Blar i SINTEF Open på forfatter "Gruber, Andrea"
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Computation of three-dimensional three-phase flow of carbon dioxide using a high-order WENO scheme
Gjennestad, Magnus Aashammer; Gruber, Andrea; Lervåg, Karl Yngve; Johansen, Øyvind; Ervik, Åsmund; Hammer, Morten; Munkejord, Svend Tollak (Journal article; Peer reviewed, 2017)We have developed a high-order numerical method for the 3D simulation of viscous and inviscid multiphase flow described by a homogeneous equilibrium model and a general equation of state. Here we focus on single-phase, ... -
Curvature effects on NO formation in wrinkled laminar ammonia/hydrogen/nitrogen-air premixed flames
Netzer, Corinna; Ahmed, Ahfaz; Gruber, Andrea; Løvås, Terese (Peer reviewed; Journal article, 2021)The formation of nitrogen oxide (NO) in wrinkled laminar NH3/H2/N2-air premixed flames is investigated utilizing two-dimensional Direct Numerical Simulation (DNS) with detailed chemical kinetics as well as one-dimensional ... -
Development and validation study of a 1D analytical model for the response of reheat flames to entropy waves
Gant, Francesco; Gruber, Andrea; Bothien, Mirko R. (Peer reviewed; Journal article, 2020)Numerical simulations of laminar premixed flames burning hydrogen and methane in spontaneous ignition mode are performed by harmonically exciting the reactants’ temperature at the domain inlet. The results are compared to ... -
Direct numerical simulation of flame stabilization assisted by autoignition in a reheat gas turbine combustor
Aditya, Konduri; Gruber, Andrea; Xu, Chao; Lu, Tianfeng F.; Krisman, Alex; Bothien, Mirko R.; Chen, Jacqueline H. (Journal article; Peer reviewed, 2018)A three-dimensional direct numerical simulation (DNS) is performed for a turbulent hydrogen-air flame, represented with detailed chemistry, stabilized in a model gas-turbine combustor. The combustor geometry consists of a ... -
Direct Numerical Simulation of hydrogen combustion at auto-ignitive conditions: Ignition, stability and turbulent reaction-front velocity
Gruber, Andrea; Bothien, Mirko R.; Ciani, Andrea Camperio; Aditya, Konduri; Chen, Jacqueline H.; Williams, Forman Arthur (Peer reviewed; Journal article, 2021)Direct Numerical Simulations (DNS) are performed to investigate the process of spontaneous ignition of hydrogen flames at laminar, turbulent, adiabatic and non-adiabatic conditions. Mixtures of hydrogen and vitiated air ... -
Direct numerical simulations of premixed and stratified flame propagation in turbulent channel flow
Gruber, Andrea; Richardson, Edward S.; Aditya, Konduri; Chen, Jacqueline H. (Journal article; Peer reviewed, 2018) -
The effect of pressure on lean premixed hydrogen-air flames
Rieth, Martin; Gruber, Andrea; Chen, Jacqueline H. (Peer reviewed; Journal article, 2023)The effect of pressure on the propagation of lean premixed hydrogen-air flames is investigated numerically with a hierarchy of canonical configurations including direct numerical simulations of turbulent flames in homogeneous ... -
GHGT-12 Performance of the IGCC with distributed feeding of H2 in the gas turbine burner
Jordal, Kristin; Anantharaman, Rahul; Gruber, Andrea; Peters, Thijs; Henriksen, Partow Pakdel; Berstad, David Olsson; Bredesen, Rune (Peer reviewed; Journal article, 2014)A main hurdle for realizing the IGCC with CO2 capture is the lack of gas turbines capable of burning hydrogen in an environmental-friendly, yet energy-efficient manner. With currently proposed combustion schemes an efficiency ... -
Materials challenges in hydrogen-fuelled gas turbines
Stefan, Elena; Talic, Belma; Larring, Yngve; Gruber, Andrea; Peters, Thijs (Peer reviewed; Journal article, 2021)With the increased pressure to decarbonise the power generation sector several gas turbine manufacturers are working towards increasing the hydrogen-firing capabilities of their engines towards 100%. In this review, we ... -
Premixed hydrogen-air flames interacting with a hydrogen porous wall
Salimath, Prashant Siddlinggayya; Ertesvåg, Ivar Ståle; Gruber, Andrea (Journal article; Peer reviewed, 2018)A laminar one-dimensional hydrogen-air flame travelling and quenching towards a chemically inert permeable wall (PW) is studied. Hydrogen flows through the wall into the premixed H2-air. The S3D numerical code with detailed ... -
A skeletal mechanism for prediction of ignition delay times and laminar premixed flame velocities of hydrogen-methane mixtures under gas turbine conditions
Jiang, Yuanjie; del Alamo Serrano, Gonzalo; Gruber, Andrea; Bothien, Mirko R.; Seshadri, Kalyanasundaram; Williams, Forman Arthur (Peer reviewed; Journal article, 2019)The aim of this study is to eliminate unimportant steps from a detailed chemical-kinetic mechanism in order to identify a skeletal kinetic mechanism that can predict with sufficient accuracy ignition delay times and laminar ... -
Study of flame-flow interactions in turbulent boundary layer premixed flame flashback over a flat plate using direct numerical simulation
Chen, Guo; Wang, Haiou; Gruber, Andrea; Luo, Kun; Fan, Jianren (Peer reviewed; Journal article, 2023)Lean hydrogen/air premixed flame flashback in a turbulent boundary layer over a flat plate is investigated using three-dimensional direct numerical simulation with detailed chemical kinetics. The upstream propagation of ... -
An updated short chemical-kinetic nitrogen mechanism for carbon-free combustion applications
Jiang, Yuanjie; Gruber, Andrea; Seshadri, Kalyanasundaram; Williams, Forman (Peer reviewed; Journal article, 2019)Chemical‐kinetic combustion mechanisms for hydrogen‐oxygen‐nitrogen systems, motivated originally by concerns about NOx emissions during hydrogen burning, have recently acquired renewed interest as a result of the possibility ...