Week 2 Challenge : Surface meshing on a Pressure valve

Aim : To create a mesh of a pressure valve for three different mesh lenght of 1mm,3mm and 5mm and mesh element of TRIA and conclude by observing all three cases and submit the file in zip format

Procedure : 1. install the model from the given link.

2. check for the errors in the given geometry with the help of check optioniven geometry with the help of check option.

3. for the given model we found alot of single cons error shown below

4. solve the errors in the geometry from TOPO deck that is also called GEOMETRICAL CLEANUP and clean up all the errors.

5.check the error after cleaning the erorr to avoid problems while meshing and after cleaning all the single cons the model will look like this.

6.now we will create PID's fr all the surfaces and assign them and for the internal part of the pid assigning we will use the pid region option. as it selects the region pid wise .

7.as the pid's are assigined after that delete the faces that are small than the mesh lenght with the help of undelete option.

8. after we assign the pid's we will start meshing with three different mesh lenght for:

8a. photo below shows meshing parameters and quality criteria for 1mm.

8b.photo below shows meshing parameters and quality criteria for 3mm.

8c.photo below shows meshing parameters and quality criteria for 5mm.

9.after assigining the mesh lenghts and assiging min and max mesh lenght in quality criteria we mesh the model for all the mesh lenght respectively.

10.show the result and write observation for all 3 mesh lenght.

Observation:

(a) mesh lenght = 1mm of spring of pressure valve

(b) mesh lenght = 3mm of spring of pressure valve

(c) mesh lenght = 5mm of spring of pressure valve

from all three pictures shown above we can say that the geometry of the 1mm mesh lenght is more defined and accurate as compare to the 3 and 5mm mesh lenght respectively. the spring of the pressure valve in the 3mm is good but it looks more rigid and uncontinous were as the 5mm mesh lenght spring surface looks like a 2d surface and not accceptable. hence, we can conclude that the quality of mesh depends on the target lenght so the less the mesh the more fine and accurate results we can obtain.

Project Outcome : From this project we got to know about the significance of geometrical clean up and how much important it is to avoid errors in meshing phase and good grasp on how to create and assign PID's to different surfaces and learn about the different tools covered while working onn this project and also learned the concept of how differrent mesh lenght affects the geometry of the surface.

Result : from the observation we can conclude that the quality of mesh depends upon the target lenght or mesh lenght and providing proper quality criteria for fine and accurate geometry mesh. below are the results of the mesh lenghts of 1mm , 3mm and 5mm respectively.

1mm mesh lenght

3mm mesh lenght

5mm mesh lenght