An introduction to pseudo transients and how they can be used to calculate steady-state solutions in CFD (Part 2). Timestamps:
0:00 Introduction
1:00 Recap
3:28 Length Scale Calculation
12:10 Conservative vs Aggressive
14:26 Solids Velocity Scale
19:21 Internal Energy
24:05 Propagation Speed
25:16 Thermal Diffusivity
30:16 Volume Averaging
33:31 Units
34:31 Summary
37:02 Outro
#pseudoTransient #fluidmechanics101 #cfd
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Some useful references
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1. Ferziger & Peric, 'Computational Methods for Fluid Dynamics', 3rd Edition, Springer-Verlag, Berlin, Heidelberg, New York, 2002.
www.amazon.co.uk/Computationa... [Page 118, 149]
2. ANSYS CFX Solver Theory Guide
Chapter 1: Basic Solver Capability Theory
Section 1.10: Automatic Timescale calculation
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Want to learn more?
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Grab a copy of my CFD Fundamentals Course (for beginners):
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Learn how to write your own CFD code in MATLAB and python (for intermediates):
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Disclaimer
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The methods, algorithms, equations, formulae, diagrams and explanations in this talk are for educational and demonstrative purposes only. They should never be used to analyse, design, accredit or validate real scientific / engineering / mathematical structures and flow systems. For such applications, appropriate trained, qualified and accredited (SQEP) engineers / scientists should be consulted along with the appropriate documentation, procedures and engineering standards. Furthermore, the information contained within this talk has not been verified, peer reviewed or checked in any way and is likely to contain several errors. It is therefore not appropriate to use this talk itself (or any of the algorithms, equations, formulae, diagrams and explanations contained within this talk) as an academic or technical reference. The reader should consult the original references and follow the verification and validation processes adopted by your company / institution when carrying out engineering calculations and analyses. Fluid Mechanics 101 and Dr. Aidan Wimshurst are not accountable or liable in any form for the use or misuse of the information contained in this talk beyond the specific educational and demonstrative purposes for which it was intended.
Негізгі бет Ғылым және технология [CFD] Pseudo-Transients for Steady State CFD (Part 2) - Length and Velocity Scales
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