
Onshore Pipeline High-Grade Steel for Challenge Utilization1.000OnePetro
Study of the Runout of Granular Columns with SPH Methods1.000OnePetro
Experimental Investigation of Non-similarity Slamming Phenomena in Geometrically Similar Tanks1.000OnePetro
Geomechanical Characteristics of Gneiss in Antarctica Determined by Freeze-Thaw Tests1.000OnePetro
Robust Diving and Composite Path Tracking Control of an Autonomous Underwater Vehicle1.000OnePetro
A Model for the Elastic Modulus of Hydrate-Bearing Sediments1.000OnePetro
Vortex Dynamics in Flow Instabilities and Biomimetic Flows1.000OnePetro
Effect of Impact Load on the Ice Cover During the Landing of an Airplane1.000OnePetro
Wave Pattern in Cloaking Phenomenon Around a Body Surrounded by Multiple Vertical Circular Cylinders1.000OnePetro
A Multiphase Compressible-Incompressible Particle Method for Water Slamming1.000OnePetro
2D Numerical ISPH Wave Tank for Complex Fluid–Structure Coupling Problems1.000OnePetro
Smoothed Particle Hydrodynamics Simulations of Dam-Break Flows Around Movable Structures1.000OnePetro
An Extended Boundary Integral Equation for Structures with Oscillatory Free-Surface Pressure1.000OnePetro
Seakeeping Analysis of a Wave-Piercing Catamaran Using URANS-Based Method1.000OnePetro
Scour Development Around Bucket Foundations1.000OnePetro
Laboratory Model Test for Heavy Metal-Contaminated Soil Remediation Using PVDs1.000OnePetro
Application of Quasi-Continuous Method to Open-Water Characteristics Predictions of Propellers with Energy-Saving Ducts1.000OnePetro
Prospects of Floating Wind Energy1.000OnePetro
Operability Analysis of Monopile Lowering Operation Using Different Numerical Approaches1.000OnePetro
Methods for Analysing Wave Slamming Loads on Truss Structures Used in Offshore Wind Applications Based on Experimental Data1.000OnePetro
Monopod Bucket Foundations Under Cyclic Lateral Loading1.000OnePetro
Bucket Foundation Response Under Various Displacement Rates1.000OnePetro
Experimental Study of Floating Offshore Platform in Combined Wind/Wave/Current Environment1.000OnePetro
Control Strategy for a Ventilated Supercavitating Vehicle in Initial Phase1.000OnePetro
Sloshing Risk Reduction in Membrane Tanks of FLNG by Interchanging Liquid Cargo Between Tanks1.000OnePetro