Labyrinth Seal Project Geometry Creation and CFD Setup ...
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Caterpillar: Confidential Green Labyrinth Seal Project Geometry Creation and CFD Setup Automation Intern Exit Presentation Heat Transfer & Secondary Flow Joseph Graff 9/24/2020
Transcript of Labyrinth Seal Project Geometry Creation and CFD Setup ...
Caterpillar: Confidential Green
Labyrinth Seal ProjectGeometry Creation and CFD Setup AutomationIntern Exit Presentation
Heat Transfer & Secondary FlowJoseph Graff
9/24/2020
Caterpillar: Confidential Green
About Me
Caterpillar: Confidential Green
About Me Education:
• Ph.D. Candidate at University of California Davis• Development of a high fidelity fully coupled Fluid Thermal
Structure interaction code specialized for turbomachinery.
• BSME and BSAE from New Mexico State University
Engineering Experience:• Structural analyst with Raytheon Phalanx and Sea RAM.
• Research assistant at Army High Performance Computational Research Lab at Stanford University- X48B blended wing body.
• Engineering design intern with Raytheon- Patriot missile.
NASA Stage67 Static Pressure contours
1 ½ Stage Film Cooled Turbine With Thermal Barrier Coating
2D and 3D Cylinder Flag FSI Validation Case
Caterpillar: Confidential Green
Agenda
• Labyrinth Seal Background
• Labyrinth Seal Designer (LSD) Tool
• Tutorial
• Future work
• Internship feed back
From Vermes [1]
Process Map
1D Flow Solver
Labyrinth Seals Analysis Process Map
Thermal Model
Durability/ Lifing
Area of Improvement
From Vermes [1]
Process Map
1D Flow Solver
Labyrinth Seals Analysis Process Map
Thermal Model
Durability/ Lifing
Area of Improvement
Model Calibration Using Test Data
Test Rig CFD Analysis
Data-match/ Compare
CFD and Test Data Agree?
Yes No
OPPORTUNITY FOR AUTOMATION
Process Map
1D Flow Solver
Labyrinth Seals Analysis Process Map
Thermal Model
Durability/ Lifing
Model Calibration Using Test Data
Test Rig CFD Analysis
Data-match/ Compare
CFD and Test Data Agree?
Yes No
OPPORTUNITY FOR AUTOMATION
Tasks which can be automated: 1. Geometry creation2. Geometry preprocessing 3. CFD Model setup 4. Generate mesh5. Run simulation
From Vermes [1]
Process Map
1D Flow Solver
Labyrinth Seals Analysis Process Map
Thermal Model
Durability/ Lifing
Area of Improvement
Model Calibration Using Test Data
Test Rig CFD Analysis
Data-match/ Compare
CFD and Test Data Agree?
Yes No
OPPORTUNITY FOR AUTOMATION
Tasks which can be automated: 1. Geometry creation2. Geometry preprocessing 3. CFD Model setup 4. Generate mesh5. Run simulation
Internship Project Scope:
Develop a tool which automates the process of geometry creation, and Computational Fluid Dynamics (CFD) model setup and simulation for a general labyrinth seal (no honeycomb).
Caterpillar: Confidential Green
Software UsedEngineering software:
• Automated geometry creation with CAD NX 12.0, using NXOpen.
• Automated CFD model setup and run with Star-CCM+.• Macros written in Java.
Software created: • Labyrinth Seal Designer (LSD) tool, written by Mauro Robbe and Joe Graff.
Caterpillar: Confidential Green
Labyrinth Seal CFD Analysis ProcessGeometry creation
CFD Model Setup and Run
Design dimensions
Create the geometry using CAD
Preprocess CAD for CFD
analysis
Import CAD Geometry to Star-CCM+
Model setup Create Mesh
Run simulation Run
Monitoring
Post Processing and CFD model calibration
External support for geometry creation
Caterpillar: Confidential Green
Labyrinth Seal CFD Analysis ProcessGeometry creation
CFD Model Setup and Run
Design dimensions
Create the geometry using CAD
Preprocess CAD for CFD
analysis
Import CAD Geometry to Star-CCM+
Model setup Create Mesh
Run simulation Run
Monitoring
Post Processing and CFD model calibration
Base Simulation model, controlled by Java macros
Automated Geometry Creation
With automation, this takes seconds
With automation, this takes seconds
Caterpillar: Confidential Green
Labyrinth Seal CFD Analysis ProcessGeometry creation
CFD Model Setup and Run
Design dimensions
Create the geometry using CAD
Preprocess CAD for CFD
analysis
Import CAD Geometry to Star-CCM+
Model setup Create Mesh
Run simulation Run
Monitoring
Post Processing and CFD model calibration
Labyrinth Seal Designer (LSD) Tool
Caterpillar: Confidential Green
Labyrinth Seal CFD Analysis ProcessGeometry creation
CFD Model Setup and Run
Design dimensions
Create the geometry using CAD
Preprocess CAD for CFD
analysis
Import CAD Geometry to Star-CCM+
Model setup Create Mesh
Run simulation Run
Monitoring
Post Processing and CFD model calibration
Labyrinth Seal Designer (LSD) ToolResult: Hours of time savings per geometry
