Computational Geomechanics

Krishna Kumar, krishnak@utexas.edu

UT External Advisory Committee
5th April 2019

Global landslide hazard

Fatalities due to landslides, 2007 - 2013 (Source: Nasa, 2015).

Oso landslide (2014)

8 million cubic meters of glacial deposits and water-filled debris material transported to a distance of 1 km (Haugerud., 2014).

Scales of modeling soil

MPM slope failure: pore pressure changes

Selborne case study of a 9 m high cut-slope slope (Soga et al., 2016)

Disney's Frozen: Snow simulation

Sungkwan Park et al (2014)

MPM submarine landslide

Depth-averaged Material Point Method (Taka et al., 2012)

Mechanism of submarine landslides

Material type influences the mode of the flow.
Target: Clay‐rich flow (Less diffusive, Hydroplaning).

Discrete Element Method

Collapse on an inclined plane

aspect ratio 'a' of 6 on a slope of 5*

Super computing

LBM - DEM a = 0.8 & 10,000 particles

LBM Nodes = 50 Million : DEM grains = 10000 discs
Run-time = 4 hours
Speedup = 125x on a Pascal P100

DEM simulations

Agent Based Modeling of cities

Soga et al., (2017)

Network analysis of Herpes Simplex Virus (HSV2)

Fossil data

Transmission route

Paranthropus boisei is the intermediary species that gave humans herpes!
(Underdown et al., 2017)

The usual suspects?

Top 5% of all research outputs scored by Altmetric

Cambridge: 24 things we learned in 2017
#3. We found out who gave us herpes

Thank you!
and
Hook 'em!