Week 3 Challenge : CFD meshing on Turbocharger

CFD meshing on Turbocharger

Aim

For the given model, check for the geometrical errors to make appropriate volumes. Create and assign PIDs as shown in the video. Perform surface mesh with the given target lengths as per PIDs.

1. Blade stage-1 = 1 mm
2. Blade stage-2 = 1 mm
3. Impeller = 2 mm
4. Shaft rotor = 1 mm
5. Turbo casing = 5 mm
6. Compressor casing = 5 mm
7. Inlet casing cover = 5 mm

Perform Volumetric mesh for the required volumes as shown in the videos.
Write a detailed report on your surface meshing & Volume meshing process.

Procedure

1) import the geometry from the file & to find the unwanted hotpoint by wireframe mode to see single and triple coons in the geometry and DRAW mode --------> PID to see the overlapping surface present in the geometry

1) To delete the overlaping surface ENT ------> NOT ------> select important & surface isolated and delete the extra surface by Delete face

2) To delete extra face present inlet region CONS ----> PROJECT ------> SELECT first as THE COONS second SELECT the FACE which we want to project it

click MIDDLE BUTTON delete it and do TOPO on the surface

3) surface missing the turbine casing INSERT HOTPOINTS on missing area TRANSFORM ---------> SELECT ENTITIES (select the face to copyit)------> (copy entities)SYMMETRY ----> MIRROR 3 POINT PLANE

COPY ENTITIES (and select the hot points) -------> TRASFORMATION OPTION to create it ...

and Fill hole with FILL HOLE option

4) peneteration issue in the surface FACE ------> INTERSECT -----> SELECT the FIRST (penetration sruface) and SECOND (the body) and intersect it and delete the extra surface

5) TRIPLE CONS in side the compressor blade shaft triple cons present inside the shaft delete it by FACE DELETE

CREATINNG PID,S FOR EACH COMPONETS AND GIVE REQUIRED PEREMETER LENGTH

MESH ----> PERIMETER ------> LENGTH -------> 1) PERIMETER ---> 2) MACROS

PID NAMES	PERIMETER LENGTH
COMPRESSOR CASING	PERIMETERS = 5 MACROS =5
COMPRESSOR INLET & OUTLET	PERIMETERS = 5 MACROS =5
BLADE STAGE 1 & 2	PERIMETERS = 1 MACROS =1
SHAFT ROTOR	PERIMETERS = 1 MACROS =1
	PERIMETERS = 5 MACROS =5
TURBINE IMPELLER	PERIMETERS = 2 MACROS =2
TURBINE INLET CASING	PERIMETERS = 5 MACROS =5
TRUBINE INLET AND OUTLET	PERIMETERS = 5 MACROS =5

PIDS

MESHING

MESH -----> MESHGENERATION ----> SPOT MESH

MESHING	MEASURE AND FREEZEIN THE COMPONENT

V. MESH

VOLUME ------> DEFINE

1) select the inner volume for volume mesh

2) delete unwanted volume

inner volume of the compressor

inner volume of the turbine

Meshed as Tetra CFD

Learning Outcomes

• Geometry cleanup
• Surface meshing
• Volume meshing

RESULT

volume meshing completed ....

work file

https://drive.google.com/file/d/1kENfH5-gn-6Dy2XWuCFYg57HAE18AJcT/view?usp=sharing