Mark W. Hlawitschka

ORCID: 0000-0003-2580-1886
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About
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Research Areas
  • Fluid Dynamics and Mixing
  • Minerals Flotation and Separation Techniques
  • Fluid Dynamics and Heat Transfer
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Cyclone Separators and Fluid Dynamics
  • Heat Transfer and Boiling Studies
  • Metallurgical Processes and Thermodynamics
  • Extraction and Separation Processes
  • Advancements in Battery Materials
  • Process Optimization and Integration
  • Reservoir Engineering and Simulation Methods
  • Computer Graphics and Visualization Techniques
  • Petroleum Processing and Analysis
  • Enhanced Oil Recovery Techniques
  • Lattice Boltzmann Simulation Studies
  • Advanced Neuroimaging Techniques and Applications
  • Electrohydrodynamics and Fluid Dynamics
  • Recycling and Waste Management Techniques
  • Topological and Geometric Data Analysis
  • Fluid Dynamics Simulations and Interactions
  • Aerosol Filtration and Electrostatic Precipitation
  • Membrane Separation Technologies
  • nanoparticles nucleation surface interactions
  • Coagulation and Flocculation Studies
  • Solar-Powered Water Purification Methods

Johannes Kepler University of Linz
2021-2025

University of Kaiserslautern
2010-2020

Daimler (Germany)
2009-2020

Linz Center of Mechatronics (Austria)
2020

Leipzig University of Applied Sciences
2016

Leipzig University
2006-2013

University of California, Davis
2010-2012

Schrodinger (United States)
2012

Al-Balqa Applied University
2010-2011

Abstract This paper presents the state of art in area topology‐based visualization. It describes process and results an extensive annotation for generating a definition terminology field. The enabled typology topological models which is used to organize research art. Our report discusses relations among each model computation, simplification, visualization, application. identifies themes common subfields, current frontiers, unexplored territory this area.

10.1111/cgf.12933 article EN Computer Graphics Forum 2016-06-01

This study investigated the successful synthesis of functionalized algal biochar-clay composite (FBKC). Subsequently, sorption performance FBKC towards norfloxacin (NFX) antibiotic and crystal violet dye (CVD) from water was extensively assessed in both batch continuous flow systems. A series characterization techniques were carried out for utilized precursors, indicating that surface area increased thirty-fold with a well-developed pore structure compared to original precursors....

10.1016/j.biortech.2023.129593 article EN cc-by Bioresource Technology 2023-08-07

Abstract The Marangoni effect assumes significance in bubbly flows when temperature or concentration gradients exist the domain. This study investigated hydrodynamics of single bubbles under influence force induced by stratified fields dissolved sugar, providing a numerical framework for examining these phenomena. A laboratory-scale bubble column and high-speed imaging were utilized to analyze behavior. OpenFOAM-based geometric volume fluid solver was extended incorporating solutocapillary...

10.1007/s42757-023-0182-x article EN cc-by Experimental and Computational Multiphase Flow 2024-04-16

We consider the problem of extracting discrete two-dimensional vortices from a turbulent flow. In our approach we use reference model describing expected physics and geometry an idealized vortex. The allows us to derive novel correlation between size vortex its strength, measured as square strain minus vorticity. For detection in real models strength parameter locate potential cores, then measure similarity ideal analytical core for different thresholds. This provides metric how well is...

10.1109/tvcg.2011.162 article EN IEEE Transactions on Visualization and Computer Graphics 2011-11-04

In this work, a one-group reduced population balance model based on the one primary and secondary particle method (OPOSPM) developed recently by Attarakih et al. (In Proceedings of 19th European Symposium Computer Aided Process Engineering, ESCAPE-19, Cracow, Poland, June 14−17, 2009; Jezowski, J., Thullie, Eds.; Elsevier: New York, ISBN-13: 978-0-444-53433-0) is implemented in commercial computational fluid dynamics (CFD) package FLUENT 6.3 for solving equation combined CFD−population...

10.1021/ie901411e article EN Industrial & Engineering Chemistry Research 2010-02-23

Liquid–liquid extraction has proven to be an aid in biologics manufacturing for cell and component separation. Because distribution coefficients separation factors can appropriately adjusted via phase screening, especially aqueous two-phase systems, one stage is frequently feasible. For separation, systems have feasible efficient. The simple mixer–settler equipment type still not standard operations. Therefore, a scalable digital twin would of operator training, process design under the...

10.3390/pr11020553 article EN Processes 2023-02-10

In this study, in a three-phase reactor with rectangular cross-section, the effects of liquid circulation rates and solid particle concentration on gas holdup bubble size distribution (BSD) were investigated. Air, water, glass beads used as gas, liquid, phases, respectively. Different velocities different loads applied. The results demonstrate that increasing content from 0% to 6% can decrease by 50% (due increased slurry phase viscosity promotion coalescence). Also, rate showed weak effect...

10.3390/fluids10010014 article EN cc-by Fluids 2025-01-16

This study aims to contribute the optimization of bio-methanation in bubble columns, making it a more viable alternative stirred tank reactors. The primary challenge be addressed is enhancement mass transfer, which strongly depends on parameters such as size and gas hold-up. Various disperser designs were examined 0.14 mm diameter column, comparing their performance terms distribution results indicate that an optimized plate featuring porous structure outperformed other by maintaining high...

10.3390/fluids10020037 article EN cc-by Fluids 2025-01-31

Abstract We present analysis and visualization of flow data from a high‐resolution simulation the dynamical behavior global ocean. Of particular scientific interest are coherent vortical features called mesoscale eddies. first extract high‐vorticity using metric oceanography community Okubo‐Weiss parameter. then use new circularity criterion to differentiate eddies other non‐eddy like meanders in strong background currents. From these data, we generate visualizations showing...

10.1111/j.1467-8659.2011.01948.x article EN Computer Graphics Forum 2011-06-01

Abstract The efficiency of many chemical engineering applications depends on the surface/volume ratio dispersed phase. Knowledge this particle size distribution is a key factor for better process control. challenge measurements acquired by optical imaging techniques segmentation overlapping particles, especially in high phase fraction flows. In work, convolutional neural network trained to segment droplets images shadowgraphic approach. artificial and implemented into droplet algorithm....

10.1002/cite.201900099 article EN cc-by Chemie Ingenieur Technik 2019-09-02

Abstract Reactive bubble columns are omnipresent in the chemical industry. The layout of these is still limited by correlations and therefore improved simulation techniques required to describe complex hydrodynamics/reaction interaction. In this work, we focus on numerical experimental study viscosity influence motion reaction using an Euler-Lagrange framework with added oscillation model bring column base closer a predictive level. For comparison validation, data various water-glycerol...

10.1007/s42757-020-0072-4 article EN cc-by Experimental and Computational Multiphase Flow 2020-10-21

Tensors occur in many areas of science and engineering. Especially, they are used to describe charge, mass energy transport (i.e. electrical conductivity tensor, diffusion thermal conduction tensor resp.) If the locale pattern is complicated, usual second order representation not sufficient. So far, there no appropriate visualization methods for this case. We point out similarities symmetric higher tensors spherical harmonics. A harmonic improve glyphs. This paper unites definition...

10.1109/vis.2005.48 article EN 2006-01-05

Abstract Fluid dynamics of the single‐phase and two‐phase flow in a segment rotating disc contactor (RDC) liquid–liquid extraction column with 450 mm inner diameter were studied by performing computational fluid (CFD) simulations particle image velocimetry (PIV) measurements. The investigated to test predictivity CFD at industrial scale. Different turbulence models conjunction Eulerian approach applied simulations. turbulent characteristics analyzed PIV measurements validate An iso‐optical...

10.1002/aic.12249 article EN AIChE Journal 2010-03-20

Excess sulfuric acid which is needed for the leaching process of spent lithium-ion batteries commonly neutralized generating significant waste streams. This research aims to extract and recover using tri-n-octylamine as an extraction agent. 1-octanol, 2-ethylhexanol, tributyl phosphate are investigated synergetic extractants phase modifiers. An equilibrium study carried out on both, leachate. The constant stoichiometric coefficient overall reaction determined by slope analysis. enthalpy...

10.1016/j.seppur.2024.126965 article EN cc-by Separation and Purification Technology 2024-03-01
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