Week 4 Challenge : CFD Meshing for BMW car

AIM - Creating volumetric meshing of BMW CAR model and WIND TUNEL surface meshing

PROCEDURE - For creating volumetric meshing of BMW CAR model, there have some steps, Following steps are mention below

1. TOPOLOGICAL CLEANER
2. PID CREATION
3. QUALITY CRITERIA
4. SURFACE MESHING

5. WIND TUNEL SURFACE MESHING

6.VOLUMETRIC MESHING

For creating volumetric meshing of WIND TUNEL, there have some steps, Following steps are mention below

1. TOPOLOGICAL CLEANER -

First of all, some features does not have accurate shape, so need to change the resolution of the 3D curve.

Select PID view, after that I will select mesh mood,

Select Perimeter - > 1mm and , Macro - > 1mm (By the box selection)

Now resolution or shape of the model is looks good.

Before starting topo cleaner, i consider this part is symetric except LOGO part. so, i will work on the half of the model.So now i select the half of the model and dselect only part.and check wire frame mode for selecting properly or not

After completing meshing of half portion, i will do reflecting on other portion by using symetry option

Front light -

So now, i have deleted unnescserry surface of inside of light by Entity and PID selection.

Now all unnescserry surface has gone of the lights and there have no present single and triples cone over there

Now there have single cons, i will fix it by using paste option

Now, there have no present single and triples cone over there

Front Grill - Now there have some single cons and triple cons present there, and i have to resolvce this.

First i have isolate the grills and i have remove every single and tripple cons.

Now , there have no single and tripple cons, checked by wire frame mode.

Wheeland Rims -

Now i have checked to WHEEL AND RIMS,There have present some tripples cons. Need to remove

First isolate wheel and rims properly

Now i have removed tripple consof both side rims and wheel.checked by wire fare mode

In this way i have remove every single and tripple cons and checked by geometry checked. found single cons ,only in center area which is accepted.

Now topo cleaner has been completed.

Now, i will start for PID region for individual parts.

2. PID CREATION -

I have created individual PID asper requirments, Individual PID name mention below

1.BODY

2.LIGHTS

3.GRILLS

4.RIMS AND TYRES

5.OPTICAL REAR VIEW MIRROR

6.WINDOW

7.SILENCER

8.LOGO

Now all PID creation has been completed, after that not required PID need to be deteted by compressed option.

3. QUALITY CRITERIA-

Now before surface meshing,need to put QUALITY createria

4. SURFACE MESHING

After quality criteria value puting, now it is ready for surface meshing,surface meshing has been done asper given targate length,values are given below

1.BODY - target length 3mm, Min Length - 1mm and MAx Length - 5mm

2.LIGHTS - target length 4mm, Min Length - 2mm and MAx Length - 6mm

3.GRILLS - target length 1mm, Min Length - 0.25mm and MAx Length - 3mm

4.RIMS AND TYRES - target length 2mm, Min Length - 0.5mm and MAx Length - 4mm

5.OPTICAL REAR VIEW MIRROR - target length 2mm, Min Length - 0.5mm and MAx Length - 4mm

6.WINDOW - target length 2mm, Min Length - 0.5mm and MAx Length - 4mm

7.SILENCER - target length 3mm, Min Length - 1mm and MAx Length - 5mm

8.LOGO - target length 1mm, Min Length - 0.25mm and MAx Length - 3mm

Now I have completed all surface meshing.

Now i will creat other side of the parts by the symetry option.

Now i will creat wind tunel and check the dimension of the full body.Its near about 1300mm

Wind tunel value will be 5X of total length from front, 6X of total length from rear, 3X of total length from Top, X of total length from side surface and for bottom aill be minium distance

NOw i will creat points by relatevies option.

Now points has been created, points has been connected by curves, after thats by the curvers, surface will be created

Now wind tunel has been created.

5. WIND TUNEL SURFACE MESHING -

After creating of wind tunel, need to be creating surface meshing, and also different PID region for wind tunel 6 sides.

For top surface Target length - 100, MIn 80mm and MAx - 120

Bottom Surface - Target length - 20, MIn - 15 and MAx - 25

And for side surface - Target length will gardually increase 20 to 100 so thats why there have no MIn and MAx value.

6.VOLUMETRIC MESHING

After completeing surface meshing, i have doing for volumetric meshing

I have deleted 2 to 8 auto detected volume except 1 no.

1 nos. is total area of wind tunel along with car model.

After that for volume select REMESH.

Fill has nt uplodaded,trying several times. But it cant be.