{"id":301919,"date":"2023-08-17T14:06:45","date_gmt":"2023-08-17T14:06:45","guid":{"rendered":"\/forum\/forums\/topic\/very-high-pressure-variations-in-the-simulation-of-a-sph-wave-tank\/"},"modified":"2023-08-17T14:06:45","modified_gmt":"2023-08-17T14:06:45","slug":"very-high-pressure-variations-in-the-simulation-of-a-sph-wave-tank","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/very-high-pressure-variations-in-the-simulation-of-a-sph-wave-tank\/","title":{"rendered":"Very high pressure variations in the simulation of a SPH wave tank"},"content":{"rendered":"

Hello,<\/p>\n

I have an LS-DYNA model which simulates the behaviour of a real-world wave tank. It is currently modelled as 2D but I plan to expand it to 3D once it is verified. Visually, the tank appears to function great (see image 1), however when you view the pressure distributions it is evident that it is not functioning as intended. I am trying to verify it against literature and the maximum pressure should be ~6,000 Pa, but my model gives values ranging to 20,000+ Pa when the piston on the left hand side begins to move, and the pressure distribution beneath the wave is not even (see image 2). Also, the moment the piston begins to move it sends a very high pressure wave across the bottom of the tank in a fraction of a second. If anyone has any insight on why this issue is occuring I would greatly appreciate your input.<\/p>\n

Note that the piston and boundary particles are modelled as the same material as the water but they have constraints place onto them. Thank you.<\/p>\n

IMAGE 1<\/strong><\/p>\n

<\/p>\n

IMAGE 2<\/strong><\/p>\n

<\/strong><\/p>\n

<\/strong><\/p>\n","protected":false},"template":"","class_list":["post-301919","topic","type-topic","status-closed","hentry","topic-tag-sph"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t