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Table of Contents

• 1. Tutorials
  • 1.1. hub extrusion
  • 1.2. hemisphere
  • 1.3. hull cone
    • 1.3.1. Introduction
    • 1.3.2. Creating Connectors on the Hull
  • 1.4. Hexa Blade
  • 1.5. wing/sailplane
  • 1.6. wind energy
  • 1.7. propeller, impeller
  • 1.8. Setting Unstructured Domain and Block Defaults
  • 1.9. O grid airfoil
  • 1.10. Resolving the Wake
  • 1.11. unstructured 2d domain form 2d surface (quilt) database
  • 1.12. hybrid wind turbine
  • 1.13. unstructured 3D block from domain(2d mesh)
    • 1.13.1. pick a domain to add to the first face. the first face should be the outer face and must be a closed face
  • 1.14. Toggling Visibility of Various Entity Types
  • 1.15. growth ratio on connector
  • 1.16. split entities
  • 1.17. Dimension Connectors From Spacings

1 Tutorials

 

1.1 hub extrusion

https://www.youtube.com/watch?v=kPpeQ7UO_1M

1.2 hemisphere

Here the APDL script: finish /clear !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! PARAMETERS !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! GEOMETRY *set, r, 0.2 *set, perc_r, 0.50 *set, thickness, 0.001 ! ! MESH *set, ele_numbraddir, 5 *set, ele_numbcircdir, 10 ! ! MATERIAL *set, E, 130000. *set, nu, 0.33 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! SETTINGS !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! /pnum, kp, 1 /pnum, line, 1 /pnum, area, 1 ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! PREPROCESSING !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! /PREP7 ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! MATERIAL !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! mptemp,,,,,,,, mptemp, 1, 0 mpdata, ex, 1, , E mpdata, prxy, 1, ,nu ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! GEOMETRY !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! ! k, 1, 0, 0, 0 k, 2, 0, -r, 0 circle, 1, r, 2, , 90, 1 arotat, 1, , , , , , 1, 4, 45 nummrg, all, , , , low k, 6, perc_r*r, 0, 0 k, 7, perc_r*r, 0, 2*r k, 8, 0, perc_r*r, 0 k, 9, 0, perc_r*r, 2*r l, 6, 7 l, 7, 9 l, 8, 9 l, 8, 6 al, 4, 5, 6, 7 asba, 1, 2 numcmp, all lesize, 5, , , ele_numbcircdir lesize, 6, , , ele_numbcircdir lesize, 1, , , ele_numbraddir lesize, 4, , , ele_numbraddir cskp, 11, 0, 1, 5, 4, 1, 1 csys, 11 arsym, z, all, , , , 0, 0 nummrg, all, , , , low csys, 0 arsym, x, all, , , , 0, 0 nummrg, all, , , , low arsym, y, all, , , , 0, 0 nummrg, all, , , , low ! adele, 3 adele, 7 al, 3, 9, 18, 7 ldele, 8 ! adele, 1 adele, 9 al, 17, 21, 4, 3 ldele, 2 ! adele, 11 adele, 15 al, 29, 35, 26, 17 ldele, 25 ! adele, 5 adele, 13 al, 31, 29, 7, 13 ldele, 11 nummrg, all, , , , low lesize, 3, , , ele_numbraddir lesize, 7, , , ele_numbraddir lesize, 29, , , ele_numbraddir lesize, 17, , , ele_numbraddir ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! MESHING !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!! et, 1, shell281 keyopt, 1, 1, 0 keyopt, 1, 8, 0 keyopt, 1, 9, 0 keyopt, 1, 10, 0 r, 1, thickness amesh, all nummrg, node, , , , low numcmp, all eplot ! CHECKING FOR MESH GAPS !/edge, 1, 1 !/device, vector, 1 ! /eof https://www.researchgate.net/post/How_does_one_mesh_a_solid_shell_hemisphere_in_hexdominant_environment_either_by_sweep_or_mapped_meshing_in_ANSYS_APDL

1.3 hull cone

https://www.youtube.com/watch?v=KMDarWx9RkU 0:00:00 - 1.3.1 0:02:35 - 1.3.2 0:11:00 - Smoothing Hull Domains with Elliptic Solver 0:17:00 - Create Topology for Hull Blocks with Surfaces and Connectors 0:34:00 - Assemble Hull Blocks (O-O-H topology) 0:40:40 - Improve Quality at Sharp Stern Point 0:47:20 - Create Topology for Farfield Blocks 0:57:45 - Use Bezier Curves for Complex Block Topologies 1:01:35 - Assemble Farfield Blocks (C-O-H topology) 1:08:55 - Tips for Improving Quality on Complex Domains 1:17:05 - Clean up and Organization 1:20:35 - Examine the Final Mesh 1:23:02 - Closing Comments

1.3.1 Introduction

1.3.2 Creating Connectors on the Hull

1.4 Hexa Blade

Highlight Steps:

1. blade surface mesh (domain) domain on database, cluster on tip, root, LE, TE
2. Blade domain normal extrude
3. Periodic Boundary domain mesh
4. Split block
5. add connector, assemble shroud and hub domains
6. Normal extrude >> blade Boundary extrusion
7. Elliptical solver >> smoothing mesh

>> Multiblock Structured Mesh for a High Stagger Angle Axial Rotor https://www.youtube.com/watch?v=ziAyzWjyZnw https://www.youtube.com/watch?v=OCF70TGwMA8 http://www.pointwise.com/workshops/2015-11-Germany/Strategies-Multiblock-Structured-Meshing-Turbine-Blades.html https://www.youtube.com/watch?v=y-TuNk_3y_o

1.5 wing/sailplane

Automatically create unstructured quad-dominant surface meshes Extrude flow-aligned, hex-dominant boundary layer resolved cells using T-Rex Easily generate shapes to define farfield boundaries and sources Define off-body volumetric refinement regions using sources http://www.pointwise.com/webinars/2016-12/Unstructured-Quad-Hex-Meshing-Using-Pointwise.html

1.6 wind energy

http://www.pointwise.com/wind-energy/

1.7 propeller, impeller

hybrid surface mesh: hexa T-rex Grigoriev, Mikhail, et al. "Higher Order Finite Element Meshes for Centrifugal Impeller Blade Analyses Using Pointwise." ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014 http://www.pointwise.com/theconnector/2014-May/Simulation-Unsteady-Propeller-Blade-Loads-Using-OpenFOAM.html

1.8 Setting Unstructured Domain and Block Defaults

https://www.youtube.com/watch?v=Paj-wIGafPA To use preset defaults setting, save the settting: > file/save enviroment as >

1.9 O grid airfoil

https://www.youtube.com/watch?v=SwLkbrZMYMo

1.10 Resolving the Wake

1.11 unstructured 2d domain form 2d surface (quilt) database

create connector setup number of nodes and distribution function on connector create domain using "domains on database entities"

• The Connectors on Database Entities and Domains on Data-base Entities commands require a default connector Dimension or Average Δs be set before they can be used.

1.12 hybrid wind turbine

https://www.youtube.com/watch?v=KOvWlgBEzo4

1.13 unstructured 3D block from domain(2d mesh)

Create/assemble special/block Select one face and then Select/select all adjacent (C+S+A) Select all faces composing the block(3d mesh) initialize >How to Create an Unstructured Block with an Internal Face

• orange arrow implies the domain is open

1.13.1 pick a domain to add to the first face. the first face should be the outer face and must be a closed face

1.14 Toggling Visibility of Various Entity Types

view

1.15 growth ratio on connector

keywords: distribution fucntions

1.16 split entities

C+Q edit/split

From https://www.youtube.com/watch?v=o9KGvYUYReM

1.17 Dimension Connectors From Spacings

• Goal: dimension a set of connectors based on prescribed beginning, ending, and max allowable spacing between grid point parameters.

Created: 2021-07-09 周五 11:17

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