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🧠 “One must be sane to think clearly, but one can think deeply and be quite insane.” - Nikola Tesla

Apr 07, 2024

🎙️Becoming a CFD Engineer with Kanchan Garg from SimScale

💻 The 3D Mesh Resolution Threshold - 5k Points is All You Need!

What’s a minimum threshold resolution for 3D models that still allows accurate prediction of physical properties in simulations? This is especially crucial in fields like aerodynamics or structural design, where the minimal level of detail required for a 3D model should still deliver reliable estimations.

To answer this, we sought to determine the resolution threshold at which 3D models remain effective. By using our API to analyze the impact of 3D model resolution on computational fluid dynamics (CFD) simulation outcomes, we performed experiments assessing aerodynamic properties using OpenFOAM. Our goal is to figure out the least detailed resolution that still provides reliable drag coefficient estimates, comparable to those obtained from high-resolution models.

Let’s Find Out

💻 Machine Learning for Fluid Dynamics

🚀 𝗙𝗮𝘀𝘁-𝗧𝗿𝗮𝗰𝗸 𝗠𝗶𝗰𝗿𝗼𝘀𝗰𝗼𝗽𝗶𝗰 𝗜𝗻𝘃𝗲𝘀𝘁𝗶𝗴𝗮𝘁𝗶𝗼𝗻𝘀 𝘄𝗶𝘁𝗵 𝗔𝗜

Microstructure determines the properties of a material. Understanding how microstructure affects properties plays an important role in disciplines such as chemistry, materials science, and engineering.

With pySimAI, we automated a trained SimAI model to rapidly make predictions to capture stress field on the microstructure and the stress-strain curve. Here we predicted 40 uniformly spaced strain steps for an unseen microstructure.

The animations compare the SimAI stress prediction with Ansys crystal plasticity simulation. We see great agreement on the two stress-strain curves and the stress field predictions properly captured the grains of high stress.

Credits: Junyan He, Senior Application Engineer at Ansys.

Free Ansys Course

💦 NASA - Introduction to Computational Fluid Dynamics Course

This series will help participants develop an understanding of computational fluid dynamics and provide an opportunity to practice numerical solution techniques as applied to the equations governing fluid mechanics and heat transfer.

Access Full Course

📚Book of the Week

The Lattice Boltzmann Method: Principles and Practice

This book is an introduction to the theory, practice, and implementation of the Lattice Boltzmann (LB) method, a powerful computational fluid dynamics method that is steadily gaining attention due to its simplicity, scalability, extensibility, and simple handling of complex geometries. The book contains chapters on the method's background, fundamental theory, advanced extensions, and implementation.

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