TY - GEN
T1 - Numerical modeling of shallow landslide impacts on flexible protection systems and its validation with full scale testing
AU - Boetticher, Albrecht V.
AU - Volkwein, Axel
AU - Wüchner, Roland
AU - Bletzinger, Kai Uwe
AU - Wendeler, Corinna
PY - 2011
Y1 - 2011
N2 - Innovative flexible protection barriers against shallow landslides, made from high tensile steel meshes, demanded the development of numerical models for the different mesh types accompanied with 1:1 scale prototype field testing. To generate the barrier model, a special Discrete Element had to be developed that represents the chain link type of steel mesh. It was crucial that it includes the complex out-of-plane height of the mesh that accomodates the local high deformations of the net. The filling process of the barrier is simulated using OpenFOAM, taking the fluid-structure interaction with high deformations into account. In addition to the shear thinning behaviour of the mud, the turbulence in form of a large eddy simulation can be introduced, having regard to the interaction with the complex geometry and free surface by a Dynamic Mixed Model approach for the subgrid scales. The model is validated with 1:1 scale tests where shots of 50 m 3 of mud travel down a 40 m long slope and hit the barrier.
AB - Innovative flexible protection barriers against shallow landslides, made from high tensile steel meshes, demanded the development of numerical models for the different mesh types accompanied with 1:1 scale prototype field testing. To generate the barrier model, a special Discrete Element had to be developed that represents the chain link type of steel mesh. It was crucial that it includes the complex out-of-plane height of the mesh that accomodates the local high deformations of the net. The filling process of the barrier is simulated using OpenFOAM, taking the fluid-structure interaction with high deformations into account. In addition to the shear thinning behaviour of the mud, the turbulence in form of a large eddy simulation can be introduced, having regard to the interaction with the complex geometry and free surface by a Dynamic Mixed Model approach for the subgrid scales. The model is validated with 1:1 scale tests where shots of 50 m 3 of mud travel down a 40 m long slope and hit the barrier.
KW - Chain-link finite element
KW - Coupled problems
KW - Freeface flow
KW - Natural hazard protection
KW - Shallow landslides
UR - http://www.scopus.com/inward/record.url?scp=84857389454&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84857389454
SN - 9788489925786
T3 - Proceedings of the 4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011
SP - 731
EP - 742
BT - Proceedings of the 4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011
T2 - 4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011
Y2 - 20 June 2011 through 22 June 2011
ER -