[Anuga-user] Simulation of bores

[Ananth W. <a.w...@uq...>]

Hi,

I'm simulating tsunami bores in ANUGA in a 9m long flume with stage and x momentum as input. The attached figure shows comparison of simulations with experimental measurements as well as another numerical model BASEMENT which is similar to ANUGA. Black lines are experimental measurements, red -ANUGA results and blue - BASEMENT results. If we see at the results, the simulations are underpredicted by upto 50% within a 8m reach in both the numerical models compared to experiments. The first curve is the input condition for the model and we can see that even the queried results at the input location are not simulated properly in the models to match with the given boundary conditions. The results are similar for different bore heights and velocities.

Also, if we look at the duration of the bore, it is around 3sec with a falling limb behind peak elevation. Instead of a falling limb behind the peak elevation, if I extend the duration of the peak elevation to 2 sec followed by a falling limb (making total duration of bore 5sec), the dissipation in the simulation results is not much compared to earlier case, which suggests this is something to do with duration of peak elevation in the bore.

Could you please suggest why there is huge dissipation of wave height in simulation of bores? The still water depth was 0.13m and bore height was around 7cm at the input.


Best regards,

Ananth.



Ananth Wuppukondur

B.Tech, M.S (by Research)

PhD Candidate

School of Civil Engineering

The University of Queensland

Brisbane Qld 4072 Australia

M +61 0431 453 828

E a.w...@uq...<mailto:a.w...@uq...>

w Personal webpage<https://ananthwsharma.wixsite.com/ananthwuppukondur> Google scholar<https://scholar.google.ca/citations?user=AROgxX4AAAAJ&hl=en> ResearchGate<https://www.researchgate.net/profile/Ananth_Wuppukondur> LinkedIn<https://in.linkedin.com/in/ananth-wuppukondur-a37a6048>

CRICOS code: 00025B
[cid:33c51a30-1c5f-4c3d-98ec-34d7e3d27fca]


The University of Queensland is embracing the Green Office philosophy. Please consider the environment before printing this email.

This email (including any attached files) is intended solely for the addressee and may contain confidential information of The University of Queensland. If you are not the addressee, you are notified that any transmission, distribution, printing or photocopying of this email is prohibited. If you have received this email in error, please delete and notify me. Unless explicitly stated, the opinions expressed in this email do not represent the official position of The University of Queensland.