Sebastian Hube

M. Sc.

Research Associate

Sebastian Hube
Chair for Computational Analysis of Technical Systems


Building: Rogowski

Room: 221

Schinkelstr. 2

52062 Aachen


Phone: +49 241 80 99912
Fax Fax: +49 241 80 99910

About me

My research is focussed on shape optimization in mechanical engineering applications.
The main project aims at developing improved mixing elements for single-screw extrudes which help to homogeneize melts further. For this purpose we simulate isoltated parts of the extruder and optimize the mixing element's shape numerically by determining the mixing ability of each configuration.
Other fields of application are the integration of CAD and simulation, in which shape optimization methods are also being applied.
In addition, I supervise our volunteers of Bundesfreiwilligendienst together with Max Schuster.


  • 2016 M.Sc. Mechanical Engineering, RWTH Aachen University, Thesis: Investigation of Spline-based Die Swell Simulation in Polymer Extrusion and Application to an Industrially Relevant Die
  • 2014 B.Sc. Mechanical Engineering, RWTH Aachen University, Thesis: Modeling and Simulation of a Passenger Aircraft Door



  • Numerical optimization based on FE-fluid simulations
  • Simulation and shape optimization of mixing elements in single-screw extruders
  • Geometric parameterization of extruder screws for shape optimization


Simulation Methods in Mechanical Engineering

Completed Student Projects

P. Brokof, T. Schneider: Implementierung einer semidiskreten Advektions-Diffusions-Reaktions-Gleichung im generischen Softwareframework des in-house Finite-Elemente Strömungslösers XNS

J. Lee: Development and Implementation of Geometric Filters Using Neural Networks for
Optimization of the Distributive Mixing in Single-Screw Extruders and Application to
Shape Optimization of an Industrially Relevant Geometry

G. Boekholt: Model Order Reduction using the Finite Element Method for an Injection Molding Simulation

R. Pohlmann: Development and Implementation of an Efficient Method for Reverse Shape Design of Simulation-Based Shape Optimization

Student project offers


Journal Article

Boundary-conforming free-surface flow computations: Interface tracking for linear, higher-order and isogeometric finite elements
Published in: Computer methods in applied mechanics and engineering (2017)

Contribution to a conference proceedings

Shape Optimization in Polymer Extrusion Using Shear-Thinning Fluids
Published in: Proceedings of 8th GACM Colloquium on Computational Mechanics : For Young Scientists From Academia and Industry August 28th – 30th, 2019 University of Kassel, Germany / Herausgeber: Tobias Gleim, Stephan Lange (2019)
CFD-based optimization in plastics extrusion
Published in: Proceedings of the 21st International ESAFORM Conference on Material Forming : ESAFORM 2018 : Palermo, Italy, 23-25 April 2018 / editors: Livan Fratini, Rosa Di Lorenzo, Gianluca Buffa, Guiseppe Ingaro (University of Palermo, Palermo, Italy). - B (2018)
Extrusion und Weiterverarbeitung simulativ optimieren
Published in: Kunststoffindustrie 4.0 : 29. Internationales Kolloquium Kunststofftechnik / Herausgeber: Institut für Kunststoffverarbeitung (IKV) in Industrie und Handwerk an der RWTH Aachen, Lehrstuhl für Kunststoffverarbeitung, Prof. Dr.-Ing Christian Hopmann (2018)
Coupling free-surface flow and mesh deformation in an isogeometric setting
Published in: Coupled Problems in Science and Engineering VII - COUPLED PROBLEMS 2017 : proceedings of the VII International Conference on Coupled Problems in Science and Engineering, Rhodes Island, Greece, June 12-14, 2017 / edited by: Manolis Papadrakakis (Institute of Structural Analysis & Antiseismic Research, National Technical University of Athens, Greece), Eugenio Oñate (International Center for Numerical Methods in Engineering (CIMNE), Spain, Universitat Politècnica de Catalunya (UPC)), Bernhard A. Schrefler (Department of Civil, Environmental and Architectural Engineering, Università degli Studi di Padova, Italy) (2017)