Fluids

Fluids

ANSYS FENSAP ICE Accretion

    • Logesh Kumar M A
      Subscriber
      I am working on Ansys Fluids (FENSAP) for Ice accretion analysis on 2D and 3D airfoil. while working on 3D airfoil (NACA 0012) with boundary square computational domain the following error shows on ICE 3D. Can anyone solve the problem or relevant links to solve these problem.

      The following error also shows in error window

      | |
      | Sorting boundary elements and nodes for hflux |
      | |
      | warning: bad grid for O(2) hflux, node 687002|
      | warning: bad grid for O(2) hflux, node 710343|
      | warning: bad grid for O(2) hflux, node 745616|
      | warning: bad grid for O(2) hflux, node 754771|
      | warning: bad grid for O(2) hflux, node 701980|
      | warning: bad grid for O(2) hflux, node 707391|
      | warning: bad grid for O(2) hflux, node 751895|
      | warning: bad grid for O(2) hflux, node 673280|
      | warning: bad grid for O(2) hflux, node 673281|
      | warning: bad grid for O(2) hflux, node 673278|
      | warning: bad grid for O(2) hflux, node 673283|
      | warning: bad grid for O(2) hflux, node 701183|

      same type as above hflux numerous node comes. The above is snippet just for an idea.

      Also if there is any ANSYS FENSAP related documents related to Airfoil if shared is also appreciated.
       
      1. I am working on ICE accretion analysis on UAV Airfoil and have taken LRN 1015 used in Northrop Grumman (Global Hawk) as per literature survey and NACA0012. Anyrelated documents related to these would be appreciated.
      2. I can see whether I can use it for validation ice accretion.
      3. Other than the mentioned airfoil which can be used for UAVs - Unmanned Aerial Vehicles.
    • Shoaib Shah
      Ansys Employee

      Hi

      Looks like you have some issues with you grid. Are you using 2.5D airfoil mesh ? FENSAP only accepts 2.5D grids (1 cell thick in the span-wise direction). Also, please consult the tutorial guide from the ansyshelp.ansys.com page, you can download the grid files and guide to help you setup the cases and run FENSAP-ICE. The Introductory chapter uses the NACA0012 airfoil. 

      We don't have any UAV type airfoils in our database. Thank you. 

    • Shoaib Shah
      Ansys Employee

      I would like to add for the mesh error you are seeing above:

      The collapsed node warning will trigger if wall nodes are closer than 1 micron.

      When it is ***** it means that there are more than 99999 such nodes. 

       

      Thanks

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