Group CFD-Modeling of High-Temperature Processes (CFD)

The tasks of the “CFD Modeling of High-Temperature Processes“ division focus on the modeling of high-temperature processes across the entire spectrum ranging from chemically reacting particles to the complete reactor. One key aspect is the development of models and strategies for the simulation of high-temperature reactors such as fixed-bed, fluidized-bed, and entrained-flow in metallurgy and chemical engineering. Fundamental research on subsystems is incorporated into the development of advanced sub-models. These sub-models are then integrated into reactor models for an improved simulation of reacting fluid-solid systems. Based on insights gained through such advanced modeling, optimization strategies can be developed for an accelerated adaption of existing technologies as well as for the development of new technologies.

R&D:

  • CFD Modeling of catalytic and non-catalytic reforming of natural gas
  • CFD Modeling of gasification processes (entrained-flow, fluidized-bed, slag-bed)
  • CFD Modeling of metallurgical processes (roasting, top submerged lance processes, blast furnaces, smelting furnaces)
  • Reduced-order modeling and multi-parameter process optimization for high-temperature conversion processes
  • Model-based development and data analysis of high-temperature experiments
  • CFD-based design and development of new test rigs and advanced optical measurement equipment
  • Studies on chemical reacting particles and sub-model development (heat and mass transfer, drying, pyrolysis, gasification, agglomeration, development of shape and pore structure, particle-particle interaction)
  • Heat and mass transfer in porous structures

Simulation tools:

  • ANSYS Fluent
  • ANSYS Chemkin-Pro
  • Cantera
  • In-house 1D flow solver for multiphase reacting systems
  • In-house 3D IBM solver for flows in complex geometries
  • modeFrontier
  • STAR-CCM+
  • EDEM
Current projects and references

    OptoVirT+

    • CFD-based optimization of HP-POX and ATR processes (internal and industry projects)
    • CFD-based flame diagnostics for singlephase and multiphase systems systems (OptoVirT+)
    • Models and tools for automated data evaluation of optical measurements (OptoVirT+)
    • Slag flow modeling and CFD-based development of new entrained-flow gasifiers (HotVeGas)
    • Modeling entrained-flow gasifiers (industry)
    • Improved CFD models for entrained-flow gasifiers based on in-situ process diagnostics (DFG/NSFC project)
    • High-resolved fluidized-bed modeling (ZIK Virtuhcon)
    • Modeling of fixed-bed gasifiers (ZIK Virtuhcon)
    • Particle-Resolved Modeling of reactive beds of non-spherical particles (ZIK Virtuhcon)
    • Modeling of top submerged lance processes (ZIK Virtuhcon)
    • Two-fluid modeling of reactive fluidized-bed systems (internal project)
    • Development of single-particle conversion models (Opticon)
    • Deposit modeling for furnaces (Korristent)
    • Particle structure change in high-temperature environments (scholarship)
    • Software Development for reactor optimization (internal project)
    • Numerical studies and design improvements of high-temperature experiments (internal project)
    • CFD-studies on blast furnaces (industry)
    • Modeling of flash smelting furnaces (Kooperation with Helmholtz Institute Freiberg for Resource Technology)

    Abteilung CFD

    Team

    Head of Department:

    Team members:


    Publications

    Complete list of publications (pdf)

    Recent Publications

    (limited to 10)

    Q. Guo, Y. Huang, Y. Gong, X. Zhuang, A. Richter, G. Yu. “Recover Carbon from Coal Gasification Fine Slag as Electrocatalyst for Oxygen Reduction Reaction and Zn-Air Batteries”. In: Journal of Cleaner Production (2020), submitted.

    S. Kriebitzsch, A. Richter. “LES simulation of char particle gasification at Reynolds numbers up to 1000”. In: Combustion and Flame 211 (2020), 185–194.

    C. B. Nguyen, J. Scherer, S. Kriebitzsch, A. Richter. “The Morphology Evolution of Char Particles during Conversion Processes”. In: International Journal of Heat and Mass Transfer (2020), submitted.

    C. B. Nguyen, J. Scherer, Q. Guo, S. Kriebitzsch, A. Richter. “The Shape Development of Spherical and Non-Spherical Char Particles in the Flame Zone of an Entrained-Flow Gasifier – A Numerical Study”. In: International Journal of Heat and Mass Transfer 149 (2020), 119220.

    D. Obiso, M. Akashi, S. Kriebitzsch, B. Meyer, M. Reuter, S. Eckert, A. Richter. “CFD Modeling and Experimental Validation of Top-Submerged-Lance Gas Injection in Liquid Metal”. In: Metallurgical and Materials Transactions B (2020), in press.

    D. Obiso, D. H. Schwitalla, I. Korobeinikov, B. Meyer, M. Reuter, A. Richter. “Dynamics of Rising Bubbles in a Quiescent Slag Bath with Varying Thermo-Physical Properties”. In: Metallurgical and Materials Transactions B (2020), in press.

    Y. Ran, A. Boden, A. Richter, S. Guhl, S. Nolte, R. Ackermann. “Nonresonant signal assisted high pressure multi-species gas concentration measurements using ultrabroadband CARS”. In: OSA Continuum (2020), in press.

    A. Bader, M. Hartwich, A. Richter, B. Meyer. “Numerical and experimental study of heavy oil gasification in an entrained-flow reactor and the impact of the burner concept”. In: Fuel Processing Technology 169 (2018), 58–70.

    F. Dierich, A. Richter, P. Nikrityuk. “A fixed-grid model to track the interface and porosity of a chemically reacting moving char particle”. In: Chemical Engineering Science 175 (2018), 296–305.

    P. Rößger, A. Richter. “Performance of different optimization concepts for reactive flow systems based on combined CFD and response surface methods”. In: Computers & Chemical Engineering 108 (2018), 232–239.