Browsing Institutt for maskin- og marinfag by Document Types "Peer reviewed"
Now showing items 41-60 of 85
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A Kinematic Variable for Analyzing Snake Robot Dynamics
(Peer reviewed; Journal article, 2024)This paper presents a modern mathematical method to analyze snake robot dynamics. The method is rooted in three facets of contemporary mathematics: Cartan’s concept of endowing all moving bodies with their own reference ... -
Lab-scale measurements of wind farm blockage effects
(Peer reviewed; Journal article, 2022)The inflow an individual wind turbine experiences in a farm layout is strongly dependent on flow interaction effects with the turbines surrounding it. In addition to the well-known wake flows, lateral and upstream flow ... -
Layout and yaw optimisation of an offshore wind farm through analytical modelling
(Peer reviewed; Journal article, 2023)In this work, a computational tool for analytical large scale modelling of offshore wind farms is presented. Using Horns Rev 1 as a reference baseline, an optimal layout and yaw angle setting for one wind direction based ... -
Linear Modelling of the Mass Balance and Energy Demand for a Recirculating Aquaculture System
(Peer reviewed; Journal article, 2023)This work seeks to understand the predominant drivers affecting energy demand for a recirculating aquaculture system (RAS) by developing a numerical model in Matlab coupled with Aspen HYSYS and validating against measurement ... -
Local and global assessments of a subsea riser-spool connection under dropped impact loads
(Peer reviewed; Journal article, 2021)Subsea riser tube and spool is often used together to connect the riser of jacket to flowline or pipeline. Due to its limited size (less than 200 m), the location is within the lifting zones of the platform. Consequently, ... -
Magnetic enhancement of photothermal heating in ferrofluids
(Journal article; Peer reviewed, 2018)Abstract. This contribution describes a multiphase CFD model, capable of simulating convective mass and heat transfer in a ferrofluid. The model was used for a parametric analysis of thermomagnetic convection, demonstrating ... -
Materials and simulation modelling of a crash-beam performance - A comparison study showing the potential for weight saving using warm-formed ultra-high strength aluminium alloys
(Journal article; Peer reviewed, 2017)Forming complex parts out of high and ultra-high strength aluminium alloys has proved to be more challenging in comparison to the currently used deep drawing steels. The novel "Warmforming-Process" offers the potential to ... -
A Matrix FMEA Analysis of Variable Delivery Vane Pumps
(Peer reviewed; Journal article, 2021)Hydraulic systems are widely used in the aeronautic, machinery, and energy industries. The functions that these systems perform require high reliability, which can be achieved by examining the causes of possible defects ... -
Mechanical and Microstructural Analysis of Friction Surfaced Aluminum Coatings on Silicon Nitride Ceramic Substrates
(Peer reviewed; Journal article, 2022)The lack of suitable techniques for joining Si3N4 ceramics with metals has limited the usage of this otherwise outstanding material for composite applications. In this study, aluminum AlMgSi0.5 (EN AW-6060) was coated onto ... -
Microstructural and interface properties of aluminium alloy coatings on alumina applied by friction surfacing
(Peer reviewed; Journal article, 2023)Two large groups of materials, namely metals and ceramics, are used in mass quantities in today’s industry because of their outstanding properties. To achieve higher product performance dissimilar materials need to be ... -
Modeling Water Droplet Freezing and Collision with a Solid Surface
(Journal article; Peer reviewed, 2021)Water droplets released from the sea surface represent one of the major causes of ice accretion on marine vessels. A one-dimensional model of the freezing of a spherical water droplet moving in cold air was developed. The ... -
Modelling of a bluff-body stabilised premixed flames close to blow-off
(Peer reviewed; Journal article, 2021)As emission legislation becomes more stringent, the modelling of turbulent lean premixed combustion is becoming an essential tool for designing efficient and environmentally friendly combustion systems. However, to predict ... -
Modelling of Conditional Scalar Dissipation Rate in Turbulent Premixed Combustion
(Journal article; Peer reviewed, 2021)In turbulent premixed flames, for the mixing at a molecular level of reactants and products on the flame surface, it is crucial to sustain the combustion. This mixing phenomenon is featured by the scalar dissipation rate, ... -
A new method to determine the added mass of two- dimensional objects in potential flow.
(Peer reviewed; Journal article, 2022)The random walk source model is a displacement model where particles coming out of a source are displacing neighbor particles. The deformation of particle fronts moving towards objects carry the information about the fluid ... -
Non-invasive studies of multiphase flow in process equipment. Positron emission particle tracking technique.
(Peer reviewed; Journal article, 2017) -
Novel Bio-compatible Tracers for Positron Emission Particle Tracking
(Peer reviewed; Journal article, 2020)To study the flow of objects in opaque flow processes, the PEPT (positron emission particle tracking) technique may be utilized. The PEPT technique is based on the same principle of positron emission tomography (PET). Both ... -
Numerical Analysis of an Articulated Hybrid Offshore Wind Turbine Concept
(Peer reviewed; Journal article, 2023)The concept of a "hybrid offshore wind turbine" originated from articulated loading platforms (ALPS). In this study, we have developed a concept design for the major structural components. Orcaflex was used to create a ... -
Numerical analysis of erosion due to nanoparticles in a pipe elbow
(Journal article; Peer reviewed, 2018)Flows of fluids laden with small particles in pipes are common in industry. An interesting and still unexplored issue is erosion of walls due to impact of particles. The main focus of our research was on nanoparticles. ... -
Numerical investigation of a radially cooled turbine guide vane using air and steam as a cooling medium
(Peer reviewed; Journal article, 2021)Gas turbine performance is closely linked to the turbine inlet temperature, which is limited by the turbine guide vanes ability to withstand the massive thermal loads. Thus, steam cooling has been introduced as an advanced ... -
Numerical investigation of direct absorption solar collectors based on carbon black nanofluids
(Peer reviewed; Journal article, 2023)A novel model of a rectangular direct absorption solar collector (DASC) based on carbon black (CB) nanofluids for concentrated solar power is presented herein. Distributions of temperature, velocity, volume fraction of ...