Hi Rajesh, good catch! It is true that these spikes seem to be model inestabilities. In this case we have not optimized further the model because it is just for the purpose of the tutorial, but if we wanted more accurate results, I would suggest the following: We can use adjust time step based on a series on time series divisors, this way we could use longer time step at the end of the simulation when the velocities are reduced.
Please make a complete dam break analysis video for beginners. Must include all important aspects of the analysis..
Falling limb of the hydrograph is showing spikes that are indicating model instability. Please check the selected time step.
Hi Rajesh, good catch! It is true that these spikes seem to be model inestabilities. In this case we have not optimized further the model because it is just for the purpose of the tutorial, but if we wanted more accurate results, I would suggest the following:
We can use adjust time step based on a series on time series divisors, this way we could use longer time step at the end of the simulation when the velocities are reduced.