Absolute Beginners Guide To Cfd Simulation In Ansys

在本课程中，您将从头开始学习您的第一个 CFD 模拟。我们将使用波音 747-400 简化模型来学习 ANSYS 工作台中的重要 CFD 模块。我们将使用 ANSYS Spaceclaim 进行几何清理并为全飞机（波音 747-400）创建域。我们还将创建将用作影响体 (BOI) 的实体，以在尾流区域进行网格细化。之后使用相同的几何和域，我们将在 Workbench Grid 生成应用程序中创建混合网格。我们将创建棱镜层来捕获边界层流动特征，这对于我们的例子中的空气动力学流动非常重要。我们还将使用影响体 (BOI) 在尾流中细化网格。然后，该网格将用于在 ANSYS Fluent 中设置可压缩流动仿真。您将提供适当的比例因子，选择适当的湍流模型，启用能量方程，使用理想气体 las 作为密度，根据马赫数特别在入口处定义边界条件，定义参考条件，包括参考面积和参考长度。您还将设置用于监控阻力和升力系数的定义报告定义。解决方案将使用混合方法进行初始化。我们还将设置求解器，以便我们可以使用 Fluent 中的“解决方案转向”选项加速解决方案收敛。最后，我们将点击计算选项，使用 ANSYS Fluent 中提供的迭代求解器方案来求解 CFD 仿真。一旦解决方案基于 Cd 和 CL 图收敛，我们将分析流场，包括 Cp 图、向量图、压力等值线图和马赫数。我们还将绘制路径线以查看流如何与飞机机身相互作用。最后，我们将找出阻力和升力系数。本课程更有趣的部分是，您还将通过为完整模型提供 8 度的迎角来修改整个飞机的几何形状。您将使用零迎角 (AoA) 的先前案例的设置快速更新网格，并在 Fluent 中运行模拟。我们将再次在 Fluent 中解决该问题，并讨论结果与零 AoA 情况的差异。

A first course in learning everything in CFD from scratch without any prior knowledge of simulation

Last updated 7/2022
MP4 | Video: h264, 1280×720 | Audio: AAC, 44.1 KHz
Language: English | Size: 1.76 GB | Duration: 1h 34m

What you’ll learn

Learn CFD simulation from scratch in ANSYS workbench environment
Clean geometry and create domain in ANSYS Spacelcaim
Create highly quality mesh in Workbench meshing
Quickly run CFD simulation in Fluent for full aircraft
To setup compressible flow problem and accelerating solution convergence for density based solver in Fluent
Quickly modify geometry of full Aircraft by providing 8 deg AoA using move command
Updating mesh and solution in single click
Analyze CFD results in Fluent post processing tools and getting contour plot, vector plots, path lines, Cp plot etc.

Requirements

You will learn every thing from scratch. So no prior knowledge of CFD is needed for this course.
ANSYS 2022 R1 (professional) installed on your computer for using files given with course.
You would also need a decent computer with i5 or i7 processor and atleast 8-16 GB RAM

Description

In this course you will learn your first CFD simulation from scratch. We will use Boeing 747-400 simplified model to learn important CFD modules in ANSYS workbench. We will use ANSYS Spaceclaim for geometry cleaning and creating domain for full Aircraft (Boeing 747-400). We will also crate body that will be used as body of influence (BOI) for mesh refinement in wake region. After that using same geometry and domain, we will cerate hybrid mesh in Workbench Grid generation app. We will create prism layers for capturing boundary layer flow features which are very important for aerodynamic flows such in our case. We will also refine mesh in wake using body of influence (BOI). This mesh will be then used for setting up compressible flow simulation in ANSYS Fluent. You will provide proper scaling factor, choosing appropriate turbulence model, enabling energy equation, using ideal gas las for density, defining boundary conditions specially at inlet in terms of Mach number, defining reference condition including reference area and reference length. You will also setup defining report definitions for monitoring drag and lift coefficients. Solution will be initialized using hybrid method. We will also setup solver so that we can accelerate solution convergence using “solution steering” option in Fluent. Finally we will hit the calculate option to solve CFD simulation using iterative solver schemes available in ANSYS Fluent. Once solution is converged based on plots of Cd and CL then we will analyze the flow field including Cp plot, vectors plots, contours plots for pressure and Mach number. We will also draw path lines to see how flow is interacting with Aircraft body. Finally we will find out drag and lift coefficients. Once more interesting part of this course is that, you will also modify the geometry of whole aircraft by providing angle of attack of 8 deg to full model. You will quickly update the mesh using settings for the pervious case with zero angle of attack (AoA), and run simulation in Fluent. We will again solve the problem in Fluent and discuss the differences in results as comparison to case with zero AoA.

Overview

Section 1: Introduction

Lecture 1 Introduction and geometry and domain generation in ANSYS Spaceclaim

Lecture 2 Creating high quality mesh of full aircraft in ANSYS meshing

Lecture 3 Running simulation of full Aircraft at zero AoA

Lecture 4 Modifying AoA , creating mesh and again running simulation in Fluent

Lecture 5 How to use course material

Course is intended to students who are just starting to learn their first CFD simulation.