How to Create Professional Meshes in STAR-CCM+ | Meshing Mastery – Part 8 | Beginner to Advanced

In this video, you begin a complete STAR-CCM+ Meshing Mastery series, designed to take you from fundamental concepts to professional-grade meshing skills used in real CFD projects.

Part 1 focuses on building a strong foundation for meshing in STAR-CCM+, explaining how the meshing workflow works and how to think like an expert before generating any cells.

By the end of this series (Parts 1–10), you will be able to:

Create high-quality polyhedral and prism layer meshes

Control mesh resolution using Automated Mesh, Default Controls, and Custom Controls

Generate meshes suitable for heat transfer, turbulence, and industrial CFD

Avoid common meshing mistakes that lead to poor convergence or inaccurate results

Confidently prepare meshes for professional simulations and commercial projects

In this video (Part 1):

STAR-CCM+ meshing philosophy and workflow

Automated Mesh overview

Core mesh vs boundary-layer mesh

When and why mesh quality matters

How this series will lead to full meshing mastery

This tutorial is practical, step-by-step, and based on real STAR-CCM+ projects, not simplified academic examples.

Who this series is for:

CFD beginners starting with STAR-CCM+

Engineers who want clean, reliable meshes

Students preparing for industry-level simulations

Anyone aiming for true meshing mastery, not trial-and-error

📌 This is Part 1 of a 10-part Meshing Mastery series
👉 Make sure to subscribe and follow the full playlist to achieve complete mastery.

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In many practical applications, especially when working with complex geometries, you may generate a mesh that is generally acceptable, but still contains a small number of very poor-quality cells.
Even a few low-quality cells can cause serious problems, such as:

Solver divergence
Simulation crash
Failure to reach convergence

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Concept: Removing Problematic Cells

One effective and commonly used solution is to:

Identify cells with unacceptable quality
Remove them from the computational domain

This approach slightly reduces local accuracy, but significantly improves:

Solver stability
Convergence behavior
Overall robustness of the simulation

This technique is widely used in industrial CFD workflows.

---

Accessing “Remove Invalid Cells”

To do this, we work at the region level.

For example, in this case, we focus on the Fins region.

1. Right-click on the region
2. Select Remove Invalid Cells

This opens a dialog where STAR-CCM+ allows you to analyze and remove problematic cells.

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Region Selection

At the top of the window:

You select the region to be checked
Here, we choose the Fins region, meaning only cells inside this region are evaluated

---

Cell Quality Criteria

STAR-CCM+ provides several quality criteria for identifying invalid or poor-quality cells, including:

Face Validity
Cell Quality
Volume Change
Contiguous Cells
And other geometric and numerical checks

Each criterion has a corresponding threshold value that you can adjust.

Master Meshing in STAR-CCM+ | Complete Tutorial Series
STAR-CCM+ Meshing Explained from Zero to Mastery
How to Create Professional Meshes in STAR-CCM+ | Meshing Mastery
STAR-CCM+ Meshing Mastery | Complete Meshing Tutorial

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