Institute of Thermomechanics Seminar

is organized by the Institute of Thermomechanics CAS,, v. v. i.
at 10:00
in the lecture rooms B or A in the main building of the Institute of Thermomechanics CAS, v. v. i. (contact here)
 



 

Program: 2019 | 2018 | 2017 | 2016 | 2015 | 2014
 

Next lecture:


Wednesday, February 13, 2019 at 10:00, Lecture Room B

Theoretical and implementation problems of the multi-dimensional Fokker-Planck equation analysis using the Finite Element Method

Dr. Jiří Náprstek
Institute of Theoretical and Applied Mechanics
The Czech Academy of Sciences, Prague
 

Fokker–Planck equation is one of the most important tools for investigation of dynamic systems under random excitation. Finite Element Method represents very effective solution possibility particularly when transition processes are investigated or more detailed solution is needed. However, a number of specific problems must be overcome. They follow predominantly from the large multi-dimensionality of the Fokker–Planck equation, shape of the definition domain and usual requirements on the nature of the solution which are out of a conventional practice of the Finite Element employment. Unlike earlier studies it is coming to light that multi-dimensional simplex elements are the most suitable to be deployed. Moreover, new original algorithms for the multi-dimensional mesh generating were developed as well as original procedure of the governing differential and algebraic systems assembling and subsequent analysis. Finally, an illustrative example is presented together with aspects typical for the problem with large multi-dimensionality.


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