嗨,大家好,
我是Moses的新用户,最近尝试用Moses模拟一艘长约2米的散货船模型,求出船舶在90度波浪条件下的RAO图。但是,我发现在设置波形频率范围时,最大频率只能设置在 2.09 rad/s 左右。 根据AQWA的经验,网格大小会影响最大频率允许范围,我尝试手动减小模型的网格大小,但没有奏效。如何将频率范围更改为大于 8 rad/s? following attachment is Moses Motion error when i am trying to enter a large frequency.
Hi, I had to use Google translate to read your question. Maybe some of the information translated is confused.
You are trying to analyze a vessel that is 2 meters in length? MOSES was not designed to analyze vessels of such small dimension. Have you considered using Maxsurf? Maxsurf is also a Bentley product.
I hope this helps.
Sorry, something wrong with my google chrome, yes, i am trying to analyze a 2 meters vessel with different water depths, I considered using maxsurf motion before. however, the maxsurf motion looks can not change the water depth.
One option is to scale your model up to 20 meters.
Thank You so much, but i am still thinking about that when I got the frequency with the highest amplitude in RAO for 20 meters ship, how to scale the frequency back with a 2 meters vessel.
You are correct you have to be careful of how to scale everything up and then how to scale everything back down. I would have to review my textbooks on model tests. Please review your textbooks for the proper way to scale.