Wave Frequency Range in MOSES

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.

Parents Reply
  • Yes, let us talk about the "grid". 

    When you mentioned the 2.09 rad/s this defines the length of a wave.  It is common to need a wave at least the length of the body.  That is why I suggested using a larger body.  MOSES was not designed to create waves 2 m long. I think of this as the size of the grid used for the water surface.

    There is a second grid.  That is the the panels used to define the body.  It is common to use a panel at least 1/5 the length of the shortest wave.  If your body is 2 m long and you will be using a 2 m long wave, then the panel size needs to be at least  2/5 m on each side.  I think of this as the grid for the body.  Again, MOSES was not designed to make a wave 2 m long, that is why I suggested making a large body.

    Now to your question.  Yes, setting the panel size is done in MOSES Modeler.  Yes, it is done with a trimesh.

    I hope this helps.

    Answer Verified By: YUN Yin 

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