Download Chapter 1: Introduction

Chapter 1
Introduction
Prerequisites
Prerequisites for the Heat Transfer Seminar include:
– Successful completion of the Introduction to ANSYS Part 1 Training
Course or equivalent ANSYS experience.
– Bachelors Degree in Engineering or Science, or equivalent knowledge
of Heat Transfer.
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Chapter 1 - Introduction
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Chapter 2 - Fundamental Concepts
– Nomenclature
– Symbols and Units
– Modes of Heat Transfer
– Conservation of Energy (First Law of Thermodynamics)
Training Manual
HEAT TRANSFER 5.7
Overview of
Chapters and Topics Covered
– Governing Differential Equation for Transient Conduction
– Finite Element Approach
– Fundamental Characteristics of Finite Element Thermal Solutions
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What makes a heat transfer analysis nonlinear?
When do you need to define specific heat and density?
Comparison to Structural Analysis
Element Library Overview: Capabilities and Limitations
Workshop 1 - Basic Heat Transfer Analysis
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Training Manual
Chapter 3 - Steady-State Heat Transfer
– Governing Equation for Steady-State Heat Transfer
– Types of Thermal Boundary Conditions
– Thermal Analysis Template
– GUI and ANSYS commands
– Details of each step in the analysis process, illustrated via an example
problem: Thermal Analysis of a Steel Tube with Fins
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Overview of
Chapters and Topics Covered
– Preprocessing- Building the Model
– In the Solution Processor
– Postprocessing - “Postprocessing 101”
– Workshop 2 - Steady-State Thermal Analysis of a Transistor
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Chapter 4 - Additional Considerations For Nonlinear Analysis
– Time, Loadsteps, Substeps and Equilibrium Iterations
– Convergence Criteria
– Starting Temperature
– Stepped or Ramped Loads
– Other Nonlinear Options
Training Manual
HEAT TRANSFER 5.7
Overview of
Chapters and Topics Covered
– Output Control Options
– Monitoring/Reviewing the Nonlinear Solution
– Workshop 3 - Nonlinear Thermal Analysis of a Transistor
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Chapter 5 - Transient Analysis
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Governing Equations
Differences Compared to Steady-State Analysis
Reviewing Transient Results
Workshop 4 - Transient Thermal Analysis of a Transistor
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Chapter 6 - Complex, Time and/or Spatially Varying Boundary
Conditions
– Tabular Thermal Boundary Conditions (Loads)
– Primary Variables
– User-Defined Independent Variables
– Typical Uses and Applicability
– Advantages and Disadvantages
Training Manual
HEAT TRANSFER 5.7
Overview of Chapters and Topics
Covered
– Defining Keytimes and Output Times
– Review of ANSYS Tables and Arrays
– ANSYS Function Tool – Generator and Loader
– Workshop 5 - Transient Exercise with Tabular Loads
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Chapter 7 - Additional Convection Options and Simple
Thermal/Flow Elements
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Convection Applied as a Surface Load
Convection Link Elements
Surface Effect Elements
Modeling Contact Resistance
1D Thermal/Flow Elements
User Convection Subroutines
Workshop 6 - Thermal Analysis of a Low Pressure Gas Turbine Case
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Overview of Chapters and Topics
Covered
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HEAT TRANSFER 5.7
Overview of Chapters and Topics
Covered
Chapter 8 - Radiation
– Review of Radiation Concepts
– Basic Definitions
– Radiation Modeling Alternatives
– Radiation Matrix Utility
– Radiosity Method
– Radiation Analysis Examples - Heat Sink Analysis using the Radiation
Matrix Utility, Hidden and Non-Hidden Methods.
– Workshop 7 – Radiation Heat Transfer Using Radiosity Method
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Chapter 9 - Phase Change
– Basic Concepts/Terminology
– Solving Phase Change in ANSYS
– Phase Change Example Problem - Flywheel Casting Analysis
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HEAT TRANSFER 5.7
Overview of Chapters and Topics
Covered
Chapter 10 - Coupled-Field Analysis (with Thermal Stress
Emphasis)
– Direct and Sequential Coupled Fields
– Physics Environments
– Thermal-Stress Analysis
– Workshop 7 - Thermal Stress Analysis of a Steel Tube with Fins
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Chapter 11 – Thermal Contact
– Basic concepts
– Conduction, heat generation, convection, radiation, frictional heating
– Detailed conduction problem with varied thermal contact conductance
– Workshop 9 – Thermal Contact with thermal conduction as a function
of contact pressure
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Appendix to Workshop 2 - Step-by-step Instructions
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Related Seminars & Training
Introduction to ANSYS, Part II
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CFD Analysis
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Advanced CFD
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Electronics Packaging
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Other Sources of Information
ANSYS On-Line Documentation:
– Workbook, Verification Manual, Thermal Analysis Guide, Coupled Field
Analysis Guide
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ANSYS Tutorials
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ANSYS Reference Articles and White Papers
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ANSYS Solutions magazine
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Training manuals from related ANSYS courses
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ANSYS Conference Proceedings
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ANSYS website: http://www.ansys.com
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