Blar i NTNU Open på forfatter "Kvarving, Arne Morten"
-
A Parallel Solution to Large Scale Hydropower Scheduling - By reducing the number of synchronization points in the Stochastic Dual Dynamic Programming (SDDP) Algorithm
Braaten, Hallvard (Master thesis, 2014)Stochastic dual dynamic programming (SDDP) has become a popular algorithm used in practical long-term scheduling of hydro power systems. The SDDP algorithm is significantly more computationally demanding than most ... -
Adaptive isogeometric finite element analysis of steady-state groundwater flow
Bekele, Yared Worku; Kvamsdal, Trond; Kvarving, Arne Morten; Nordal, Steinar (Journal article; Peer reviewed, 2015)Numerical challenges occur in the simulation of groundwater flow problems because of complex boundary conditions, varying material properties, presence of sources or sinks in the flow domain, or a combination of these. In ... -
Adaptive Isogeometric Methods for Boussinesq Problems
Abdulhaque, Abdullah (Doctoral theses at NTNU;2022:261, Doctoral thesis, 2022)Computational Fluid Dynamics (CFD) is the numerical study of fluid flow, heat transfer, turbulence modelling and several conservation laws. The fluids can be liquids, gases and even plasmas. There is a vast number of ... -
Bénard cells and pattern formation: A numerical investigation
Kvarving, Arne Morten (Doktoravhandlinger ved NTNU, 1503-8181; 2010:231, Doctoral thesis, 2010) -
Implementation and comparison of three isogeometric Navier–Stokes solvers applied to simulation of flow past a fixed 2D NACA0012 airfoil at high Reynolds number
Nordanger, Knut; Holdahl, Runar; Kvarving, Arne Morten; Rasheed, Adil; Kvamsdal, Trond (Journal article; Peer reviewed, 2015)Implementation of three different Navier–Stokes solvers in an isogeometric finite element framework is presented in this paper. The three solvers Chorin projection method and Coupled formulation , both with the Spalart–Allmaras ... -
Isogeometric analysis of THM coupled processes in ground freezing
Bekele, Yared Worku; Kyokawa, Hiroyuki; Kvarving, Arne Morten; Kvamsdal, Trond; Nordal, Steinar (Journal article; Peer reviewed, 2017)An isogeometric analysis (IGA) based numerical model is presented for simulation of thermo-hydro-mechanically (THM) coupled processes in ground freezing. The momentum, mass and energy conservation equations are derived ... -
Isogeometric methods for CFD and FSI-simulation of flow around turbine blades
van Opstal, Timo Matteo; Fonn, Eivind; Holdahl, Runar; Kvamsdal, Trond; Kvarving, Arne Morten; Mathisen, Kjell Magne; Nordanger, Knut; Okstad, Knut Morten; Rasheed, Adil; Tabib, Mandar (Journal article; Peer reviewed, 2015)Coupled fluid-structure interaction simulations of wind turbines have traditionally been considered computationally too expensive to carry out. However, more powerful computers and better solution techniques based on ... -
Isogeometrisk analyse av Boussinesq ligningene
Abdulhaque, Abdullah (Master thesis, 2016)In this master thesis, I have solved the Boussinesq equations with Isogeometric Analysis to study heat transfer coupled with air circulation. The Boussinesq equations consist of the Navier-Stokes equations and the ... -
Mixed Method for Isogeometric Analysis of Coupled Flow and Deformation in Poroelastic Media
Bekele, Yared Worku; Fonn, Eivind; Kvamsdal, Trond; Kvarving, Arne Morten; Nordal, Steinar (Peer reviewed; Journal article, 2022)Pressure oscillations at small time steps have been known to be an issue in poroelasticity simulations. A review of proposed approaches to overcome this problem is presented. Critical time steps are specified to alleviate ... -
Nested computational fluid dynamic modeling of mean turbulent quantities estimation in complex topography using AROME-SIMRA
Midjiyawa, Zakari; Venås, Jon Vegard; Kvamsdal, Trond; Kvarving, Arne Morten; Midtbø, Knut Helge; Rasheed, Adil (Journal article; Peer reviewed, 2023)This paper presents a validation of the AROME-SIMRA model, which is a nested computational fluid dynamics model that simulates both mesoscale and microscale phenomena. To validate the model, we analyzed 47 h of mean flow ... -
Numerical benchmarking of fluid–structure interaction: An isogeometric finite element approach
Nordanger, Knut; Rasheed, Adil; Okstad, Knut Morten; Kvarving, Arne Morten; Holdahl, Runar; Kvamsdal, Trond (Journal article; Peer reviewed, 2016)In this paper we describe and evaluate an isogeometric finite element program, IFEM-FSI, for doing coupled fluid–structure interaction simulations. We investigate the role played by employing higher polynomial orders and ... -
Simulation of airflow past a 2D NACA0015 airfoil using an isogeometric incompressible Navier-Stokes solver with the Spalart-Allmaras turbulence model
Nordanger, Knut; Holdahl, Runar; Kvamsdal, Trond; Kvarving, Arne Morten; Rasheed, Adil (Journal article; Peer reviewed, 2015)The work presented in this paper concerns the efforts of conducting a computational fluid dynamics (CFD) simulation of air flow past a fixed 2D NACA0015 airfoil at high Reynolds number (Re=2.5×106Re=2.5×106) using an ... -
Spline based Mesh Generator for high fidelity simulation of flow around turbine blades
Fonn, Eivind; Rasheed, Adil; Kvarving, Arne Morten; Kvamsdal, Trond (Journal article; Peer reviewed, 2015)Mesh generation involving complex geometries, such as wind turbine blades, is highly complicated. The problem is generally addressed using tetrahedral meshes, or hybrid meshes with hexahedral elements close to the body and ...