Browsing NTNU Open by Author "Sannan, Sigurd"
Now showing items 1-6 of 6
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A Dimensional-Decomposition Approach for Stochastic Scale-Resolving Simulations of Turbulent Reacting Flows
Grøvdal, Fredrik (Doctoral theses at NTNU;2018:399, Doctoral thesis, 2018)High-fidelity and reliable numerical design tools are main keys to the development of novel gas turbines for hydrogen-rich fuels. However, state-of-the-art simulation tools for the most part only give a bulk approximation ... -
A framework for mixing-reaction closure with the Linear Eddy Model
Weydahl, Torleif (Doktoravhandlinger ved NTNU, 1503-8181; 2010:53, Doctoral thesis, 2010)This thesis presents a novel framework for mixing-reaction closure build on the Linear Eddy Model by Kerstein (1991B). The development of the modeling concept has been motivated by the need for better predictive tools for ... -
A Parametric Study of LEM3D Based on Comparison with a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-Flow
Grøvdal, Fredrik; Sannan, Sigurd; Chen, Jyh-Yuan; Løvås, Terese (Journal article; Peer reviewed, 2019)A novel model, the hybrid RANS-LEM3D model, is applied to a lifted turbulent N 2 diluted hydrogen jet flame in a vitiated co-flow of hot products from lean H 2 /air combustion. In the present modeling approach, mean-flow ... -
Application of the Linear Eddy Model - A Study of Differential Diffusion in Turbulent Hydrogen-Rich Jets
Bjørdalsbakke, Nikolai Lid (Master thesis, 2018)Differential diffusion effects in turbulent reactive and non-reactive problems based on hydrogen-rich fuels are not yet fully investigated. Through use of a Fortran implementa-tion of the Linear Eddy Model (LEM) ... -
Dimensional Decomposition of Turbulent Reacting Flows
Grøvdal, Fredrik; Sannan, Sigurd; Meraner, Christoph; Li, Tian; Løvås, Terese (Peer reviewed; Journal article, 2020)A dimensional-decomposition approach, decomposing 3D into 3×1D for turbulent (reacting) flows are motivated, discussed and investigated. In the three-dimensional Linear Eddy Model (LEM3D), three orthogonally intersecting ... -
Three-dimensional Linear Eddy Modeling of a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-flow
Grøvdal, Fredrik; Sannan, Sigurd; Chen, Jyh-Yuan; Kerstein, Alan R; Løvås, Terese (Journal article; Peer reviewed, 2018)A new methodology for modeling and simulation of reactive flows is reported in which a 3D formulation of the Linear Eddy Model (LEM3D) is used as a post-processing tool for an initial RANS simulation. In this hybrid approach, ...