@article {335, title = {The effect of turbulence on the conversion of coal under blast furnace raceway conditions}, journal = {Fuel}, volume = {331}, year = {2023}, month = {Jan-01-2023}, pages = {125840}, issn = {00162361}, doi = {10.1016/j.fuel.2022.125840}, url = {https://doi.org/10.1016/j.fuel.2022.125840}, author = {Wartha, Eva-Maria and Haugen, Nils Erland and Karchniwy, Ewa and B{\"o}senhofer, Markus and Harasek, Michael and L{\o}v{\r a}s, Terese} } @article {363, title = {Influence of Raceway Shape on Species Concentration}, journal = {Iron \& Steel Technology}, volume = {20}, year = {2023}, month = {Aug-07-2024}, issn = {15470423}, doi = {10.33313/TR/0823}, url = {https://imis.aist.org/store/detail.aspx?id=PR-TN0823-1}, author = {B{\"o}senhofer, Markus and Wartha, Eva-Maria and Hauzenberger, Franz and Stocker, Hugo and Feilmayr, Christoph and Harasek, Michael} } @article {317, title = {Enhanced kinetic model identification for gas{\textendash}solid reactions through Computational Fluid Dynamics}, journal = {Chemical Engineering Journal}, volume = {430}, year = {2022}, month = {Jan-02-2022}, pages = {132850}, issn = {13858947}, doi = {10.1016/j.cej.2021.132850}, url = {https://doi.org/10.1016/j.cej.2021.132850}, author = {Wartha, Eva-Maria and Birkelbach, Felix and B{\"o}senhofer, Markus and Harasek, Michael} } @article {312, title = {Importance of considering interstitial fluid effects in the kinetic theory of granular flow for raceway formation prediction}, journal = {Chemical Engineering Science}, volume = {247}, year = {2022}, month = {Jan-01-2022}, pages = {117026}, issn = {00092509}, doi = {10.1016/j.ces.2021.117026}, url = {https://doi.org/10.1016/j.ces.2021.117026}, author = {Wartha, Eva-Maria and B{\"o}senhofer, Markus and Harasek, Michael} } @conference {333, title = {Influence of Raceway Shape on Species Concentration}, booktitle = {AISTech 2022 Proceedings of the Iron and Steel Technology ConferenceAISTech 2022 Proceedings of the Iron and Steel Technology Conference}, year = {2022}, publisher = {AIST}, organization = {AIST}, doi = {10.33313/38610.33313/386/023}, url = {http://digital.library.aist.org/pages/http://digital.library.aist.org/pages/PR-386-023.htm}, author = {Wartha, E. and B{\"o}senhofer, M. and Hauzenberger, F. and Stocker, H. and Feilmayr, C. and Harasek, M.} } @proceedings {321, title = {Artificial Neural Networks to Substitute the ODE Solver in Reactive Flow Simulations}, year = {2021}, month = {04/2021}, pages = {266-271}, author = {Wartha, EM and Cabrerea Ormaza, MD and B{\"o}senhofer, M and Harasek, M} } @article {302, title = {Design and Simulation of Gas Burner Ejectors}, journal = {Carbon Resources Conversion}, year = {2021}, month = {Jan-01-2021}, issn = {25889133}, doi = {10.1016/j.crcon.2021.01.006}, url = {10.1016/j.crcon.2021.01.006}, author = {Pichler, Mario and Wesenauer, Florian and Jordan, Christian and Puskas, Stefan and Streibl, Bernhard and Winter, Franz and Harasek, Michael} } @conference {325, title = {A generic Euler-Euler multi-phase chemistry framework for OpenFOAM{\textregistered}}, booktitle = {18th Multiphase Flow Conference and Short Course: Simulation, Experiment and Application}, year = {2021}, month = {11/2021}, abstract = {

Multi-phase reactive flows are an immanent aspect of chemical engineering applications, e.g. solid fuel conversion, thermo-chemical energy storage, or heterogeneous catalysis. In recent years, applying computational methods for process optimization or intensification has become more popular. Computational Fluid Dynamics (CFD) provides a spatially resolved, steady-state or transient method to investigate complex processes. Flow, temperature, species profiles, and homogeneous chemistry are readily available in common CFD codes. Contrary, heterogeneous chemistry is typically only available in the Eulerian-Lagrangian (EL) modeling approach, while Euler-Euler (EE) implementations of heterogeneous chemistry are hardly available. Despite ever-increasing computational resources, modeling large- or industry-scale aggregates in the EL framework by e.g. CFD-DEM is still prohibitive. As a consequence, EE two-phase or multi-phase models are often employed to reduce the computational effort of granular phases by modeling their rheology with the Kinetic Theory of Granular Flows (KTGF). Providing a generic framework to include heterogeneous chemistry in the EE framework seems crucial to improve the application of CFD in industry-scale process development, optimization, or intensification. In this work, we present our implementation of such a multi-phase chemistry framework in the open-source CFD toolbox OpenFOAM{\textregistered}. The novel framework integrates seamlessly into the stock OpenFOAM{\textregistered} multiphaseEulerFoam solver and provides heterogeneous chemistry models of different complexity. The currently implemented heterogeneous chemistry models focus on gas-solid reactivity and range from detailed chemistry based on the SurfaceCHEMKIN formalism to effective rate approximations. A thorough introduction and discussion of the generic EE multi-phase chemistry framework are followed by an overview of the currently available gas-solid chemistry models. In the last part, we highlight the capabilities of the novel framework by presenting selected reactive multi-phase processes.

}, author = {Markus B{\"o}senhofer and Eva-Maria Wartha and Matthias Kiss and Michael Harasek} } @conference {313, title = {The Influence of Coke Reactivity on the Raceway Size {\textemdash} A Case Study}, booktitle = {AISTech 2021AISTech 2021 Proceedings of the Iron and Steel Technology Conference}, year = {2021}, publisher = {AIST}, organization = {AIST}, doi = {10.33313/38210.33313/382/252-83212-040}, url = {http://digital.library.aist.org/pages/PR-382http://digital.library.aist.org/pages/PR-382-152.htm}, author = {B{\"o}senhofer, M. and Wartha, E. and Hauzenberger, F. and Feilmayr, C. and Stocker, H. and Rieger, J. and Schatzl, M. and Harasek, M.} } @article {297, title = {Solubility Data of Potential Salts in the MgO-CaO-SO2-H2O-O2 System for Process Modeling}, journal = {Processes}, volume = {9}, year = {2021}, month = {Jan-01-2021}, pages = {50}, doi = {10.3390/pr9010050}, url = {https://www.mdpi.com/2227-9717/9/1/50https://www.mdpi.com/2227-9717/9/1/50/pdf}, author = {Wei{\ss}, Barbara D. and Harasek, Michael} } @article {274, title = {Characteristic Chemical Time Scales for Reactive Flow Modeling}, journal = {Combustion Science and Technology}, year = {2020}, pages = {1-26}, doi = {10.1080/00102202.2020.1760257}, url = {https://doi.org/10.1080/00102202.2020.1760257}, author = {Eva-Maria Wartha and Markus B{\"o}senhofer and Michael Harasek} } @conference {300, title = {Combining an implicit solution with an explicit corrector step for the solution of the continuity equations in a two-fluid solver}, booktitle = {14th International Conference on CFD in 6 Oil \& Gas, Metallurgical and Process Industries SINTEF, Trondheim, Norway, October 12{\textendash}14, 2020}, year = {2020}, publisher = {SINTEF Academic Press}, organization = {SINTEF Academic Press}, address = {Trondheim, Norway}, url = {https://hdl.handle.net/11250/2720854}, author = {Wartha, Eva-Maria and B{\"o}senhofer, Markus and Harasek, Michael} } @conference {303, title = {Considering Reactions in Design and Simulation of Ejectors}, booktitle = {Proceedings of the 16. Minisymposium Verfahrenstechnik \& 7. Partikelforum}, year = {2020}, isbn = {978-3-903337-01-5}, author = {Pichler, Mario and Wesenauer, Florian and Jordan, Christian and Puskas, Stefan and Streibl, Bernhard and Winter, Franz and Harasek, Michael}, editor = {Jordan, Christian} } @booklet {289, title = {Phase III: CFD Simulation Kalzinator}, year = {2020}, author = {Pichler, Mario and Haddadi, Bahram and Jordan, Christian and Wesenauer, Florian and Winter, Franz and Harasek, Michael} } @conference {281, title = {Pulverized Coal Conversion in Blast Furnaces {\textemdash} Analysis of Involved Scales}, booktitle = {AISTech2020 Proceedings of the Iron and Steel Technology Conference}, year = {2020}, publisher = {AIST}, organization = {AIST}, doi = {10.33313/38010.33313/380/032}, url = {http://digital.library.aist.org/pages/PR-380http://digital.library.aist.org/pages/PR-380-032.htm}, author = {B{\"o}senhofer, M. and Wartha, E. and Jordan, C. and Hauzenberger, F. and Feilmayr, C. and Stocker, H. and Rieger, J. and K{\"o}nig, B. and Harasek, M.} } @booklet {288, title = {Zwischenbericht 1 Projekt TOREtech}, year = {2020}, author = {Puskas, Stefan and Jordan, Christian and Pichler, Mario and Wesenauer, Florian and Streibl, Bernhard and Winter, Franz and Harasek, Michael} } @booklet {287, title = {Zwischenbericht 2 Projekt TOREtech}, year = {2020}, author = {Puskas, Stefan and Jordan, Christian and Pichler, Mario and Wesenauer, Florian and Streibl, Bernhard and Winter, Franz and Harasek, Michael} } @conference {249, title = {Mesh Partitioning of Reactive Flow Simulations {\textendash} Speed-up and Other Side Effects}, booktitle = {9th European Combustion Meeting}, year = {2019}, month = {04/2019}, address = {Lisbon, Portugal}, author = {Wartha, E.-M. and B{\"o}senhofer, M. and Jordan, C. and Harasek, M.} } @conference {250, title = {Multi-Phase Reactive Systems {\textendash} Analysis of Involved Time Scales}, booktitle = {9th European Combustion Meeting}, year = {2019}, month = {04/2019}, address = {Lisbon, Portugal}, author = {M. B{\"o}senhofer and Wartha, E.-M. and Jordan, C. and K{\"o}nig, B. and Harasek, M.} } @conference {291, title = {New Method for Numerical Calibration of a Rotary Kiln Model - A Multiscale Approach}, booktitle = {Abstracts}, year = {2019}, author = {Jordan, Christian and Pichler, Mario and Haddadi, Bahram and Norouzi, Hamid R. and Wesenauer, Florian and Weber, Jakob and Winter, Franz and Harasek, Michael} } @conference {254, title = {Pore-forming additives in brick production and their behaviour in the burning process - first results of an ongoing investigation}, booktitle = {15th Minisymposium Verfahrenstechnik}, year = {2019}, month = {04/2019}, address = {Leoben, Austria}, author = {F. Wesenauer and C. Jordan and F. Birkelbach and M. Pichler and M. Harasek and F. Winter} } @conference {252, title = {A Raceway Model Based on Open-Source Software}, booktitle = {AISTech 2019}, year = {2019}, month = {05/2019}, address = {Pittsburgh, PA, USA}, doi = {10.1000/377.272}, author = {B{\"o}senhofer, Markus and Wartha, Eva-Maria and Jordan, Christian and Harasek, Michael and Feilmayr, Christoph and Hauzenberger, Franz and K{\"o}nig, Bernhard} } @conference {256, title = {A simple calcination model - implementation and validation in OpenFOAM}, booktitle = {15th Minisymposium Verfahrenstechnik}, year = {2019}, month = {04/2019}, address = {Leoben, Austria}, author = {M. Pichler and B. Haddadi and C. Jordan and M. Haraseka and F. Wesenauer and F. Winter} } @article {248, title = {Suitability of pulverised coal testing facilities for blast furnace applications}, journal = {Ironmaking \& Steelmaking}, year = {2019}, month = {Aug-01-2020}, pages = {1 - 12}, issn = {0301-9233}, doi = {10.1080/03019233.2019.1565152}, url = {https://www.tandfonline.com/doi/full/10.1080/03019233.2019.1565152}, author = {B{\"o}senhofer, Markus and Wartha, Eva-Maria and Jordan, Christian and Feilmayr, Christoph and Stocker, Hugo and Hauzenberger, Franz and Rieger, Johannes and Tjaden, Stefan and Walk, Arleen and Harasek, Michael} } @conference {225, title = {Characterization of Gas Phase Reaction Regime in the Raceway Zone}, booktitle = {AISTech 2018 Proceedings}, year = {2018}, address = {Philadelphia, PA, USA}, author = {B{\"o}senhofer, Markus and Wartha, Eva-Maria and Jordan, Christian and Harasek, Michael and Feilmayr, Christoph and Hauzenberger, Franz} } @inbook {215, title = {Computational Improvements for the Eddy Dissipation Concept by Operator Splitting and Tabulation}, booktitle = {Proceedings of the 28th European Symposium on Computer Aided Process Engineering}, volume = {43}, number = {2010}, year = {2018}, pages = {1687{\textendash}1692}, abstract = {

The Eddy Dissipation Concept (EDC) is a well working concept for turbulent reacting flows, which depicts the influence of chemical reactions as well as turbulence. The problem when using detailed chemical mechanisms - necessary for more information about radical species and pollutants - is the vastly increased computational demand. Operator splitting and in situ adaptive tabulation (ISAT) can be a way to reduce the computational effort and improve the application of detailed chemical mechanisms with the EDC. Two operator splitting mechanisms are presented and used for the simulation of Sandia Flame D. The computational time can be decreased and the results fit well to the experimental results.

}, keywords = {Eddy Dissipation Concept (EDC), in situ adaptive tabulation (ISAT), OpenFOAM, operator splitting, turbulent combustion}, isbn = {9780444642356}, issn = {15707946}, doi = {10.1016/B978-0-444-64235-6.50294-1}, author = {Wartha, Eva-Maria and B{\"o}senhofer, Markus and Harasek, Michael} } @article {216, title = {The Eddy Dissipation Concept{\textemdash}Analysis of Different Fine Structure Treatments for Classical Combustion}, journal = {Energies}, volume = {11}, year = {2018}, abstract = {

The Eddy Dissipation Concept (EDC) is common in modeling turbulent combustion. Several model improvements have been proposed in literature; recent modifications aim to extend its validity to Moderate or Intense Low oxygen Dilution (MILD) conditions. In general, the EDC divides a fluid into a reacting and a non-reacting part. The reacting part is modeled as perfectly stirred reactor (PSR) or plug flow reactor (PFR). EDC theory suggests PSR treatment, while PFR treatment provides numerical advantages. Literature lacks a thorough evaluation of the consequences of employing the PFR fine structure treatment. Therefore, these consequences were evaluated by employing tests to isolate the effects of the EDC variations and fine structure treatment and by conducting a Sandia Flame D modeling study. Species concentration as well as EDC species consumption/production rates were evaluated. The isolated tests revealed an influence of the EDC improvements on the EDC rates, which is prominent at low shares of the reacting fluid. In contrast, PSR and PFR differences increase at large fine fraction shares. The modeling study revealed significant differences in the EDC rates of intermediate species. Summarizing, the PFR fine structure treatment might be chosen for schematic investigations, but for detailed investigations a careful evaluation is necessary.

}, issn = {1996-1073}, doi = {10.3390/en11071902}, url = {http://www.mdpi.com/1996-1073/11/7/1902}, author = {B{\"o}senhofer, Markus and Wartha, Eva-Maria and Jordan, Christian and Harasek, Michael} } @conference {219, title = {Intravascular Membrane Catehter for CO2 Reduction: In Vitro Tests and First Results}, booktitle = {8th World Congress of Biomechanics, WCB 2018}, year = {2018}, address = {Dublin, Ireland}, author = {Janeczek, Christoph and Karabegovic, Alen and Huber-Dangl, Florentine and Harasek, Michael and Lukitsch, Benjamin and Krenn, Claus G. and Ullrich, Roman and Willinger, Reinhard and Gf{\"o}hler, Margit} } @conference {224, title = {Pulverized Coal Injection (PCI) Test Facilities and Methods - Overview and Recommendations}, booktitle = {AISTech 2018 Proceedings}, year = {2018}, address = {Philadelphia, PA, USA}, author = {B{\"o}senhofer, Markus and Jordan, Christian and Harasek, Michael and Feilmayr, Christoph and Hauzenberger, Franz and Walk, Arleen and Tjaden, Stefan} } @unpublished {229, title = {TUW-IVT and K1-MET - Cooperation Highlights}, number = {1}, year = {2018}, author = {Harasek, Michael and B{\"o}senhofer, Markus and Wartha, Eva-Maria and Jordan, Christian} } @unpublished {208, title = {CFD @ TU Wien}, year = {2017}, author = {Harasek, Michael and Haddadi, Bahram and Jordan, Christian and Harsfalvi, Zsolt and B{\"o}senhofer, Markus and Lukitsch, Benjamin and Wartha, Eva-Maria and Ecker, Paul and Pichler, Mario} } @conference {222, title = {Experimental study of fouling issues in a biomass pellet driven Stirling engine}, booktitle = {5. Central European Biomass Conference}, year = {2017}, address = {Graz, Austria}, isbn = {978-3-9504380-1-7}, author = {Mair, Christine and Riepl, Rosemarie and Aigenbauer, Stefan and H{\"o}ftberger, Ernst and Weissinger, Alexander and Schmidl, Christoph and Haslinger, Walter and Jordan, Christian and Harasek, Michael} } @mastersthesis {207, title = {A Study on New Developments and Chemical Time Scale Definitions for the Eddy Dissipation Concept}, year = {2017}, school = {Institut f{\"u}r Verfahrenstechnik, Umwelttechnik und Technische Biowissenschaften}, type = {masters}, author = {Wartha, Eva-Maria} } @article {136, title = {Collocation Method for the Modeling of Membrane Gas Permeation Systems}, journal = {International Journal of Nonlinear Sciences and Numerical Simulation}, volume = {15}, year = {2014}, pages = {307{\textendash}316}, doi = {10.1515/ijnsns-2013-0113}, author = {Feichtinger, Anna and Makaruk, Aleksander and Weinm{\"u}ller, Ewa and Friedl, Anton and Harasek, Michael} } @article {48, title = {Development of Agitation Systems in Biogas Plants : Investigation of Mixing Characteristics, Improvement of Energy Efficiency and Scale-up using CFD}, journal = {Chemical Engineering Transactions}, volume = {21}, year = {2010}, pages = {1195{\textendash}1200}, doi = {10.3303/CET1021200}, author = {Maier, Christian and Weichselbaum, Wolfgang and Schlerka, Martin and Harasek, Michael} } @conference {175, title = {Evaluation of the High Temperature Conversion of Plastic Particles after Injection into Blast Furnace Raceway Using CFD Simulations}, booktitle = {Prc.of AIChE Annual Meeting}, year = {2007}, author = {Harasek, Michael and Jordan, Christian and Winter, Franz and Aichinger, Georg and Feilmayr, Christian and Schuster, Stefan} } @article {141, title = {Exit Geometry Effects on the Fluidization on Fine Particles in CFB Reaktor: Analysis by Semi-Theoretical and CFD Modeling}, journal = {Chemie Ingenieur Technik}, volume = {6}, year = {2001}, pages = {628}, author = {Harasek, Michael and Schausberger, Paul and Jordan, Christian and Winter, Franz} }