Week 4 Challenge : CFD Meshing for BMW car

AIM:

For the given model check and solve the all geometrical erors and half portion and assign ppropriate PIDs.and also mehing with the given target length and element quality creteria.After meshing the half modeluse symmetry to the other side.

PROCETURE:

STEP 1:

Download the model in dashboard and upload to ANSA software

STEP 2:

In the given model is some areas are uneven so first correct the model

In this case we can use fine option neigther clasic mesh but mesh mode is better

Select the mesh tool in perimeters length should be one and select the box type and enter the middle botton problem was solved

STEP 2:

I the given model the half portion is symmetry to the another half portion so only we do the process for half portion

We use the universal delete option to delete the half portion to the given model

STEP 3:

In the stage we use the check manager to find the geometrical error

Error was founded and upcoming stages we will solve the error

STEP 4:

Given model is big so we solve the error in sparate part

First three grill presented in the front select the one grill and solve the error

Using the inot option only select the grill one after use the lock option

step by step we clear the unwanted surface and cones

finaly we get the

grill one part was solve the all error

STEP 5:

To solve the error in mirror portion

to delete the extra surface for the portion

after check the geometric error that will be fine

STEP 6:

now chose the frontgrill 2

Delete the unwanted surface

next this surface also deleted

after delting the surface some extra surface also having

this surface also one by one deleting

the sharp edges usig the cut and project cut option

after deleting the unwnated edges and surface we do the face in back side grill usin the new option

finaly check to the check manager to geomeric error

some errors are observed after step step by corrected

STEP 6:

select the logo and solve the geometric errors

using the delete option to delete the unwanted surface

after mension the area ww get trible cone so delete the surface and create the new surface using the new option

after finish the all surface to check the geometric check

STEP 7:

delete the unwanted surface and trible cones

STEP 8:

Select the tyre and solve the geometrical error for the tyres

first delete the extra and over laping surfaces

after deleting the surface using the new cones option to make the new surface

and check the geometrical error it will be fine

STEP 8:

Asign the PIds

totaly we asign 8 pids

using the set PIDs option to select the part and make the new pids

STEP 9:

grill 3

first select the grill 3 part and lock the part

to delete the unwanted surface

delete that surface

after delete the surface we uss the project cut to cut the surface

using the universal delete option to delete the below surface

delete the mention surface

finaly we use the new cones option to make the new surface

finaly check the check manager all geometrical error was solved

STEP 10:

to use the cones 2 curve option to make the cones

after make the cones delete the unwanted surface to meke the new surface using the new cones option

to check the check manager we got the error after to resolve the error

finaly we got the without giometric error part

STEP 11:

after all giometriuc error was solved goin to the transform option

to click the transform option make the copy

using the symmetric option mirroring the full part

to use the mirror 3 points plane to select the 3 points to mirror the part

PIDs view

STEP 12 :

mesh

given target length parameters to mesh the all pids

given parameters

1. Body - 3 mm
2. Lights - 4 mm
3. Grills - 1 mm
4. Rims and Tyres - 2 mm
5. Optical Rear view mirror - 2 mm
6. Window - 2 mm
7. Silencer - 3 mm
8. Logo - 1 mm

logo and grill

tyres and windows and side mirror

body

STEP 13:

using the points option to create the new nodes to use the relative option

the lengths are meashare length

negative y direction and length is 80 set

x positive direction length is 750 set on one point

z direction length is 5200 one point was mensioned

to use the new cones option to make the surface

asign the pid s names it self top,bottom,side,rear

using the spacing option to min length and max length 20 to 100

using the cfd algorithm

CONCLUSION:

Given the model to solve the geometricla error and mesh the given target lengths

DRIVE LINK

https://drive.google.com/file/d/1EqotfJB3Ur_WdTbkW1J3DUns-ngAWqg4/view?usp=sharing