* On the General Analytical Solution of the Kinematic Cosserat Equations*

Dmitry A. Lyakhov,National Academy of Sciences of Belarus,

Vladimir P. Gerdt,Joint Institute for Nuclear Research,

Zahid Hossain,Stanford University,

Ingmar H. Riedel-Kruse,Stanford University.

Andreas G. Weber,University of Bonn.

**In Proceedings of Computer Algebra in Scientific Computing, CASC 2015, Pages 367-380,**

Lecture Notes in Computer Science, Springer, Sept. 2016.

Lecture Notes in Computer Science, Springer, Sept. 2016.

##### BibTeX

@misc

author = {Dominik L.~Michels and Dmitry A.~Lyakhov and Vladimir P.~Gerdt and Zahid Hossain and Ingmar H.~Riedel-Kruse and Andreas G.~Weber.},

title = {On the General Analytical Solution of the Kinematic Cosserat Equations},

note = {To be published in Proceedings of Computer Algebra in Scientific Computing, CASC 2016},

year = {2016},

month = sept

}

##### Abstract

Based on a Lie symmetry analysis, we construct a closed form solution to the kinematic part of the (partial differential) Cosserat equations describing the mechanical behavior of elastic rods. The solution depends on two arbitrary analytical vector functions and is analytical everywhere except a certain domain of the independent variables in which one of the arbitrary vector functions satisfies a simple explicitly given algebraic relation. As our main theoretical result, in addition to the construction of the solution, we proof its generality. Based on this observation, a hybrid semi-analytical solver for highly viscous two-way coupled fluid-rod problems is developed which allows for the interactive high-fidelity simulations of flagellated microswimmers as a result of a substantial reduction of the numerical stiffness.

##### Documents and Links

PDF,Authors' Version,WWW,CASC 2016.