Fluids

Fluids

Ansys Aqwa Ansys Aqwa error,Non linear catenary cable error

Tagged: 

    • ashwin1407
      Subscriber

      Hello, I am using Ansys aqwa and finding out the hydrodynamic response of the structure having nonlinear catenary . When I set the use cable dynamic option to yes this error appears.Can someone help me to understand what does it mean ??

      Error is
      CABIN4:CONV.FAILED STAGE#6 - ERRN=2.21E-10 LINE#2 AFTER 500 ITERATIONS
      CABIN4:CONV.FAILED STAGE#6 - ERRN=2.22E-10 LINE#3 AFTER 500 ITERATIONS

    • Yu Bi
      Ansys Employee

      Hi, those messages mean the calculation for the dynamic cables failed to converge. The reason for it could be the weight of the cable is too light. 

    • ashwin1407
      Subscriber

      Hi, thanks for the reply

      I increased the weigth of the cable and following error appears 

      CABIN4:CONV. FAILED STAGE#1-DDNMAX= 5.3360 LINE#9

      CABIN4:CONV. FAILED STAGE#1-DDNMAX= 5.2230 LINE#2

      can you explian the reason behind this?

    • Yu Bi
      Ansys Employee

      CONV means converge. This error still means the cable you set failed to converge during calculation. The reason the error shows is that the rotation in normal direction between the nodes of the cable is too large in a time step. You can try to decrease your time interval for the analysis and also have a check if cable's properties have been set properly. 

Viewing 3 reply threads
  • You must be logged in to reply to this topic.