Hi, first of all, Time Response analysis uses the hydrodynamic coefficients calculated in the Diffraction analysis which is calculated based on the model-design position (position defined in the SpaceClaim/Design Modeller). The distance between the structures in a hydrodynamic interactive group will influence the hydrodynamic coefficients calculated. Therefore, if during time response analysis, the distance between the structures in a hydrodynamic interactive group becomes too far away from the initial model-design position where the hydrodynamic coefficients database are based on, the results may become very inaccurate. So, the program issued this error message.
There was once a bug with the unit conversion during the distance check. Therefore, if you are using an old version of Aqwa (before 2022R2), please use meter, kg unit in the Aqwa to avoid the bug.
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