Week 2 Challenge : Surface meshing on a Pressure valve

AIM/OBJECTIVE

      To mesh the given model for a target length of 1mm, 3mm and 5mm respectively. CHeck for the geometrical error and perform topology cleanup accordingly. Use the element type tria.

PROCEDURE

 Srep-1 : Load the given file in ANSA software

Step-2 : Check the geometry of the model using Checks Manager

Step-3 : Once the errors are obtained take necessary steps to rectify it. Use fill hole and faces new option to rectify the errors. For meshing and CFD the given model should be a closed one.

Step-4 : Check the geometry again for the errors. If any error persist rectify it. If triple cons are in the error make use it is necessary or not

Step-5 : Unwanted small surfaces are removed for better meshing results. Faces cuts option is used to remove small and unwanted surfaces.

Step-6 : Again check for geometrical errors using checks manager

Step-7 : Using property manager PID's are assigned to the various parts of the model

Step-8 : Meshing is done with element type of tria and mesh length of 1mm, 3mm and 5mm. Target length of the mesh is altered in mesh property manager for the various mesh length.

LEARNING OUTCOMES

 By doing the above meshing of the model following tools were able to practise and understand

     1. Geometry checks manager to check the errors

     2. Creating new faces and surfaces using fill hole and faces new tool

     3. Removing small and unwanted surfaces using face cut tool

     4. Assigning PIDs to the various parts of the model

     5. Surface isolating tools sunch as OR, AND, NOT, !NOT, ALL, INVERT, LOCK, NIEGHB was used

     6. Visibilty tools such as Macros, Cross etc are used in the process

     7. Various other tools such as ENT, PID, SHADOW, WIRE etc were also used in the excercise

     8. Meshing tool were used for meshing the model forthree diffrent mesh length 

RESULT

 These are the meshing result

Mesh length : 1mm

Mesh length : 3mm

Mesh length : 5mm

CONCLUSION

    Meshing of the given model was carried out in ANSA software for mesh length of 1mm, 3mm and 5mm. By comparing the three meshing results it was observed that the smaller the mesh length, higher accuracy of the meshing is achieved. Number of the elements also varies according to the meshing length. Hence aaccuracy of the meshing is indirectly proportional to the length of the mesh. Tools required for developing meshing in ANSA was studied in this excercise.