A5041494531- Ship Hydrodynamics and Maneuverability
- Fluid Dynamics Simulations and Interactions
- Maritime Transport Emissions and Efficiency
- Structural Integrity and Reliability Analysis
- Wave and Wind Energy Systems
- Cavitation Phenomena in Pumps
- Ocean Waves and Remote Sensing
- Maritime Navigation and Safety
- Spacecraft and Cryogenic Technologies
- Fluid Dynamics and Vibration Analysis
- Engineering Applied Research
- Water Systems and Optimization
- Probabilistic and Robust Engineering Design
- Aerospace and Aviation Technology
- Tribology and Lubrication Engineering
- Arctic and Antarctic ice dynamics
- Hydraulic and Pneumatic Systems
- Meteorological Phenomena and Simulations
- Maritime Ports and Logistics
- Marine Biology and Environmental Chemistry
- Robotic Path Planning Algorithms
- Vehicle Routing Optimization Methods
- Marine and Coastal Research
- Fluid Dynamics and Turbulent Flows
University of Strathclyde
2017-2025
Adjusting a vessel's trim and draught to enhance resistance characteristics is promising strategy improve the energy efficiency of maritime transport. However, vast majority scientific effort has been directed at such gains in deep, unrestricted waters. Shallow confined waters modify flow pressure distribution around ship, altering considerably curve. This study aims elucidate increase effects on ship's while advancing through restricted waterway using Computational Fluid Dynamics. The...
Upon entering shallow waters, ships experience a number of changes due to the hydrodynamic interaction between hull and seabed. Some these are expressed in pronounced increase sinkage, trim resistance. In this paper, numerical study is performed on Duisburg Test Case (DTC) container ship using Computational Fluid Dynamics (CFD), Slender-Body theory various empirical methods. A parametric comparison behaviour performance estimation techniques waters for varying channel cross-sections speeds...
Shallow waters influence the behaviour and performance of a vessel by modifying local pressure distribution, wave making, boundary layer thickness. The thickness is also influenced surface roughness. No previous studies have investigated combined effects shallow water contributions roughness on ship resistance. This study aims to fill this knowledge gap in literature using Unsteady Reynolds Averaged Navier-Stokes modelling. Results show that total resistance coefficient increases between...
Predicting ship resistance with high accuracy is essential to reduce fuel consumption. Of the two currently available methods, extrapolation from models-scale using towing tank results shows levels of uncertainty, and while computational fluid dynamics a promising option this recent full-scale simulations show persistently errors. Another way uncertainty understand scale effects devise strategies account them. In paper, we explore on trim sinkage through numerical viscous linear scaling...
This study focuses on the manoeuvring characteristics of model- and full-scale ships. Various methods, including free-running model tests (FRMTs), computational fluid dynamics (CFD), theoretical approaches, were employed to estimate ship performance. However, these methods are typically simulated at model-scale, which introduces discrepancies in Reynolds number due Froude scaling laws. Although numerous studies have investigated scale effects, most concentrated resistance, with limited...
With the rapid advent of computational methods in all fields engineering, several areas have emerged as significant sources ambiguity. Among these is selection a turbulence model to close Reynolds averaged Navier-Stokes equations. In ship hydrodynamics, this has been particularly difficult resolve due complex nature problem. The present study aims alleviate ambiguity inherent field. This done by performing series tests on models and comparing outcomes with experimental results. results are...
The problem of predicting a ship's form factor and associated scale effects has been subject to many investigations in recent years. In this study, an attempt is made investigate whether the influenced by change speed numerically modelling geosim series KCS hull means RANS solver. turbulence dependence also studied altering closure model among three widely used approaches (the k-ω, k-ω SST, k-ε models). results show that at very low speeds (Froude numbers range 0.02–0.06) numerical predicts...
Installing an energy saving device such as a pre-swirl duct (PSD) is major investment for ship owner and prior to order reliable prediction of the savings required. Currently there no standard how be carried out, possible alternatives are both model-scale tests in towing tanks with associated scaling procedures, well methods based on computational fluid dynamics (CFD). This paper summarizes CFD benchmark study comparing industrial state-of-the-art ship-scale predictions power reduction...
Many ship accidents are experienced by small boats. With a large number of fishing boats in Indonesia, the risk potential is high. Therefore, an operability analysis must be conducted for various loading conditions to address any safety issues due severe vessel motion. The net cargo boat will change during its operation at sea and then affect vessel's seakeeping characteristics. This study aims determine effect changes load their on traditional boat's considering ship's intact stability. In...
Shallow water studies of ship hydrodynamics typically examine a single, constant underwater canal cross-section at time. In practice, the cross-sectional area and shape waterway is rarely maintained over long distances. This study presents an attempt to quantify effects abruptly varying depth by numerically modelling such condition using CFD. The results show that waves propagate refract in numerical towing tank physically consistent manner showing less than 0.1% error dissipation solitary...
A ship sailing at the wave speed in shallow water produces a complex pattern including downstream disturbance addition to periodically generated upstream disturbance. The component consists of solitary waves which are bow and emitted forward as soon local depth is sufficiently modified enabling them bypass limit. Reynolds Averaged Navier-Stokes numerical simulations carried out explore this phenomenon fully non-linear viscous virtual towing tank cases where sails waterway centreline well...
There are approximately 7,000 miles of inland waterways in the UK, many them built during 18th and 19th centuries principally to transport bulk materials. These provide numerous benefits society economy. However, they have untapped potential for freight which could be released more efficient solutions compared other modes transport. In addition providing reduce emissions from land or air transportation, also bring environmental public health local communities. Therefore, these blue-green...
The acceleration resistance of a vessel advancing in shallow water is investigated. Four intensities and two depths are modelled using the CFD potential flow methods. results show pronounced peak exists near critical depth Froude number, but its location magnitude sensitive to intensity depth. Excellent agreement between obtained from methods found low high number ranges regardless or acceleration, indicating that linear unsteady can provide robust at cost those ranges. position nonlinear...
The numerical simulation of ship flows has evolved into a highly practical approach in naval architecture. In typical virtual towing tanks, the principle Galilean relativity is invoked to maintain as fixed, while surrounding water prescribed flow past it. This assumption may be identified, at least partly, being responsible for wide-scale adoption computational solutions within practitioners’ toolkits. However, it carries several assumptions, such levels inlet turbulence and their effect on...