Learning Forum

[rd_asm]

I am trying to study the wind flow through a house with thick walls and having openings on its opposite walls but unable to model the house.. I am using spaceclaim..

Kindly guide me in modelling the geometry..

Thanks in advance..

Regards

[peteroznewman]

There are many tutorials on how to use SpaceClaim on YouTube such as the one linked to below. Seek out more and learn how to use SpaceClaim.
https://www.youtube.com/watch?v=4eUp81IObKw

[rd_asm]

thank you so much for your reply.. I have created two rectangles and pulled them and got a model as shown in the figure below... but unable create the roof and provide thickness to the bottom wall.. I have also worked on zero thickness model.. but finding difficulty in creating this type of thick walled model.. I am new to ANSYS so it would be of great help if anyone provide some guidence...

[peteroznewman]

Instead of sketching the floor plan and pulling up, sketch the cross-sectional view of the house that includes the shape of the roof and pull along the length of the house to get a solid. Then use the Shell Tool to hollow out the inside of the house by removing the floor and assigning a wall thickness. Then you can sketch on the plane of the floor and sketch a single rectangle and pull that up into the house to make the floor thickness.
Next pick a face of the house where you want a window and sketch a rectangle and pull it through the wall to make an opening.

[rd_asm]

thank you so much.. I shall try..
Regards..

[rd_asm]

hello Sir I have created the model as shown below... Moreover I have gone through your replies and video tutorials in this thread-
/forum/discussion/1465/reduce-mesh-skewness-for-an-isolated-generic-building/p1
but unable to understand one thing why we need to create planes along the inner and outer faces of the building and slice the air domain(enclosure).. would you like to throw some light on that ??

[peteroznewman]

If you use planes to slice the air and the solid on planes where they have an interface, you can create many six-sided solids that easily mesh with hex elements and control mesh density.

[rd_asm]

thank you so much Sir for your reply..
I was trying to to generate a mesh containing tetrahedral elements near the building, hex elements away from the building and prism elements near the ground.. and for this I have split the domain by using multiple planes as demonstrated in tuttorial videos but I have obtained a very poor quality mesh.. multizone for hex elements, patch conforming tetrahedron method for tet elements used and infation on ground has been applied... images attached.. how the mesh quality can be improved.. please suggest..

[peteroznewman]

Keep splitting the solids up using planes based on the inner faces of the house and the planes on each window and eventually you will not need any tetrahedral elements and the skewness will be ideal as it will be a hex only mesh.

[rd_asm]

Thank you Sir for your guidance..