Tahnia Tresnoadi

Hello,  I am currently working on ocean current simulation in Binuangeun Waters, South Java, Indonesia. The lenght x height of the domain is 370 km x 245 km the bathymetry is quiet steep (>6000 m) due to the Java Trench. Simulation period is 30 days in September 2020 with tide form MIKE Global Tide Database 0.125x0.125 as the input.  At the beginning the simulation blow up after 3 days simulation with Elevation too Large caution. It is located at the top right corner which is the meething node of Land and Open Boundary. I was trying to solve it by changing the bathymetry (this area is far from my area of interest) due to bathymetry at nodes in one element could be 15 m-60m-400m. There was a small progress but blow up still happens. I keep changing the bathymetry at the top right corner in order to make it change gradually. The running was success, theres is no error in surface elevation spatially and temporally, yet the current speed value at the top right corner area seems higher than others, and it keep increasing until the end of simulation. I am attaching the result with 2 diffrent domain. With the bathymetry that i've changed, i also trying to expand my domain. Already changed the boundary from rectanguler to rounded, and trying to change the mesh manually using "mesh editing". But the current speed at the top right corner still increasing until the end of simulation. At first, i think the problem was in the bathymetry, but now iam not so sure since i change the bathymetry gradually and the currend speed value still bad.  What do you think the problem is? I am seeking for every solution that might help?  Thank you.