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Transcript
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. HEAT TRANSFER 5.7 • Training Manual March 15, 2001 Inventory #001445 1-2 • Chapter 1 - Introduction • 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 – – – – – 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 March 15, 2001 Inventory #001445 1-3 • 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 HEAT TRANSFER 5.7 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 March 15, 2001 Inventory #001445 1-4 • 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 • Chapter 5 - Transient Analysis – – – – Governing Equations Differences Compared to Steady-State Analysis Reviewing Transient Results Workshop 4 - Transient Thermal Analysis of a Transistor March 15, 2001 Inventory #001445 1-5 • 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 March 15, 2001 Inventory #001445 1-6 • Training Manual Chapter 7 - Additional Convection Options and Simple Thermal/Flow Elements – – – – – – – 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 HEAT TRANSFER 5.7 Overview of Chapters and Topics Covered March 15, 2001 Inventory #001445 1-7 • Training Manual 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 • Chapter 9 - Phase Change – Basic Concepts/Terminology – Solving Phase Change in ANSYS – Phase Change Example Problem - Flywheel Casting Analysis March 15, 2001 Inventory #001445 1-8 • Training Manual 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 • 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 • Appendix to Workshop 2 - Step-by-step Instructions March 15, 2001 Inventory #001445 1-9 Related Seminars & Training Introduction to ANSYS, Part II • CFD Analysis • Advanced CFD • Electronics Packaging HEAT TRANSFER 5.7 • Training Manual March 15, 2001 Inventory #001445 1-10 Other Sources of Information ANSYS On-Line Documentation: – Workbook, Verification Manual, Thermal Analysis Guide, Coupled Field Analysis Guide • ANSYS Tutorials • ANSYS Reference Articles and White Papers • ANSYS Solutions magazine • Training manuals from related ANSYS courses • ANSYS Conference Proceedings • ANSYS website: http://www.ansys.com HEAT TRANSFER 5.7 • Training Manual March 15, 2001 Inventory #001445 1-11