Project 1 : CFD Meshing for Tesla Cyber Truck
AIM:
To solve the geometrical error and assign proper PID naming and followed by surface and volume mesh need to be perform for the given model along with quality criteria.
OBJECTIVE:
- clean up of the geometrical errors
- surface mesh to be done.
- create wind tunnel around the the model.
- volumetric mesh is performed.
Steps and Procedures :
1) import the given geometry by opening the ANSA in the pertformance mode 3.
FILE ----> IMPORT ----> given model
2) Once the model is imported make a section plane and cut into half section of the model.
3) Check for the unit system to make the clean up easy.
4) Delete all the unnecessary hot points to make the clean up easy.
5) Make the edges fine so that the hidden surface retract its original surface.
6) Before starting the clean up above 5 are the basic steps.
7) Now topo is made to make all the coons to yellow at most possibilities.
8) open hatches to check the overlapped surface and if any found make it clean bt delete\ing it.
9) create the new coons by surface cons or faces new to fill the un matched surface.
10) check the connection of the every edges and make it proper.
11) Avoid single and Triple coon.
12) Use cut and intersect option to join the adjoint surfaces.
13) Project is used to replicate the faces on the parallel side.
14) extend is used to enlarge the area.
15) Once done assign PID names accordingly by using set pid.
16) Once pid naming is done go for checks like geometry checks , intersection checks , penetration checks, duplicate pid namein the checks manager.
17) make the error clear by appropriate method. Duplicate pid name cn be rectified by compress.
18) Once all the error are rectified go to mesh deck assign length and macros for the respective pid.
19) For the target length of 5mm :
The door, bed wheel arch , roof, body , tyre, wind shield, window are comes under this target length .
the maximum and minimum target length is 7mm and 3mm. Since the above mentioned pid has larger surface the target length is maximum in order to capture the cad data.
20) For the target length is 3mm:
The bumper, mirror, frontal area, apillar, d pillar comes under this target length.
21) For 1mm target length :
Baffles are made.
22) The quality parameters is set in fluent zone for skewness, growth ratio.
23) Once the respective pid is assigned with target length surface mesh is done
advance front --> in the shell mesh.
24) Once the mesh is completed. Go for hidden to find the off elements of the mesh if it is there clear it by reconstruct . reshape , improve , fix quality, smooth, swap, fuse, split, paste.
25) Once these are done freeze the element . create the wind tunnel .
26) Wind tunnel is used for the simulation of aero projects of the car.
27) there are certain standards for the wind tunnel like frontal area should be 4times the length of the car, back should be 6 times the length of the car, top should be 3 times the distance of top, bottom should be at the tyre face.
28) With this standards the tunnel has been created.
29) Now check for volume by define ---> whole db.
volume ---> define ---> whole db
E10 --> CAR VOLUME
E8 --> TYRE VOLUME
E13 --> WIND TUNNEL VOLUME
UNMESHED SHOULD BE MESHED TETRA RAPID.
30) Due to the configuration problem voume mesh cannot be generated hence defining it self ok.
Conclusion:
The given model is geometrty clean up and surface mesh and volume is defined.
The link is given here:
https://drive.google.com/file/d/15LlXdTML3qLGmlR_SH4w22A_XyMlV_uD/view?usp=share_link