Dr. Leo Dostal


Dr. Leo Dostal

Leo Dostal

Kontakt

Anschrift
Technische Universität Hamburg
Mechanik und Meerestechnik
Eißendorfer Straße 42 (M)
21073 Hamburg
Büro
Gebäude M
Raum 0518
Telefon
+49 40 428 78 22 09
Fax
+49 40 428 78 20 28

Research Interests

  • Fluid Dynamics and Fluid-Structure Interaction
  • Stochastic and Partial Differential Equations
  • Stochastic Averaging
  • Nonlinear Filtering
  • Optimization and Optimal Control

Publications

legend:  black = published;  orange = submitted;  green = accepted

  • Dostal, L., Kreuzer, E.: Analytical and Semi-Analytical Solutions of Some Fundamental Nonlinear Stochastic Differential Equations. In: Proc. IUTAM 19 (2016), 178-186
  • Dostal, L., Kreuzer, E. (2014): Assessment of Extreme Rolling of Ships in Random Seas. In: 33th International Conference on Ocean, Offshore and Arctic Engineering OMAE 2014 (San Francisco, USA, June 8-13, 2014)
  • Dostal, L., Kreuzer, E. (2014): Error estimation and error evolution of the Local Statistical Linearization method. In: Proceedings of the 8th European Nonlinear Oscillations Conference (Viena, Austria, July 6-11, 2014)
  • Dostal, L., Kreuzer, E.: Surf-Riding Threshold of Ships in Random Seas. In: PAMM-Proc. in Appl. Math. Mech. (2013)
  • Dostal, L., Kreuzer, E. (2013): Non-stationary probability of parametric roll of ships in random seas. In: V International Conference on Computational Methods in Marine Engineering MARINE 2013 (Hamburg, Germany, May 29-31, 2013)
  • Dostal, L., Kreuzer, E., Namachchivaya, N. S. (2013): Stochastic averaging of roll-pitch and roll-heave motion in random seas. In: IUTAM Symposium on Multiscale Problems in Stochastic Mechanics (Karlsruhe, Germany, June 25-28, 2012)
  • Dostal, L., Kreuzer, E., Sri Namachchivaya, N.: Non-standard Stochastic Averaging of Large Amplitude Ship Rolling in Random Seas. In: Proc. R. Soc. A 468 (2012), No. 2148, 4146–4173
  • Dostal, L., Kreuzer, E.: Almost Sure Stability Analysis of Parametric Roll in Random Seas Based on Top Lyapunov Exponent. In: PAMM-Proc. in Appl. Math. Mech. (2012)
  • Dostal, L., Kreuzer, E.: Probabilistic approach to large amplitude ship rolling in random seas. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 225 (2011), No. 10, 2464-2476
  • Dostal, L., Kreuzer, E.; Namachchivaya, N. S. (2011): Ship Capsizing Analysis in Random Seas Using Non-standard Stochastic Averaging. In: Proceedings of the 7th European Nonlinear Oscillations Conference (Rom, Italy, July 24-29, 2011)
  • Dostal, L., Kreuzer, E.: Analysis of Nonlinear Stochastic Ship Dynamics under Extended Wave Modeling. In: PAMM-Proc. in Appl. Math. Mech. (2010)
  • Dostal, L., Kreuzer, E.: Numerical Computation of Parametric Induced Roll Motions in Random Seas. In: PAMM-Proc. in Appl. Math. Mech. (2009)

Invited talks

  • April 2014: “Nonlinear Stochastic Dynamics of Ships in Random Seas” and “Optimal Control of Flight Trajectories”, Universidade Federal do Rio Grande do Norte, Brazil
  • September 2012: “Sea state modeling and parameter identification from measured ship response”, Workshop on Dynamical Systems, University of Illinois at Urbana-Champaign, USA
  • April 2011: “Non-standard Stochastic Averaging”, Nonlinear Systems Group Seminar, University of Illinois at Urbana-Champaign, USA
  • June 2010: “Analysis of Nonlinear Stochastic Ship Dynamics using Stochastic Averaging”, Humboldt-Universität zu Berlin, Germany

Presentations

  • January 2016: 17th DNV GL Workshop "Development of New Probabilistic Stability Criteria for Intact Ships in Random Seas", Hamburg, Germany
  • July 2015: IUTAM Symposium Analytical Methods in Nonlinear Dynamics, Frankfurt, Germany, "Analytical and semi-analytical solutions of some fundamental nonlinear stochastic differential equations"
  • May 2015: SIAM Conference on Applications of Dynamical Systems, Snowbird, USA, "Error assessment of the local statistical linearization method"
  • July 2014: 8th European Nonlinear Dynamics Conference, Vienna, Austria, "Error estimation and error evolution of the local statistical linearization method"
  • June 2014: 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), San Francisco, USA, "Assessment of extreme rolling of ships in random seas"
  • October 2013: 5th GACM Colloquium on Computational Mechanics, Hamburg, Germany, "Roll dynamics of ships in random seas"
  • May 2013: 5th Int. Conf. on Computational Methods in Marine Engineering, Hamburg, Germany, "Non-stationary probability of parametric roll of ships in random seas"
  • March 2013: GAMM Annual Meeting 2012, Novi Sad, Serbia, "Surf-riding threshold of ships in random seas"
  • June 2012: IUTAM Symposium on Multiscale Problems in Stochastic Mechanics, Karlsruhe, Germany, "Stochastic averaging of roll-pitch and roll-heave motion in random seas"
  • March 2012: GAMM Annual Meeting 2012, Darmstadt, Germany, "Almost sure stability criterion for parametric roll in random seas based on top Lyapunov exponent"
  • July 2011: 7th European Nonlinear Dynamics Conference, Rome, Italy, "Ship capsizing analysis in random seas using non-standard stochastic averaging"
  • March 2010: GAMM Annual Meeting 2010, Karlsruhe, Germany, "Analysis of nonlinear stochastic ship dynamics under extended wave modeling"
  • March 2009: GAMM Annual Meeting 2009, Gdańsk, Poland, "Numerical computation of parametric induced roll motions in random seas"

Supervised Student Theses

  • J. Gauerke: "Numerische Untersuchung von Schiffen mit unterschiedlichen Rumpfformen bezüglich parametrisch angeregtem Rollen im natürlichen Seegang",
    project workHamburg University of Technology, 2009
  • C. Radisch: "Theoretische und experimentelle Untersuchung zur stochastischen Resonanz an einem mechanischen Schwinger", project workHamburg University of Technology, 2010
  • C. Wieghard: "Numerische Untersuchung deterministisch und stochastisch angeregter nichtlinearer dynamischer Systeme mit der Zellabbildungsmethode",
    project workHamburg University of Technology, 2011
  • S. Garcia: "Simulation of ship dynamics in harmonic waves using finite volume solver for RANSE",
    project workHamburg University of Technology, 2011
  • P. Mishra: "Optimisation of case transportation process consisting of accelerating conveyors and lifter", Master-ThesisProcter & Gamble Service GmbH and Hamburg University of Technology, 2011
  • M. Cretu: "Reduction and Analysis of a Softening Spring Type Duffing Oscillator using Stochastic Averaging", Master-Thesis, Hamburg University of Technology, 2012

Teaching

  • Vorlesung Mechanik I Repetitorium SS 2016

Research stays

  • April 2011: University of Illinois at Urbana-Champaign, Department of Aerospace Engineering, USA, visiting Prof. N. Sri Namachchivaya, 1 month, funded by National Science Foundation
  • September 2012: University of Illinois at Urbana-Champaign, Department of Aerospace Engineering, USA, visiting Prof. N.Sri Namachchivaya, 3 weeks
  • April 2014: Universidade Federal do Rio Grande do Norte, Departamento de Engenharia Mecânica, Brazil, visiting Prof. M. Bessa, 3 weeks, funded by Deutscher Akademischer Austauschdienst