Computational Fluid Dynamics

(BMEGEÁTAG26, BMEGEÁTAM05)

2016. spring, 6th practice

Based on the learning material of Dr. Gergely Kristóf (link), created by:

• Tamás Benedek

• E-mail: benedek [at] ara.bme.hu

• Web: www.ara.bme.hu/~benedek/CFD/workbench

• If you have any problem, please don’t hesitate to ask your courseleader or me!

Agenda:

• 1st week: simulation of the flow in an orifice meter

• 2nd week: simulation of a centrifugal pump

• 3rd week: simulation of an exhaust

• 4th week: simulation of an transsonic airfoil

• 5th week: simulation of the buoyancy in a kitchen

• 6th week: individual problem solving

• 7th week: midterm exam

Main rules:

• Don’t use any special character or space! (in the file names,folder names, names of the zones and boundaries, …) TheANSYS can’t handle it.

• Working folder: C:/Work/Neptun_code (Neptun_code =your code)

• The saved files will be deleted when you turn off thecomputers of the CFD lab if you want to continue yourwork, please save it on a flash drive or send it to yourselfattached to an e-mail

Course leaders:

• László Nagy (nagy [at] ara.bme.hu)

•Bendegúz Bak (bak [at] ara.bme.hu)

• Esztella Balla (balla [at] ara.bme.hu)

•Balázs Farkas (farkas [at] ara.bme.hu)

•Péter Füle (fule [at] ara.bme.hu)

•András Tomor (tomor [at] ara.bme.hu)

•Bence Tóth (tothbence [at] ara.bme.hu)

The geometry

Diameter of the pipe: Ød=100mm

Create/Primitives/Cylinder

Create/New plane + create cylinder

Create/New plane + create cylinder

Create /New planeSketching: Duplicate the base circleDraw the revolve axis

Create/Revolve

Create/Revolve

Similar to the former step

From new part

Base mesh

Named selectionsfluid1

fluid2

fluid3

Sizing, Max size=Max Facesize= 7 mm

Insert infaltionGeometry: forthe full body

Boundary: surface of the pipeline

Insert methode: MultiZoneGeometry: the pipelineFree mesh type not aloowedSrc/Trg selection: manualSource: in and outlet surfaces

The mesh should look like on thepictures.

Rake:Surface: Line/Rake

Type: rakeInputs: coordinates of the endpoints

Bruce Willis