Project 1 : CFD Meshing for Tesla Cyber Truck

Aim : To perform CFD Meshing for Tesla Cyber Truck

Objectives :

• Geometry clean up of Tesla cyber truck.
• Assign proper PIDs for meshing.
• To create a surface mesh.
• To create a wind tunnel around the Tesla Cyber Truck.
• To create a volumetric mesh to perform an external flow CFD analysis simulation.

Procedure :

• Step 1) Geometry clean-up:

Import the geometry in Ansa, we observed that the resolution is 20mm some parts of the geometry is not shown their accurate shape so we can change this resolution to 1mm. Go to Mesh > Perimeters > Length > set the perimeters and macros to 1 mm

And also perform a topo option on our model.

After this, we have to patch that particular unclosed surfaces using the NEW>COONS/FITTED option.

Step 2) Generate PIDs :

The Tesla Cyber Truck model after assigning the PIDs :

Step 3) Generate surface mesh :

The mesh parameters ,quality criteria and perimeters length are set according to different PID Regions .

For meshing we use CFD mesh tool and reconstruct the mesh if any off elements are there.

We consider Target lengths for the different parts of a model are as follow:

1. Body - 3 mm
2. Lights - 2 mm
3. Windows -1mm
4. Rim and Tyres - 1mm
5. Front and Rear Windshield- 2.5mm

Due to different target lengths for different components so we mesh components individually, by there pids

The Tesla Cyber Truck model after surface meshing

After meshing all the off elements were solved

Step 4) Creating the wind tunnel :

Dimensions of the wind tunnel :

Tesla Cyber Truck length :5950 mm (Approx)(also shown in screen shot)

• From the front of the Truck is 4x =23800 mm
• From the Rear of the Truck is 6x = 35700mm
• From the Top of the Truck is 3x= 17850mm
• From the bottom point =700 mm
• From the centre plane =The left and right are 1x =5950 mm
• Here we use Points > Relative , Curves > Create ,Faces > Offset, Faces > New > fitted option is used to create a wind Tunnel and we create a respective PIDs for the Wind Tunnel surfaces.
• And the meshing of same was done
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Result:

The mesh file google drive link is given below: it is provided in word file

CONCLUSION:

• The geometry cleanup is done with the help of various tools present in the topo deck.
• The surface meshing is done for a given Tesla Cyber Truck model with zero-off elements.
• The wind tunnel is created as per criteria and surface meshing is done