Mechanical and Systems Engineering Prof. Dr.-Ing. Sandra Hartl

• Modelling and simulation of thermo-fluid dynamic processes (fluid mechanics)
• Laminar and turbulent reactive and non-reactive flows (including thermochemical oxidation, catalyst modelling)
• Experimentally based model development
• Sustainable energy systems/energy storage
• Heat and mass transfer
• Thermodynamics

by appointment

2006 - 2011: Dipl.-Math. (TU Chemnitz), Main area of study: Numerical mathematics

2011 - 2017: Research associate at the Chair of Numerical Thermofluid Dynamics (Freiberg University of Mining and Technology)

2017: Doctorate, Dr.-Ing. in Process Engineering (Freiberg University of Mining and Technology)

2018 - 2022: Postdoctoral research assoicate in im Department of Mechanical and Plastics Engineering (University of Applied Sciences Darmstadt) and at the Institute of Simulation of reactive Thermo-Fluid Systems (TU Darmstadt)

2021 - 2024: Umicore AG & Co. KG, Hanau focussing on Automotive Catalysts as development engineer

Peer-reviewed journals

Scale-bridging within a complex model hierarchy for investigation of a metal-fueled circular energy economy by use of Bayesian model calibration with model error quantification
Applied Energy 390, 2025
L. Gossel, E. Corbean, S. Dübal, P. Brand, M. Fricke, H. Nicolai, C. Hasse, S. Hartl, S. Ulbrich, D. Bothe

A chemical reactor network approach for a gas-assisted iron dust flame in a laboratory-scale combustor
Thermal Science and Engineering Progress 60, 2025
S. Dübal, P. Steffens, J. Mich, D. Braig, A. Vahl, L. L. Berkel, A. Scholtissek, T. Faravelli, C. Hasse, H. Nicolai, S. Hartl

Chemical reactor network modeling in the context of solid fuel combustion under oxy-fuel atmospheres
Fuel 364, 2024
S. Dübal, L.L. Berkel, P. Debiagi, H. Nicolai, T. Faravelli, C. Hasse, S. Hartl

Flame regimes in DI diesel combustion: LES study for light-and heavy-duty injectors
Combustion and Flame 252, 2023
S. Popp, S. Gierth, C. Hasse, S. Hartl, 

Cellular structures of laminar lean premixed H2/CH4/air polyhedral flames
Applications in Energy and Combustion Science 13, 2023
S. Shi, A. Breicher, J. Trabold, S. Hartl, R. S. Barlow, A. Dreizler, D. Geyer

Urea Conversion for Low‐Temperature Selective Catalytic Reduction in a Swirled Diesel Exhaust Gas Configuration
Chemical Engineering & Technology 45 (4), 2022, Pages 610-619
S. Gierth, S. Hartl, M. Pollack, C. Hasse, U. Hofmann, G. Zikoridse, H. Rautenberg, F. Will, C. Hahn, S. Kureti

Fuel effects in turbulent premixed pre-vaporised alcohol/air jet flames
Flow, Turbulence and Combustion 106 (2), Pahes 547-573, J. Trabold, S. Hartl, S. Walther, A. Johchi, A. Dreizler, D. Geyer

Characterization of multi-regime reaction zones in a piloted inhomogeneous jet flame with local extinction
Proceedings of the Combustion Institute 38, 2021, Pages 2571–2579
R.S. Barlow, S. Hartl, C. Hasse, H.C. Cutcher, A.R. Masri

Assessing multi-regime combustion in a novel burner configuration with large eddy simulations using tabulated chemistry
Proceedings of the Combustion Institute 38, 2021, Pages 2551–2558
S. Popp, S. Hartl, D. Butz, D. Geyer, A. Dreizler, L. Vervisch, C. Hasse

Flame structure analysis of turbulent premixed/stratified flames with H2 addition considering differential diffusion and stretch effects
Proceedings of the Combustion Institute 38, 2021, Pages 2993–3001
X. Wen, S. Hartl, A. Dreizler, J. Janicka, C. Hasse

Combustion regime identification from machine learning trained by Raman/Rayleigh line measurements
Combustion and Flame, Volume 219, 2020, Pages 268 – 274
K. Wan, S. Hartl, L. Vervisch, P. Domingo, R.S. Barlow, C. Hasse

Derivation and analysis of two-dimensional composition space equations for multi-regime combustion using orthogonal coordinates
Combustion and Flame, Volume 218, 2020, Pages 205 - 217 
A. Scholtissek, S. Popp, S. Hartl, H. Olguin, P. Domingo, L. Vervisch, C. Hasse

Fuel Effects in Turbulent Premixed Pre-vaporised Alcohol/Air Jet Flames
Flow, Turbulence and Combustion, 2020, Pages 1573-1987 
J. Trabold, S. Hartl, S. Walther, A. Johchi, A. Dreizler, D. Geyer

Numerical and experimental investigation of the laminar burning velocity of biofuels at atmospheric and high-pressure conditions
Fuel, Volume 247, 2019, Pages 250–256 
F. Rau, S. Hartl, C. Hasse

Assessing an experimental approach for chemical explosive mode and heat release rate using DNS data
Combustion and Flame, Volume 209, 2019, Pages 214–224
S. Hartl, D. Geyer, C. Hasse, X. Zhao, H. Wang, R. S. Barlow

Local flame structure analysis in turbulent CH4/air flames with multi-regime characteristics
Combustion and Flame, Volume 210, 2019, Pages 426–438
D. Butz, S. Hartl, S. Popp, S. Walther, R. Barlow, C. Hasse, A. Dreizler, D. Geyer

Assessing the relative importance of flame regimes in Raman/Rayleigh line measurements of turbulent lifted flames
Proceedings of the Combustion Institute, Volume 37, 2019, Pages 2297–2305
S. Hartl, R. Van Winkle, D. Geyer, A. Dreizler, G. Magnotti, C. Hasse, R. S. Barlow

Regime identification from Raman/Rayleigh line measurements in partially premixed flames
Combustion and Flame, Volume 189, 2018, Pages 126–141
S. Hartl, D. Geyer, A. Dreizler, G. Magnotti, R. S. Barlow, C. Hasse

Flame Structure Analysis and Flamelet/Progress Variable Modelling of DME/Air Flames with Different Degrees of Premixing
Flow, Turbulence and Combustion, Volume 102, Issue 3, Pages 757–773 
S. Hartl, D. Messig, F. Fuest, C. Hasse

Development of an Ethanol Combustion Mechanism Based on a Hierarchical Optimization Approach
International Journal of Chemical Kinetics, Volume 48, 2016, Pages 423–441
C. Olm, T. Varga, É. Valkó, S. Hartl, C. Hasse, T. Turányi

A Constrained Control Approach for the Automated Choice of an Optimal Progress Variable for Chemistry Tabulation
Flow, Turbulence and Combustion, Volume 94, 2015, Pages 593-617
U. Prüfert, S. Hartl, F. Hunger, D. Messig, M. Eiermann, C. Hasse

Flamelet/progress variable modeling of partial oxidation systems: From laboratory flames to pilot-scale reactors
Chemical Engineering Science, Volume 134, 2015, Pages 694-707
M. Vascellari, H. Xu, S. Hartl, F. Hunger, C. Hasse

LES flamelet-progress variable modeling and measurements of a turbulent partially-premixed dimethyl ether jet flame
Combustion and Flame, Volume 162, Issue 8, 2015, Pages 3016-3029
S. Popp, F. Hunger, S. Hartl, D. Messig, B. Coriton, J. H. Frank, F. Fuest, C. Hasse

Laminar burning velocity measurements using the Heat Flux method and numerical predictions of iso-octane/ethanol blends for different preheat temperatures
Fuel, Volume 140, 2015, Pages 10-16
F. Rau, S. Hartl, S. Voss, M. Still, C. Hasse, D. Trimis

Determination of laminar burning velocities for lean low calorific H2/N2 and H2/CO/N2 gas mixtures
International Journal of Hydrogen Energy, Volume 39, Issue 34, 20 November 2014, Pages 19810-19817
S. Voss, S. Hartl, C. Hasse

Dissertation

Flamelet/progress variable modelling and flame structure analysis of partially premixed flames 
Freiberg University of Mining and Technology 
S. Hartl

• Sustainable energy systems/energy storage (e.g. iron as  energy carrier for a climate-neutral circular economy)
  (Skare-Me: Downscaled modelling of metal oxidation for a climate-neutral energy supply, funded by the Carl Zeiss Foundation)
• Experimentally based model development
• Modelling and simulation of thermofluid-dynamic processes with a focus on transient thermodynamics, heat and mass transfer
• Digital twins for sustainable lime kilns: CFD-supported optimisation and system evaluation

Google Scholar

Research at IAS:

/en/research/projects/research-institutes-groups/institute-for-applied-computational-fluid-dynamics/research

Lehre im Studiengang:

• MBB (Modul Thermofluiddynamik 1 - Fluidmechanik 1, Modul Grundlagen Sustainable Engineering - Grundlagen LCA, Wahlpflichtmodul Technologiedemonstrator Windkraftanlage - CFD & Strömung der WKA)
• RMM (Modul Energieeffizienz - Nachhaltigkeit)
• DDM (Modul Design for Manufacturing - Product Life Cycle Management)