Fluids Product Highlights

With ANSYS 18, every engineer can create better, more accurate computational fluid dynamics (CFD) simulations. Engineers new to CFD will benefit from greatly expanded capabilities in easy-to-use ANSYS AIM, including support for transient flows, non-Newtonian fluid viscosity and fluid momentum. In addition, ANSYS 18 includes new features and functionality that enable engineers to solve CFD problems with more accuracy than ever before. Breakthrough harmonic analysis delivers accurate turbomachinery simulations up to 100x faster. ANSYS 18.1 also introduces CFD Enterprise, the first solution designed for CFD experts in organizations who need to solve the toughest problems.

PUMA speeds high quality free surface flow and combustion simulations

Capturing the fine details in free surface flows and combustion simulations requires an extremely fine mesh that can result in a long solve times because polyhedral mesh could not be automatically adapted. Now patented polyhedral unstructured mesh adaptation (PUMA) in ANSYS Fluent automatically refines the polyhedral mesh to resolve fine details while leaving coarser mesh in place elsewhere. As a result, engineers can get the accuracy they need without the long wait.

Get accurate, reliable turbomachinery simulation results 100X faster with harmonic analysis

Turbomachinery blades must be optimized to achieve superior performance. Previously, the flow for every blade in every row had to be painstakingly calculated — a prohibitively expensive undertaking. ANSYS 18 introduces harmonic analysis to solve these problems in the frequency domain, dramatically accelerating the solution by up to 100x while significantly reducing the hardware requirements, enabling you to obtain a full-wheel solution by calculating as few as one blade per row. Harmonic analysis is not an approximation — the results match the full wheel solution.

You can now apply complex vibrational modes from a cyclic modal analysis to CFX flutter analysis. This reduces the problem size and time to convergence for simulations of radial turbomachinery, such as centrifugal compressors and turbines found in turbochargers, which have blades connected by a relatively thin hub at the outer radius. The new capability captures hub section movement in addition to that of the blades. These problems can be solved using Fourier transform or harmonic analysis, significantly reducing the overall size of the problem and time to convergence.

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Use overset mesh to simplify and accelerate simulations with moving parts

Overset mesh simplifies and speeds simulations that include structured mesh around individual parts and part swapping, as well as, moving cell zones without having to use re-meshing or smoothing.

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ANSYS AIM provides easy prep and meshing for ANSYS Fluent simulations

Now you can take advantage of ANSYS AIM’s fast, intuitive workflow to prepare and mesh geometry for solving in ANSYS Fluent. That enables you to include more advanced fluid physics in the simulation and facilitates collaboration with simulation analysts who can validate results. Reliable data transfer between simulation tools used by design engineers and simulation analysts is required to streamline the product development process.

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Solve your toughest simulation challenges with powerful ANSYS CFD Enterprise

When you're serious about CFD, you need the right tools for the job. New ANSYS CFD Enterprise includes all the best of ANSYS’ world-class CFD software so experienced engineers and analysts can enjoy the fastest, most accurate results across the widest array of applications, all the time, without compromise.

CFD Product Comparison     ANSYS CFD Enterprise

CFD simulation apps improve workflows, speed results and provide best practices

ANSYS 18 expands the use of simulation apps with CFD. Engineers can improve outcomes by creating, sharing and using simulation apps that provide simplified workflows, best practices and solutions created by the best CFD experts in the ANSYS ecosystem.

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ANSYS Forte delivers faster, higher-fidelity diesel engine simulations

With enhancements to ANSYS Forte, you will be able to simulate diesel engines faster and with more accuracy. Greater flexibility to set up in-cylinder simulations using periodic boundaries speeds solution time by up to 9X for a 9-hole injector while providing high-fidelity results. New turbulence models for large eddy simulation improve prediction of flame lift-off and ignition delay, especially for conditions where local mixing dominates such behavior. Full-cycle diesel simulations including enhancements have been validated in recent technical papers published by SAE.

ANSYS Forte

ANSYS Fluent accurately characterizes cavitation where multiple fluids and non-condensing gases are present

Pump designers need to accurately predict cavitation so they can define operating limits and prevent premature damage. New simulation tools are needed to accurately model cavitation in challenging operating conditions such as high pressures and multiple-fluid mixtures. ANSYS Fluent now can incorporate multiple cavitation mechanisms in a single simulation and account for non-condensable gases in liquid and their effect on cavitation using interphase species mass transfer models.

Adjoint solver now optimizes simulations including moving reference frames and conjugate heat transfer

The adjoint solver replaces time-consuming trial and error to automatically optimize geometries. New capabilities such as support for rotating reference frames, cylindrical deformation regions and conjugate heat transfer enable engineers using the adjoint solver to optimize a greatly expanded range of problems, including rotating machinery and heat exchangers.

New rotating reference frame capability
New rotating reference frame capability enabled the adjoint solver to optimize this fan blade geometry resulting in 15 percent lower total pressure and 8.5 percent improved efficiency.

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PUMA technology speeds high quality free surface flow

PUMA technology automatically refines polyhedral mesh to capture splash details while leaving courser mesh elsewhere to speed solve time.

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