Aerodynamic CFD Simulation Training Course by ANSYS Fluent

• The problem numerically simulates Airflow on the Dimpled Rotating Cylinder using ANSYS Fluent software.

• We design the 3-D model with the Design Modeler software.

• We mesh the model with ANSYS Meshing software, and the element number equals 1064903.

• We use the Frame Motion method to define the rotational movement.

• The problem numerically simulates NACA 0012 Airfoil (Compressible Flow) using ANSYS Fluent software.

• We design the 2-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing.

• The model mesh is structured, and 35000 cells have been created.

• We apply a Density-based solver to define the compressible flow.

• We determine the Mach number for the inlet boundary condition.

• The problem numerically simulates Cooling of Airfoil Surface by Lateral Hole Air Inlets using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 582263.

• The Energy Equation is activated to define the cooling process.

• The problem numerically simulates Rotating Disk in a room using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 716870.

• We use the Moving Wall for the disk to define the rotational movement.

• The problem numerically simulates Spoiler Modes Comparison for F1 Car Aerodynamics using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the polyhedral element number equals 450000.

• We aim to compare the open and close modes of the spoiler and observe the difference between the lift and drag forces.

• The problem numerically simulates airflow in Jet Intake using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 389136.

• The problem numerically simulates airflow over an airfoil (NACA4421) with a slot on the leading edge using ANSYS Fluent software.

• We design the 2-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 260000.

• We aim to study the aerodynamic performance of the wing (drag and lift).

• In this project F1 Aerodynamics CFD Simulation is carried out using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• The Mesh is generated by ANSYS Meshing software, and the element number equals 1,253,296.

• Pressure-Based and Density-Based solvers are used in the simulation.

In this study, the effect of different altitudes of a high-speed drone has been studied using ANSYS Fluent software.

The present problem simulates the airflow around the aircraft wing with a flap and slat, using ANSYS Fluent software.

• The problem numerically simulates the F-35 Considering Compressible Flow using ANSYS Fluent software.

• We design the 3-D model with the CAD software.

• We mesh the model with ANSYS Meshing software, and the element number equals 1,845,364.

• We use the ideal gas to consider a compressible flow.

• The problem numerically simulates a wind tunnel using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 179542.

• We use the Density-Based solver to define the compressible flow.

• The problem numerically simulates the Stall phenomenon over a Wing using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software.

• The air is assumed to be incompressible.

• The problem numerically simulates the Icing of a 3-D Airfoil Surface using ANSYS Fluent software.

• We design the 3-D model by the Design Modeler software.

• We Mesh the model by ANSYS Meshing software, and the element number equals 978532.

• We perform this simulation as unsteady (Transient).

• We use the Eulerian Wall Film (EWF) model to estimate the formation of a thin film of liquid on the wall surfaces.

Introduction to Aerodynamics and Aerospace Concepts with ANSYS Fluent lift force and coefficient determination.

Drag force and coefficient of determination

Moment and moment coefficient calculation

Types of shock waves and their determination

This video discusses aerodynamics and aerospace concepts. This session will begin with a brief introduction to CFD tools in aerospace and aerodynamics, followed by an explanation of how Ansys creates aerodynamic coefficients and simulates shock waves. This section consists of the following subsections:

This section consists of the following subsections:

Determine the lift force and coefficient.

Drag force and coefficient of determination

Moment and moment coefficient calculation

Types of shock waves and their determination

Normal shock wave.

Oblique shock wave

Reflected shock wave

Expansion Wave

Crossed shock wave.

This video is the first installment of the Aerodynamics and Aerospace Training Course.

Computational Fluid Dynamics (CFD) is a highly effective tool that has been widely used in the field of flight dynamics. CFD has proven to be incredibly valuable in the analysis of dynamic stability derivatives. In this lesson, we will explore the fundamental concepts surrounding dynamic stability derivatives in ANSYS Fluent software.

Applications of CFD in Flight Dynamics

CFD simulations play a crucial role in the study of aerodynamics and aircraft performance for aerospace engineers. By studying airflow around an airplane, engineers can gain valuable insights into its performance and optimize its design for optimal efficiency. Understanding the importance of dynamic stability derivatives in enhancing the performance of airplanes is essential.

Derivative of Cmα

An airplane's pitch stability can be quantified by utilizing the Cm derivative. It describes the relationship between the pitching moment and the angle of attack. Positive Cm values indicate stability in pitch, while negative values indicate instability.

Using CFD simulations, engineers can effectively calculate Cmα, enabling them to enhance the aircraft's design for optimal stability during flight.

Derivative of Cnβ

Quantifying a plane's yaw stability can be done using the Cn derivative. It describes the relationship between the yawing moment and changes in the sideslip angle. If the value of Cn is positive, the aircraft exhibits yaw stability, while a negative value indicates instability.

Using CFD simulations, engineers can effectively calculate Cnβ and make necessary design adjustments to guarantee the aircraft's stability during flight.

Calculating the Clq derivative

The Clq derivative is a crucial factor in determining the stability of an aircraft during roll maneuvers. It explains the relationship between the rolling moment and changes in pitch rate. When the Clq value is positive, the aircraft has a stable roll. Conversely, a negative value suggests instability.

Using CFD simulations, engineers can effectively calculate Clq and fine-tune the aircraft's design for optimal stability during flight.

Ultimately, CFD simulations are a valuable tool in improving aircraft design by analyzing dynamic stability derivatives. Engineers can ensure the safety and efficiency of planes in flight by utilizing ANSYS Fluent to calculate these derivatives.

The problem involves numerically simulating the Dynamic Stability Derivatives of a Flying Wing Aircraft using ANSYS Fluent software.

We utilize the Design Modeler software to create the 3-D model.

We use ANSYS Meshing software to create a detailed model, which consists of a total of 4,245,614 elements.

We conduct this simulation in an unsteady (transient) manner.

We utilize the Mesh Motion and UDF files to define the rotational and oscillation motion of the wing precisely.

This project aims to acquire dynamic stability derivatives for a flying wing aircraft. Designing a flying wing can pose challenges when it comes to calculating derivatives and stability analysis, given the absence of horizontal and vertical tails. It requires careful consideration and specialized knowledge.

With ANSYS Fluent software and the application of CFD in flight dynamics, it is possible to obtain the desired derivatives. For this simulation, a UDF file was created to simulate the motion of a UAV accurately. The UAV is flying at a speed of Mach 0.6 in the subsonic region at sea level altitude.

The geometry is created using ANSYS Design Modeler software. Furthermore, ANSYS Meshing software is utilized to generate an unstructured mesh grid. A total of 4,245,614 cells were generated as a result.

Approach: Analysis of Dynamic Stability Derivatives for a Flying Wing Aircraft Simulation of aircraft motion has been conducted using mesh motion and UDF files. The velocity is at 0.6 Mach number, and the operating pressure is set at 101235 pa. The simulation begins with a zero-degree angle of attack, and a forced oscillation has been incorporated into the model.

Results: The obtained results show the rate change of Cm and Cl over time. Based on this data, the derivatives are calculated.

Fluid-Structure Interaction (FSI) is a computer-based method combining fluid flow simulation with structural analysis. Fluid-solid interaction simulation explores the dynamic interactions between fluids and solids within computer models.

FSI has various applications, including aerospace, automotive, civil, and mechanical engineering. ANSYS Fluent is a widely used software for simulating FSI issues.

What is FSI, and how does it work?

Fluid-structure interaction is a technique that simulates the interaction between fluids and solids. It is widely utilized across different branches of engineering to simulate how structures react to fluid pressure and velocity.

Fluid flow can significantly impact a system's structural integrity, which can be explored through FSI simulations. They are also utilized for more efficient planning of fluid-exposed structures.

One-way fluid-structure interaction.

Following the fluid flow simulation in FSI, the structural analysis depends on the fluid flow simulation results. Due to the assumption of minimal structural deformation, this type of simulation primarily emphasizes fluid flow.

1-way FSI is commonly utilized in applications where the fluid flow significantly impacts the structure while the deformation of the structure remains minimal.

Two-way fluid-structure interaction (FSI)

Two-way: When examining the interaction between a fluid and a structure, FSI analysts simultaneously consider the fluid flow and the structure. This type of simulation considers both fluid dynamics and structural deformation. When fluid flow significantly impacts the structure and the resulting deformation is important, 2-way FSI is commonly used.

Using ANSYS Fluent, a sophisticated software package, is a common practice for modelling FSI difficulties. Its wide range of essential features and capabilities empowers engineers to construct realistic models of fluid and structural interactions. With ANSYS Fluent, users can easily simulate complex fluid-structure interactions using various modelling techniques and tools. It also provides support for both 1-way and 2-way FSI simulations.

In summary

Finally, fluid-structure interaction is crucial for modelling the interaction between fluids and structures in simulation. It is widely used in various engineering fields to enhance the design of structures exposed to fluid flow.

The ANSYS Fluent software suite offers diverse tools and functions, allowing for precise simulation of FSI issues. ANSYS Fluent is the preferred software when modelling complex fluid-structure interactions, whether you're working on a one-way or two-way FSI simulation.

The issue involves numerically simulating the Fluid-Structure Interaction over a HAWT Turbine using ANSYS Fluent software.

We utilized the Design Modeler software to create the 3-D model.

An ANSYS Meshing generates a mesh grid with a whopping 3,465,821 elements.

A method called Mesh Motion is utilized to rotate the turbine.

The FSI model analyzes the total strain and stress experienced by the turbine.

Project Description: For this project, our goal is to analyze the interaction between fluid and structure in a HAWT turbine. In this simulation, a flow of 25 m/s heats the turbine, which rotates at 12 RPM. The FSI process involved analyzing the effect of fluid on the structure in a one-way manner.

The deformation at the tip of the blades measured approximately 0.2 m. In addition, an analysis of the bending stress and strain has been conducted.

The geometry is created using ANSYS Design Modeler software.

Furthermore, ANSYS Meshing software is used to generate an unstructured mesh grid. A total of 3,465,821 cells were generated as a result.

Approach: Simulating HAWT Turbine Motion using Fluid-Structure Interaction and Mesh Motion. The velocity is 25 m/s, and the operating pressure is 101235 Pa. The RPM was adjusted to 12, and the hub was connected to a straightforward joint.

The fluid simulation uses Fluent, while the structural analysis uses ANSYS Structure.

Results: The obtained results include the pressure and speed in the domain, as well as the total deformation, strain, and stress over the turbine in the structure section.