Outlier analysis of sloshing impact loads on liquid ship cargo
Abstract This paper introduces an outlier analysis which can improve the convergence of the statistical analysis results of sloshing model test data. The paper classify possible outliers in the sloshing model test into three categories and present a treatment method for each outlier. The developed outlier analysis is adapted to the model test results for […]
Prediction of slamming pressure considering fluid-structure interaction. Part I: numerical simulations
Abstract Marine structures are subjected to slamming loads characterised by high hydrodynamic pressure within short time durations. Such loads can cause local and global damages to structures. This paper, which is Part I in a series, reports a numerical investigation of slamming loads acting on flat stiffened plates and their dynamic response. The nonlinear explicit […]
Simplified contact-based segment expansion (CBSE) method for assessment of crashworthiness of double-hulled ship structure
Abstract A commonly assumed ship-to-ship collision scenario is a rigid ship bow hitting the side of a ship perpendicularly. A bulbous bow has a slender shape overall but a rounded end, while a stem has a sharp horizontal edge but a gently sloping body. It was found from numerical simulations that the stem collision induces […]
Fatigue damage assessment of offshore riser subjected to vortex-induced vibrations by SHEAR7
Abstract Marine risers are a critical component in transporting the produced hydrocarbons from the seabed to the topside facility and vice versa. These risers are subjected to VIV when encountered with ocean currents, leading to the accumulation of fatigue damage, which reduces the risers' service life. Estimation of fatigue damage is an important aspect to […]
Recent advances in understanding the flow over bluff bodies with different geometries at moderate Reynolds numbers
Abstract The application of unsteady incompressible flow phenomenon over the bluff bodies has received the attention of many researchers due to the rich and complex physics underpinning these flows, and thus requiring special attention in their modelling and numerical simulations. The wake that forms at the leeside of the bluff body is of particular interest. Reynolds number and geometry are in turn two […]
Zero-Shot Single-Microphone Sound Classification and Localization in a Building via the Synthesis of Unseen Features
Abstract In this paper, we propose a learning-based approach to identify the type and position of sounds using a single microphone in a real-world building. We attempt to treat this problem as a joint classification problem in which we predict the exact positions of sounds while classifying the types that are assumed to be from […]
Enhanced Kinetic Performance of Amine-Infused Hydrogels for Separating CO2 from CH4/CO2 Gas Mixture
Abstract The performance of amine-infused hydrogels (AIH) was investigated for capturing CO2 from CH4/CO2 gas mixture. The amine-infused hydrogel was prepared via simply mixing monoethanolamine (MEA) solution with dried hydrogel particles; then, systematic experiments were carried out to analyze the performance of the AIH particles. The obtained results suggest that the AIH particles quickly capture CO2 from the […]
Numerical Modelling of Dispersed Water in Oil Flows Using Eulerian-Eulerian Approach and Population Balance Model
Abstract Formation of a dispersed oil—water flow pattern is a common occurrence in flow lines and pipelines. The capability of predicting the size of droplets, as well as the distribution of dispersed phase volume fraction is of utmost importance for proper design of such systems. The present study aims at modelling dispersed water in oil […]
Ultrasonic Attenuation Characteristics of Glass-Fiber-Reinforced Polymer Hull Structure
Abstract Glass fiber-reinforced polymer (GFRP) ship structures have hull plate thicknesses of 10 mm or more and are fabricated using a higher proportion of resin matrix systems than E-glass fiber reinforcements. Therefore, GFRP is classified as a highly attenuative material, and this characteristic is a major cause of large errors in ultrasonic nondestructive testing for […]
Prediction of ship power based on variation in deep feed-forward neural network
Abstract Fuel oil consumption (FOC) must be minimized to determine the economic route of a ship; hence, the ship power must be predicted prior to route planning. For this purpose, a numerical method using test results of a model has been widely used. However, predicting ship power using this method is challenging owing to the uncertainty of […]
