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Numerical Evaluation of Modal Properties Change of Railway Bridges during Train Passage
(Journal article; Peer reviewed, 2017)During the passage of vehicles over a bridge, both systems (vehicle and bridge) are coupled together. This coupling is generally accounted for in vehicle-bridge interaction analyses. It is also commonly acknowledged that ... -
Numerical Evaluation of Rotordynamic Coefficients for Compliant Foil Gas Seal
(Peer reviewed; Journal article, 2020)Compliant foil gas seal is one of the advanced cylindrical gas seal technologies and can be commonly used in the secondary flow system of an aero-engine. It can enhance the dynamic stability of the aero-engine by meeting ... -
Numerical Evaluation of T-stress under Mixed Mode Loading Through the Use of Coarse Meshes
(Journal article; Peer reviewed, 2018)The present paper investigates the employment of coarse meshes in evaluating the T-stress with the displacement method. Several finite element analyses have been carried out with different mesh refinements and accuracies. ... -
Numerical evaluation on parametric choices influencing segmentation results in radiology images—a multi-dataset study
(Peer reviewed; Journal article, 2021)Medical image segmentation has gained greater attention over the past decade, especially in the field of image-guided surgery. Here, robust, accurate and fast segmentation tools are important for planning and navigation. ... -
A numerical framework for estimating the effective reproduction number of infectious diseases from compartmental epidemic models
(Peer reviewed; Journal article, 2021)We present a numerical framework for estimating the effective reproduction number of infectious diseases from compartmental epidemic models. The idea is to augment the reproduction number as an extended state variable in ... -
A numerical framework for modelling the dynamics of open ocean aquaculture structures in viscous fluids
(Peer reviewed; Journal article, 2020)This paper presents a complete numerical framework for modelling open ocean aquaculture structures in waves and current using Computational Fluid Dynamics (CFD). A structural dynamics model is incorporated to account for ... -
Numerical Generation of Hill-Diagrams; Validation on the Francis99 Model Turbine
(Journal article; Peer reviewed, 2018)This article compares a numerically simulated, and an experimentally obtained Hill-Diagram. The Francis99 model turbine was used in the validation. By using steady-state simulations and passage modeling in ANSYS CFX, the ... -
A numerical geotechnical model for computing soil slides at banks of water reservoirs
(Peer reviewed; Journal article, 2020)Soil slides can occur when the water level in a lake or a reservoir is lowered. This may take place in situations when a reservoir is flushed to remove sediments. The current study describes a three-dimensional numerical ... -
Numerical implementation of a non-local GTN model for explicit FE simulation of ductile damage and fracture
(Journal article, 2021)In this study, we follow the work of Tvergaard and Needleman (1995, 1997) and Needleman and Tvergaard (1998) and present the numerical implementation and initial applications of a non-local Gurson-Tvergaard-Needleman (GTN) ... -
Numerical integrators for Lagrangian oceanography
(Peer reviewed; Journal article, 2020)A common task in Lagrangian oceanography is to calculate a large number of drifter trajectories from a velocity field pre-calculated with an ocean model. Mathematically, this is simply numerical integration of an Ordinary ... -
Numerical Investigation and Optimization of a District-Scale Groundwater Heat Pump System
(Peer reviewed; Journal article, 2023)Groundwater heat pump (GWHP) systems are acknowledged as renewable and sustainable energy sources that can effectively fulfill the heating and cooling requirements of buildings on a district level. These systems harness ... -
Numerical investigation into the effects of corrosion on the shear performance of pretensioned bridge girders with cast-in-place slabs
(Peer reviewed; Journal article, 2022)Corrosion and shear cracking are frequently observed near supports of pretensioned bridge girders in coastal climates, so non-linear finite element analysis was used to study the effect of corrosion on shear performance ... -
Numerical Investigation of 3D Flow around Two Tandem Cylinders
(Chapter, 2016)Circular cylinders in tandem arrangement are frequently encountered in marine applications, for example as dual pipelines and dual risers. Complex flows arise around tandem cylinders, inducing large fluctuating forces on ... -
Numerical investigation of a CO2 cooling system connected to Spawn-of-energy-plus thermal zones
(Peer reviewed; Journal article, 2022)Today, only about 25 % of the European building stock is considered energy efficient. Meanwhile, the implementation of CO2 as a refrigerant is considered one of the solutions to improve the overall building’s energy ... -
Numerical investigation of a novel pattern for reducing residual stress in additive manufacturing
(Journal article; Peer reviewed, 2020)Deposition patterns can significantly affect residual stress distribution in additive manufacturing processes. In this paper, a novel deposition pattern, the S-pattern, is proposed for the additive manufacturing process. ... -
Numerical investigation of a Pelton turbine at several operating conditions
(Peer reviewed; Journal article, 2022)The use of Computational Fluid Dynamics (CFD) for predicting the flow behaviour in Pelton turbines is limited by the complex nature of the flow, interaction between the jets and interference of the water after the impact ... -
Numerical investigation of an ammonia-water absorption-compression high-temperature heat pump for hot water and steam production in food processing
(Chapter, 2023)To achieve climate neutrality in the food sector, there is an urgent need for eco-friendly steam boilers. The absorption-compression heat pumps (ACHP) using an ammonia-water mixture as working fluid can provide a high heat ... -
Numerical investigation of an oil-free liquid-injected screw compressor with ammonia-water as refrigerant for high temperature heat pump applications
(Peer reviewed; Journal article, 2022)This study investigates a numerical model of an oil-free twin screw compressor with an ammonia-water mixture as refrigerant and liquid injection. The compressor was identified as the main constraint to increase the heat ... -
Numerical investigation of blade roughness impact on the aerodynamic performance and wake behavior of horizontal axis wind turbine
(Peer reviewed; Journal article, 2023)This research focuses on the effect of leading-edge erosion on the performance of wind turbines, specifically the GE1.5XLE horizontal axis wind turbine. The blade element momentum (BEM) method is used to predict the ...