NNX09CC86P SBIR Review, Presented to NASA, July 7 th , 2009 OpenVSP Workshop 2017 Aug. 30 th – Sep. 1 st 1 Empirical Systems Aerospace, Inc. www.esaero.com OpenVSP & VSPAERO Vortex Lattice Method GUI Basics Presented by: Nick Brake Empirical Systems Aerospace, Inc.
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
1
Empirical Systems Aerospace, Inc. www.esaero.com
OpenVSP & VSPAERO
Vortex Lattice Method GUI Basics
Presented by:
Nick Brake
Empirical Systems Aerospace, Inc.
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
2
Empirical Systems Aerospace, Inc. www.esaero.com
Agenda
• Introduction
• OpenVSP \ VSPAERO Integration
• GUI Walkthrough
• Viewing Results (Results Manager, VSPViewer)
• Exporting Results
• Basic Workflow
• Hands-on Walkthrough
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
3
Empirical Systems Aerospace, Inc. www.esaero.com
Introduction – VLM Basics
Goal
• Intuitive interface between OpenVSP & VSPAERO
Features
• Control of all settings that impact solution quality & speed
• Geometry preview*
• Immediate plotting of results
• Ability to export data
• Ability to automate
Geometry Preview
(New)
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
4
Empirical Systems Aerospace, Inc. www.esaero.com
Integration Overview (VLM Only)
Prior v3.8
- Mostly one directional
workflow
- Provided setup
customization through
read/save setup
- Viewer provided all
visualization
*_DegenGeom.vspaero
*_DegenGeom.adb
*_DegenGeom.adb.cases
OpenVSP
(vsp.exe)
VSPAERO
(vspaero.exe)
VSPAERO Viewer
(vspviewer.exe)
*_DegenGeom.csv
*_DegenGeom.vspaero
*_DegenGeom.history
*_DegenGeom.lod
*_DegenGeom.stab
API
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
5
Empirical Systems Aerospace, Inc. www.esaero.com
ResultsMgr /
Plotting
*_DegenGeom.adb
*_DegenGeom.adb.cases
Integration Overview (VLM Only)
OpenVSP
(vsp.exe)
VSPAERO
(vspaero.exe)
VSPAERO Viewer
(vspviewer.exe)
*_DegenGeom.csv
*_DegenGeom.vspaero
*_DegenGeom.history
*_DegenGeom.lod
*_DegenGeom.stab
*_DegenGeom.polar
*_DegenGeom.fem
API (AnalysisMgr)V3.8 v3.9
- File format update
- Batch mode (internal
sweeps)
- New output files:
*.adb.cases, *.polar,
*.fem files
- API access through
AnalysisMgr
- Added ResultsMgr
V3.9 v3.13.2
- Full control of *.vspaero
file (v3.12)
- Rotor definitions
- Control groups
*.polar and *.fem files are not
currently read by OpenVSP
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
6
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Comparison
3.11.0 3.12.0
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
7
Empirical Systems Aerospace, Inc. www.esaero.com
GUI – Overview Tab (1/2)
Case Setup
• Analysis methods: VLM, Panel
• Selectable Geometry Set
• Preview Geometry allows
visualization of plate geometry
Ref Aero, Lengths
• Manual or From Model (wing
geom)
Moment Reference Position
• Manual or Calc CG
Geometry Preview
(New)
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
8
Empirical Systems Aerospace, Inc. www.esaero.com
GUI – Overview Tab (2/2)
Flow Condition
• Alpha, Beta in degrees
• Ability to run simple array of
points
Control Group Deflections*
• Enable\disable control groups
• Set deflection angle (deg)
*See “VSPAERO GUI Advanced” presentation
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
9
Empirical Systems Aerospace, Inc. www.esaero.com
GUI – Solver Console & Execution
Solver Console
• Scrolling solver output
• Solver console always visible
• “Pretty Command” at the top
Execution
• Single “Launch Solver”
• Access to Results Manager Plot
Screen & VSPAERO Viewer
Pretty Command
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
10
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Overview – Results Manager
Data
Selection
Flow
Condition
Selection
Legend
Manual
axis limits
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
11
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Overview – Results Manager
Sweep tab plots
across the result
entries
Multiple data
selection is
supported for X or
Y, (not both)
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
12
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Overview – Results Manager
Convergence tab
plots the *.history
file
highlights changes
across iterations
optional log10() of
residual
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
13
Empirical Systems Aerospace, Inc. www.esaero.com
VSPViewer
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
14
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Overview – Export
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
15
Empirical Systems Aerospace, Inc. www.esaero.com
GUI Overview – Basic Workflow
1. Analysis VSPAERO
2. Select options
3. [Optional] Preview VLM Geom
4. Launch/Kill Solver
5. View & Export Results– Show ResultsMgr
– Launch Viewer
– Export to *.csv
2
5
1
4
6
3
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
16
Empirical Systems Aerospace, Inc. www.esaero.com
Hands On
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
17
Empirical Systems Aerospace, Inc. www.esaero.com
Tips & Tricks
• Exact alignment of degenerate surfaces can cause issues
– Use “Preview VLM Geometry”
– Replace rounded rectangles with ellipses
• Adjusting geometry or tessellation slightly can alleviate mesh and solution issues
• Start simple– Few wake iterations
– Simple geometries
• Several wiki pages covering VSPAERO
• Post questions, issues to the Google group
NNX09CC86P SBIR Review, Presented to NASA, July 7th, 2009OpenVSP Workshop 2017 Aug. 30th – Sep. 1st
18
Empirical Systems Aerospace, Inc. www.esaero.com
Contact Information
Nick Brake
ESAero
Related Documents
