Most fluid flows (gas or liquid) are turbulent in nature. These flows are characterized by unsteady and irregular fluctuations of transport quantities such as mass, momentum and species in both space and time. These fluctuations enhance flow mixing. In this SimCafe course, you will learn how to model three dimensional internal turbulent pipe flow. You will create the geometry, the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this fluid flow problem are explained using step-by-step instructions.

A mixing layer is formed when two parallel streams of fluids are moving at different velocities such that the velocity at the fluid-fluid interface is non-zero. In the absence of dissipative forces such as viscosity, small perturbations at the fluid-fluid interface lead to the creation of vortices at the interface. In this SimCafe course, you will learn how to model the 2D periodic double shear layer using Ansys WorkBench. You will create the geometry, computational mesh, and set up the boundary conditions needed for the simulation, and learn about the fundamentals of particulate laden flow. The concepts and the steps needed to successfully model this fluid flow problem are explained using immersive step-by-step walk-through instructions.

Combustion is a process that includes two processes viz. thermal and chemical in which a hydrocarbon fuel reacts with an oxidant to form products, accompanied by the release of energy in the form of heat. It is an integral part of various engineering applications like internal combustion engines, aircraft engines, rocket engines, furnaces, and power station combustors. Combustion simulation is used broadly during the design, analysis, and performance stages of the above-mentioned applications. In this SimCafe course, you will learn how to model axisymmetric case for cylindrical combustion chamber with the fuel (CH4) and air mixture. You will set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this fluid flow problem are explained using step-by-step instructions.

Diffusion is a process resulting from the movement of a substance from an area of high concentration to an area of low concentration. It is completely driven by a concentration gradient. In this SimCafe course, you will learn how to model 3D diffusion of gas using Ansys WorkBench. You will set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this fluid flow problem are explained using immersive step-by-step walkthrough instructions.

Cooling electronics components is important for a smooth, reliable operation. The thermal power generated by the electronics is detrimental to their operation and often leads to premature failure and a shortened lifecycle. In this SimCafe course, you will learn to model the convective heat transfer through an electronics box by following the end-to-end workflow in Ansys Workbench. You will create the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this fluid flow problem are explained using step-by-step instructions.

In this SimCafe course, we will learn how to model transonic flow over an aircraft wing in Ansys Fluent and analyze the results. We will learn the end-to-end workflow in Ansys Workbench and go through all the steps in detail.

Bio-medical researchers have been relying on computational fluid dynamics to model and understand the physical mechanisms behind the formation and progression of hemodynamic disorders. In this SimCafe course, you will learn how to model three dimensional internal blood flow in a bifurcating artery. You will create the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this fluid flow problem are explained using immersive step-by-step walk-through instructions.

Converging-diverging nozzles are used extensively in the area of propulsion, where they are designed to generate the required thrust and assist in the maneuverability of the aircraft or rocket. In this regard, it is important to analyze the flow within the nozzle and reduce the total pressure losses. In this SimCafe course, you will learn how to setup a simulation to analyze the flow through the nozzle and analyze the results.

Buckling analysis calculates the buckling load factor and associated mode shapes. The buckling load factor multiplied by the applied load gives the magnitude of the compressive load that can cause buckling. In this SimCafe course, you will learn to analyze buckling on a simple column by following the end-to-end workflow in Ansys Structural. You will create the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this structural problem are explained using immersive step-by-step walk-through instructions.

The design of the telescope truss should be able to sustain dynamic loads and must be flexible enough to provide support for different motions. In this SimCafe course, you will learn end-to-end workflow for importing a realistic geometry and understand the importance of FEA simulations when designing the telescope truss. You will create the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this structural problem are explained using step-by-step instructions.

Pressure vessels are used in transportation for storage of gases and liquids. Many gases are stored at very high pressure in the liquid form. The pressure vessels are designed mainly to have high strength in both the circumferential (hoop strength) and axial directions. In this SimCafe Course, we will learn to estimate the hoop, axial, and radial stresses in pressure vessels using Ansys Structural.

Four-point bending strength is performed to analyze the flexural strength of a material. In this SimCafe course, you will learn to conduct this test, virtually, on a simple T-beam, made of structural steel, to understand the boundary condition setup by following the end-to-end workflow in Ansys Structural. You will create the computational mesh and set up the boundary conditions needed for the simulation. The fundamental concepts and the steps needed to successfully model this structural problem are explained using immersive step-by-step walkthrough instructions.

Stepped shafts are widely used in drive trains. Mostly supported by bearings at the end, the shaft experiences bending loads, axial thrust, and torsional loads. The shaft must have greater strength to withstand these loads. In this Sim Café course, you will learn to estimate the axial stress concentration on a stepped shaft under axial tension using Ansys Structural.

A femur is the upper bone of the leg. In biomedical engineering, the mechanical properties of the femur can be studied through conducting tests on rat femur.  The valuable data from tests can then be applied in simulation to predict behaviors of other femurs.  In this SimCafe Course, we will show you step by step how to conduct a bending simulation on a rat femur and evaluate the results.

Coronary Artery Disease kills nearly 1 in 4 Americans every year. Implantable stent treatments for arterial disease are constantly evolving with implantable stent innovations leading the way. Over 600,000 cardiovascular stents are implanted every year just in the United States alone. Stents may look relatively simple but are highly engineered lifesaving medical devices. It involves advanced material modeling, complex interaction with the arteries, and extremely high demand for accuracy. Apart from conducting experiments on stents, FEA is a tool that engineers and researchers use extensively to study and design stents. It has the ability to identify some mechanical characteristics of coronary artery stents that may not be easily obtained using traditional mechanical testing. In this SimCafe course, we will go step by step to set up and run a Balloon-Expandable stent simulation.   

The purpose of this SimCafe course is to showcase, in a relatively simple situation, where simple beam theory is no longer as valid as it is in the limit of a long and slender beam geometry.  In some commercial codes, simple one-dimensional cubic beam elements for bending deflection, do not capture shear deflection when the beam is no longer slender. Alternatively in Ansys, if shear deflection is accounted for in the 1D element formulation, results for the beam’s tip deflection will not agree with tip deflections predicted by simple Euler-Bernoulli beam theory. This course is meant to highlight where it is relatively straightforward to apply 3D FEA and resolve a correct solution.

In this course, we will demonstrate the workflow for setting up an Ansys Lumerical FDE simulation to find the supported modes of a waveguide and analyze the frequency response of the modes. We will learn what types of devices and applications can be simulated using the FDE solver, and the types of results that can be obtained using the analysis tools.

In this course, we will discuss the algorithm used to find the eigenmodes of a given structure and the properties of those modes in Ansys Lumerical FDE. We will also explain the overlap and power coupling calculations, the feature that tracks modes as a function of frequency, and how properties such as dispersion and group velocity are calculated. By the end of this course, you will be able to describe the algorithm used by the FDE solver, know when the FDE method can be applied, understand the difference between the overlap and power coupling quantities, and know how the overlap frequency sweep calculations are performed.

In this course, we will learn about the material database and how to add new materials. We will also learn when broadband material fits need to be generated and how to check material fits. By the end of this course, you will be able to add new materials to the material database, know when broadband material fits need to be used, check material fits in the material explorer, and know where to find more information on the material models.

In this course, we will learn about the properties that are set in the Ansys Lumerical FDE solver region and mesh override regions. The FDE solver region is where the solver region geometry, mesh and boundary conditions can be set.

In this course, we will learn how to run the Ansys Lumerical FDE solver, use the built-in analysis options, get results using the scripting language, and export results. We will also discuss convergence testing for verifying result accuracy. By the end of this course, you will be able to understand the difference between layout and analysis modes, calculate modes of straight and bent waveguides using the FDE solver, know how to use the data analysis group, understand the difference between the integrated frequency sweep tool and the general parameter sweep tool, plot and export results, explain what convergence testing is and why it is necessary, and know where to find information about script commands used for FDE analysis.

In this course, we will cover the basic workflow for EME simulations, and when you should use EME simulations. We will also go through a hands-on step-by-step example showing how to set up, run and analyze results for a spot size converter.

This course will cover some background on the calculations performed for the Eigenmode Expansion (EME) method used for Ansys Lumerical EME simulations. The EME method makes use of the Finite Difference Eigenmode (FDE) solving algorithm, which is covered in detail in the FDE learning track. The FDE learning track is a recommended prerequisite for this course, so the FDE algorithm will not be discussed in detail here.

This course will cover the basic settings of the Ansys Lumerical EME solver region, including the simulation region geometry, cell definition, periodicity and boundary conditions. Note that many of the settings are shared with the FDE solver settings. Those settings will not be covered here. See the Lumerical FDE Learning Track for more information.

In this course, we will discuss ports, cells, and monitors. It will cover how to add, and set up ports, and select port modes. This will be followed by a discussion of monitor types and how to set them up.

In this course, we will look at the results after running Ansys Lumerical EME simulations and discuss how to interpret those results. Examples demonstrating how to use the periodicity settings and the propagation sweep tool will also be presented.

In this course, we will discuss the sources of error in an Ansys Lumerical EME simulation and how to verify the accuracy of simulation results by using convergence testing and error diagnostics.

In this course, we will briefly explain what Ansys Lumerical varFDTD is and how it works. We will introduce some key example devices where the varFDTD solver can be used.

In this course, we will demonstrate how to set up and run an Ansys Lumerical varFDTD simulation of a double bus ring resonator, collect the results and discuss how the results compare to 3D FDTD simulation results.

In this course, we will discuss the effective index method used by the Ansys Lumerical varFDTD solver to collapse a 3D geometry into a 2D simulation. The course starts by describing the simulation workflow, which highlights some of the differences between varFDTD and a traditional FDTD simulation. After the workflow is introduced, more information will be provided on the algorithm used to compress the simulation into an effective 2D simulation.

In this course, we will discuss the solver region, materials, sources and monitors used in varFDTD. Most of the features are similar to those in FDTD, so we will only focus on the aspects of the features that are unique to varFDTD.

The Ansys Lumerical varFDTD solver can be used to simulate a range of planar integrated optics components. In this course, we will show several example devices and results that can be obtained from the varFDTD solver.

Multipaction is an electron resonance effect that occurs when applied RF fields accelerate electrons that are in a vacuum and cause them to impact with a surface, which depending on its energy, release one or more electrons into the vacuum – an avalanche effect like in lasers. Multipaction only occurs in a vacuum. In this AIC Module, you will be introduced to the Multipaction feature using HFSS in AEDT 2020 R2 that will help you to design and analyze for a wide number of cutting-edge applications. A coaxial geometry is used as a course model to demonstrate this feature.

In this module, we describe cosimulation as a method of design. By definition, the method of cosimulation involves two or more simulation types that are performed to simulate a whole system. With cosimulation, a dynamic link is created between the two tools so that the changes in one tool is reflected in the other in real time. The power of cosimulation will be demonstrated with the help of a 5G phased array application. We will focus on the cosimulation abilities of the Ansys HFSS MCAD, HFSS ECAD and Circuit tools present in the Ansys Electronic Desktop. However, the cosimulation feature can also be used across different Ansys physics tools.