CAD import and meshing

From CAD import to geometric meshing, flexible tools allow users to automatically create meshes or manually generate them. ANSYS mesh partitioning can extract fluid computational domain space from CAD assemblies and automatically generate tetrahedral or hexahedral plus boundary layer meshes. Meanwhile, advanced repair tools allow users to import and preprocess geometry, manually generating partial or overall meshes.

Quickly extract fluid calculation domain space from CAD assembly and partition it into grids

Fluent provides various forms of advanced turbulence models, including algebraic, one equation, two equation, and Reynolds stress models

Advanced chemical reaction flow models can solve combustion problems of various gaseous, coal, and liquid fuels

Using multiphase flow model to solve performance problems of separation equipment

Aeroacoustic simulation of NACA 0012 airfoil trailing edge noise

Advanced physics model functionality

• turbulence model 

A wide range of model systems, providing leading turbulence simulation capabilities. This includes several popular versions of the k-epsilon and k-omega models, as well as the Reynolds stress model suitable for highly anisotropic flows. It also provides advanced scale turbulence models, including Large Eddy Simulation (LES), Separated Eddy Simulation (DES), and Adaptive Eddy Simulation (SAS). The transition model (SST) can accurately predict the transition of boundary layer flow from laminar to turbulent state.

• Robust solver

Fluent includes a coupled solver for pressure basis, a separated solver for pressure basis, and two density basis solvers, implicit and explicit. No matter what problem you are studying, ANSYS has a solver that suits your needs. The default values of the new version of the intelligent solver make the solution more robust; Enhanced the robustness of the dynamic grid; Improved numerical methods to make the solution more robust.

• Chemical reaction flow

The comprehensive chemical reaction flow simulation function allows users to simulate gaseous reactions using simple or complex chemical reactions. The embedded pollutant model is simple and easy to use, and can accurately predict the emissions of pollutants such as NO, SO, and soot. At the same time, simulation of surface chemical reactions can also be conducted. All chemical reaction models and turbulence models are compatible.

• Multiphase flow

Rich multiphase flow models are used to simulate the states and interactions of many phases during mixing, including liquid, solid, gas, and particle flows, by using mixed fraction models or Euler models; Using VOF model to track multiple immiscible fluids; Use discrete phase models to handle problems such as particle and droplet fragmentation and evaporation. Software can also simulate phase transitions.

• Other advanced features

Advanced acoustic simulation functions, such as the Ffowcs Williams Hawkings acoustic analogy method and the ability to directly calculate aerodynamic noise, can be used to simulate the propagation of aerodynamic noise. The dynamic/mobile grid function allows you to simulate flow problems related to moving parts.

Integrated functions

• Parallel scalability

The parallel extension function ensures that simulations can efficiently utilize parallel networks composed of processors of the same or different classes. Dynamic, physics based load balancing technology automatically detects and analyzes parallel performance, adjusts the distribution of computing grids between different processors, and maximizes computing speed.

• User customization

Implement user-defined professional physical models, design and script user environments for better operational experience, and further automate workflows.

• Design exploration and optimization

In order to increase the throughput of simulation, Fluent allows for automated study of multiple parameterized design variables without the need for other programs. The ANSYS integrated experimental design solution enables users to easily analyze thousands of data points in the same user environment.

ANSYS Fluent is the first commercial CFD code to provide innovative adjoint matrix solver technology. Due to its ability to estimate the impact of parameter changes on the overall system performance before actual modifications are made, the accompanying matrix solver further improves simulation speed and, more importantly, contributes to innovation.

Simulation of Temperature Control in Data Centers

Aerodynamic simulation of sailboat model, with over 1 million computational grids, solved using HPC functionality

Using Euler particle model to simulate the influence of hardware components on droplet and catalyst distribution in fluidized catalytic cracking unit