Imperial College London
Portrait Picture

Stephan Kramer

Faculty of Engineering, Department of Earth Science & Engineering

Advanced Research Fellow
 
 
 
//

Contact

 

s.kramer Website CV

 
 
//

Location

 

4.85Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Pan:2022:10.1002/fld.5090,
author = {Pan, W and Kramer, SC and Piggott, MD and Yu, X},
doi = {10.1002/fld.5090},
journal = {International Journal for Numerical Methods in Fluids},
pages = {1--33},
title = {Modeling landslide generated waves using the discontinuous finite element method},
url = {http://dx.doi.org/10.1002/fld.5090},
volume = {94},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A new two-layer model for impulsive wave generation by deformable granular landslides is developed based upon a discontinuous Galerkin finite element discretization. Landslide motion is modeled using a depth-averaged formulation for a shallow subaerial debris flow, which considers the bed curvature represented by the local slope angle variable and accounts for inter-granular stresses using Coulomb friction. Wave generation and propagation are simulated with the three-dimensional non-hydrostatic coastal ocean model Thetis to accurately capture key features such as wave dispersion. Two different techniques are used in treating wetting and drying (WD) processes during the landslide displacement and wave generation, respectively. For the lower-layer landslide motion across the dry bed a classical thin-layer explicit WD method is implemented, while for the resulting free-surface waves interacted with the moving landslide an implicit WD scheme is utilized to naturally circumvent the artificial pressure gradient problem which may appear in the dynamic interaction between the landslide and water if using the thin-layer method. The two-layer model is validated using a suite of test cases, with the resulting good agreement demonstrating its capability in describing both the complex behaviors of granular landslides from initiation to deposition, and the consequent wave generation and propagation.
AU  - Pan,W
AU  - Kramer,SC
AU  - Piggott,MD
AU  - Yu,X
DO  - 10.1002/fld.5090
EP  - 33
PY  - 2022///
SN  - 0271-2091
SP  - 1
TI  - Modeling landslide generated waves using the discontinuous finite element method
T2  - International Journal for Numerical Methods in Fluids
UR  - http://dx.doi.org/10.1002/fld.5090
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000785896500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/10.1002/fld.5090
UR  - http://hdl.handle.net/10044/1/97905
VL  - 94
ER  -
Download