C2_WS32-Wingbody_ShellV12

  • 格式:pdf
  • 大小:1.06 MB
  • 文档页数:11

Training Manual
– Select Edit Mesh > Delete Elements and select one of the elements on each surface as shown – Select… up to a curve in Select mesh elements toolbar or “r” on the keyboard to flood-fill all other elements on those two surfaces
Training Manual
• F Force mapped mesh along d h l wing
– Select Mesh > Surface Mesh Setup p – Select 4 leading edge, and 2 thin trailing edge surfaces as shown – Change Mesh method to Autoblock – Apply
– Note the arrow which defines direction from end spacing 1 to end spacing 2 – We want to bias towards 2 (direction of arrow)
• Right mouse select until Geometric 2 appears • Increment with left mouse (over number) to 1.2
Chapter Ch t 3 Shell Meshing – Workshop 3 2 W k h 3.2 Wingbody – F6 Model
Introduction to ANSYS ICEM CFD
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
Training Manual
Node spacing turned off for clarity
• Refine node distribution near the fuselage nose
– Change Curve Mesh Setup Method to General – Select front most curves along fuselage shown – Middle mouse to accept selection – Change Maximum size to 5 – Apply
WS3.2-1
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Create Project / Open Geometry
• File > New Project
– Enter the Wingbody folder – Type Wingbody-shell_mesh – Save
• Flood fills to boundary curves making up loop • Middle mouse or Apply
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
WS3.2-9
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Re Mesh Two Surfaces
• Remesh fuselage surfaces
– Go back to Mesh > Global Mesh Setup > Shell Meshing Parameters – Turn on General > Respect Line Elements
– Still in Dynamic method select Number of nodes and change curve towards middle bottom of wing as shown to 6 (right mouse to decrease) – – – – This will give 32 + 6 -1 (shared node) = 37 nodes Same as parallel ones Better ensuring a mapped mesh Also increase number of nodes along wing tip to more closely match those along leading edge
• Reverse (right mouse on curve) or decrease Bunching ratio number to 1.0 • Bunching law changes to Geometric 1, when the ratio reaches 1 • Left mouse key to increase to 1.2
WS3.2-8
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Delete Mesh
• Delete bad mesh
– Turn off FARFIELD, INLET, OUTLET
• T be able to select mesh behind them To b bl t l t h b hi d th
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
WS3.2-7
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Create Surface Mesh
• Mesh > Compute Mesh > Surface Mesh Only
– Select Geometry > All – Compute • Note bad quality surface mesh in front of fuselage
– Turn off FARFIELD part
Training Manual
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
Training Manual
• File > Geometry > Open Geometry…
– Select F6_complete.tin F6 complete tin – Open
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
– Select Mesh > Curve Mesh Setup
• Change Method to Dynamic • Select Number of nodes • Position cursor on node number next to curve shown • Increment number of nodes with left mouse ke mo se key to 11 (right = decrement) • Change Bunching law to Geometric 1 • Select Bunching ratio and position cursor near the same curve
Set Curve Parameters
• • • •
Training Manual
• Set finer node distribution across leading edge
Turn on all Parts Turn on Curves only Turn on Curve Node Spacing (right mouse select Curves) Zoom toward front of WING where it meets the FAIRING
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
WS3.2-5
Release 12.0 January 2010
Shell Meshing – Wo Copy same distribution to opposing “parallel” edges
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
WS3.2-6
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Set Curve Parameters
• Make number of nodes equal across parallel curves
ANSYS, Inc. Proprietary © 2010 ANSYS, Inc. All rights reserved.
WS3.2-3
Release 12.0 January 2010
Shell Meshing – Workshop 3.2
Surface Mesh Parameters
• Set default Mesh type and Mesh method • Mesh > Global Mesh Setup > Shell Mesh Parameters – Mesh type: All Tri – Mesh Method: Patch Dependent – Set Shell Meshing Parameters section to P h Dependent i Patch D d – Set Ignore size = 0.05 – Apply