Lorenzo Vianello M.Sc.
Simulation of film evaporation and formation of deposits (SFB/TRR 150)
Contact
vianello@ttd.tu-...
work +49 6151 16-20472
Work
L2|06 215
Peter-Grünberg-Str. 10
64287
Darmstadt
| Since 09/2023 | Researcher at the Institute for Technical Thermodynamics, Technical University of Darmstadt |
| 10/2022 – 08/2023 | HiRef SpA: Sales Engineer |
| 08/2022 – 10/2022 | Expert consultant in CFD simulations for Fluids and Thermal Engineering Research Group, University of Nottingham: |
| 10/2020 – 09/2021 | Research fellow for STET Research Group, University of Padua |
| 10/2017 – 10/2020 | M.Sc. Energy Engineering, University of Padua |
| 09/2014 – 09/2017 | B.Sc. Energy Engineering, University of Padua |
Project B01: Numerical investigation of multi-component film evaporation and the formation of deposits
Liquid fuels are known to form wall films inside an internal combustion engine under certain conditions. Highly volatile fuel components evaporate more quickly. The remaining components can create deposits on the wall through cross-linking or chemical reactions. These deposits impair the engine efficiency and increase the emission of pollutants. Deposits can also occur through evaporation in process engineering or in urea injection systems for exhaust gas treatment. The process sequence and the dependence on different parameters are unknown.
The objective of this work is to describe the evaporation process of multi-component systems on complex surfaces and the influence of deposits both theoretically and numerically. Flow-dynamics, heat and mass transfer in liquid films and drops, chemical reactions and the creation of deposits are considered.
In this project, various physical processes involved in evaporation of films and drops and deposit formation are considered separately from each other in a first step and investigated with appropriate methods. Asymptotic methods (Long-Wave-Theory) as well as numerical methods (Volume-of-Fluid Method and Arbitrary-Lagrangian-Eulerian-Method) are used.
Through the combination of the different models, it becomes possible to identify the influence of various parameters (such as temperature, turbulent flow, liquid composition) on evaporation and deposit formation. From this a better understanding of the process can be deduced.
Current objectives include the extension of the model for drop evaporation and deposit formation to engine conditions. Additionally, the various asymptotic models developed in the first funding period will be incorporated into one model for film evolution, evaporation, and chemical reactions. Lastly, parametric studies will be conducted to identify critical parameter ranges that lead to deposit formation.