Project 1 : CFD Meshing for Tesla Cyber Truck

AIM :

For the given model, check and solve all geometrical errors and Assign appropriate PIDs. Perform meshing with the suitable Target length and element Quality criteria.

PROCEDURE :

AS WE OPEN THE TESLA CYBER TRUCK IN ANSA IT IS SHOWN BELOW.

AFTER DOING THE TOPO GEOMETRIC ERROR ARE THIS SHOWN BELOW

WE CAN DO THE CHECK UP THE MODEL

THIS IS INTERSECTION ERROR SHOWN IN THE MODEL.

THIS IS THE GEOMETRY ERROR IN THE MODEL.

NOW WE CAN DO AS THE BMW CHALLENGE BY DELETE THE ONE HALF AND SYMMETRY THE FINISH HALF.

FOR THE DELETING THE HALF OF THE MODEL WE THE LINE IN THE HALF OF THE MODEL SO, WE CAN CREATE THE LINE USING THE PLANE CUT OPTION AND DELETE IT.

SELECT THE HOTPOINT AND THE PLANE CUT 

NOW THE CENTER LINE IS CREATE CAR DIVIDED INTO TWO.

NOW WE CAN DELETE IT.

WE CAN GO TO GEOMETRIC CLEAN UP

IN THIS EXTRA SURFACE PRESENT INSIDE THE MODEL WE DELETE IT.

HERE THE INTERSETION ERROR IS GOING AS CUT THE UNWANTED SURFACE AND CREATE A NEW SURFACE

HERE THE INTERSECTION IN THE AXLE SHAFT AS WE NEED OF THIS PART WE DIRECTLY AND FILL THE HOLE.

USING THE FILL HOLE OPTION HOLE HAS BEEN FILLED

SAME FOR THE OTHER WHEEL IS ALSO DELETED THE SHAFT AND FILLED THE HOLE.

NOW WE CLEAR ALL INTERSECTION ERROR FROM MODEL.

NOW WE GO FOR THE RED PRESENT OVER THERE IN MODEL.

HERE SOME RED COONS PRESENT OVER THERE WE CAN CREATE NEW SURFACE THERE.

HERE ALSO SOME RED PRESENT WE CLEAR IT.

HERE THE OPENING IS THERE BUT WE NEED THAT WE CLOSE IT.

HERE, THERE IS SOME RED PRESENT OVER THERE BUT THE RED COON IS VERY SMALL SO, DELETE THE NEARER SURFACE AND CREATE A NEW SURFACE ON IT.

THIS MORE FINE WHILE DOING THE SURFACE MESHING.

AS WE DONE THE GEOMETRIC AND INTERSECTION CLEAN UP

SO, WE CAN GO TO THE SURFACE MESHING,

AS WE GO TO MESHING WE NEED TO ASSIGN THE PIDS FOR EACH PARTS

FOR THE BODY IS PID

THIS FOR THE LIGHTS PID

THIS FOR THE WINDOWS PID

THIS FOR THE TYRES PID

THIS FULL PIDS ARE SETTED AND OTHER ARE DELETE USING THE COMPRESS TOOL.

NOW WE GO FOR THE SURFACE MESHING 

AS WE NOW THE QUALITY CRITERIAS AND MESHING CRITERIAS 

THE MINIMUM LENGTH AND MAXIMUM LENGTH  IN THE QUALITY CRITERIA IS THE OVER FIXED CRITERIA THAT WILL NOT CHANGE OFTEN.

THE MINIMUM LENGTH AND MAXIMUM LENGTH IN MESH CRITERIA ARE THE USED THE EACH PART DIFFERENT MESH TARGET LENGTH THE EACH PARTS  IT CHANGE FOR FOR THE PARTS 

FOR THE TARGET LENGTH FOR THE EACH PARTS ARE:

1. BODY - 3mm
2. LIGHTS - 4mm
3. WINDOWS -2mm
4. RIMS AND TYRES - 2mm

FIRST WE GO FOR THE RIMS AND TYRES 2mm

SO, HERE WE FIXED THE SKEWNESS VALUE, MINIMUM AND MAXIMUM LENGTH OF THE QUALITY CRITERIA BASED ON THE ALL PARTS

HERE, WE GIVEN THE RANGE BETWEEN THE 1.5 TO 2.5 TO GET TARGET LENGTH AS 2mm.

HERE WE NEED DO THE CLEAR THE OFF ELEMENTS SO, WE DO IMPROVE BY RIGHT CLICK IN OFF.

THEN WE CHOOSE RECONSTRUCT OR RESHAPE OR SMOOTH OR FIX QUALITY.

USING THE FREEZE OPTION WE CAN FREEZE MESHED ELEMENT AND DO THE MESHING THE ERROR AND OFF WILL NOT RAISED.

THEN WE GO FOR THE WINDOWS THE TARGET LENGTH IS 2mm.

DOING THE CFD MESH FOR THE RANGE 1.5 TO 2.5 

THEN THE OFF ELEMENTS ARE CLEARED

NOW CAN FREEZE IT.

THE WE GO FOR THE LIGHTS THE TARGET LENGTH IS 4mm

NOW WE GO FOR THE CFD MESHING 

THEN THE OFF ELEMENT ARE CLEARED USING THE IMPROVE OPTION 

NOW WE CAN FREEZE IT.

THEN GO FOR THE BODY THE TARGET LENGTH IS 3mm

NEXT DOING THE AUTO CFD SPACING AND THE CFD MESHING  RANGE BETWEEN THE 2.5 TO 3.5 MM

THEN WE NEED CLEAR THE OFF ELEMENT BY IMPROVE OPTION

THEN WE CAN FREEZE IT

THIS OVER HALF TESLA TRUCK IS MESHED PERFECRTLLY 

HERE WE NEED TO UNFREEZE THE ALL PARTS TO MIRROR HALF PART

FOR THE MIRROR WE CAN USING THE TRANFORM TOOL TO COPY MESHED HALF PART

FIRST SELECT ALL PART OF MODEL AND MIDDEL CLICK

THEN THE POP WINDOW SHOWS THERE SELECT THE SYMMETRY AND 3POINT MIRROR 

NOW SELECT THE 3 POINTS AND MIDDEL CLICK

NOW THE HALF PART IS SUCESSFULL MIRRORED

AFTER MIRRORING THE PART THERE NO OFF ELEMENT CKECKED

NOW WE NEED TO CREATE A WIND TUNNEL FOR THAT WE NEED POINT TO CREATE A SURFACE 

FOR THE WE CAN USE THE RELATIVE POINT OPTION

WE CREATED THE POINTS AS THE DONE BMW WIND TUNNEL AS

'X' IS THE LENGTH OF THE CAR

FRONT 4 X

BACK 6 X

SIDES X FROM ANY OF THE POINT 

TOP 3 X

BOTTOM LENGTH SHOULD NOT INTERSECT THE WHEELS

THE SURFACE HAS BEEN CREATED 

NOW WE CAN OFFSET THE CREATED SURFACE.

AS WE ASSIGNED PIDS FOR THE SURFACES OF THE WIND TUNNEL.

 NOW WE CAN GO FOR THE BOTTOM SURFACE MESHING THE RANGE AS 15 TO 25MM AND THE TARGET LENGTH AS 20MM 

MESHING AS DONE

NOW GO FOR THE TOP SURFACE AS RANGE 80N TO 120MM TARGET LENGTH AS 100MM

MESHING IS DONE

NOW FOR THE SIDE SURFACE ARE NEED TO MESH LIKE 20 TO 100 FROM  BOTTOM TO TOP SURFACE BECAUSE WE VOLUME AROUND THE TRUCK ONLY

WE CAN USE THE MANUAL SPACING 

HERE THE D START IS MESHING THE START FROM 20MM

DLIMIT IS MESHING ENDS WITH 100MM

SELECT THE SIDE EDGES WHICH UPWARD DIRECTION 

HERE PERIMETER AND MARCOS ARE SPACED MANULALLY

MESHING AS BEEN DONE 

IT SHOWS THE MESHING VARIOUS 

NOW WE GO FOR THE VOLUME MESHING 

GO FOR THE DEFINE SELCET THE WHOLE DATA BASE 

IT SHOWN THE VOLUME BETWEEN THE TRUCK AND WIND TUNNEL  AS WE NEED IT 

HERE IT SHOWN IT VOLUME INSIDE THE TURCK SO, WE NO NEED  THE VOLUME

AS WE SET THE TETRA CFD MESH VOLUME.

NOW NEED TO DO THE VOLUME BUT WE NEED THE SUPER COMPUTER TO DO THE VOLUME MESHING IT TAKE THE AROUND THE 3 TO 4 DAYS IN THE SUPER COMPUTER SO, CAN'T DO IT.

For the given model, check and solve all geometrical errors and Assign appropriate PIDs. Perform meshing with the suitable Target length and element Quality criteria.

RESULT:

FOR THE GIVEN MODEL, CHECK THE GEOMETRIC AND INTERSECTION ERROR ASSIGN THE PIDS AND SURFACE MESHED WITH QUALITY CRITERIAS AND CREATE THE WIND TUNNEL AND THAT ALSO SURFACE MESHED.

 

LEARNING OUTCOMES

• SYMMETRY TOOL
• QUALITY CRITERIAS
• MESH CRITERIAS 
• FREEZE AND UNFREEZE 
• RELATIVE POINT CREATION
• IMPROVE  THE OFF ELEMENT LIKE RECONSTRUCT, RESHAPE,SMOOTH,FIX QUALITY.
• SKEWNESS 

CLICK FOR THE TESLA TRUCK MESHED MODEL:

CLICK HERE TO DOWNLOAD