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ANSYS Fluent vs COMSOL Multiphysics

ANSYS Fluent logo

ANSYS Fluent

CAD

Computational fluid dynamics solver for turbulence, combustion and multiphase flow

From
On request
Rated
-
Full reviewWebsite
COMSOL Multiphysics logo

COMSOL Multiphysics

CAD

Finite element simulation built around coupling physics, with add-on modules licensed separately

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ANSYS Fluent solver seats and HPC packs are licensed separately, and the packs scale by core count, so the cost of running a large case in parallel can exceed the base licence several times over and is the line item that surprises first-time buyers.; COMSOL Multiphysics the base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.
  • They diverge on capability: ANSYS Fluent covers Turbulence model library, COMSOL Multiphysics covers Coupled multiphysics solving.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which ANSYS Fluent and COMSOL Multiphysics actually diverge.

Attributes where ANSYS Fluent and COMSOL Multiphysics differ
AttributeANSYS FluentCOMSOL Multiphysics
PlatformsWindows, LinuxWindows, Linux, macOS

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (CAD).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in ANSYS Fluent

  • Turbulence model library
  • Combustion and reacting flow
  • Multiphase flow
  • Meshing
  • HPC parallel solving
  • Fluent aero and native GPU solver
  • Ansys Workbench integration
  • User-defined functions

Only in COMSOL Multiphysics

  • Coupled multiphysics solving
  • Equation-based modelling
  • Add-on module library
  • Application Builder
  • COMSOL Compiler and Server
  • CAD import and LiveLink
  • Parametric sweeps and optimisation
  • Cluster and cloud computing

What people use each for

The jobs each tool is most often brought in to do.

ANSYS Fluent

  • Certifying an aerospace component where the customer specification names a validated commercial CFD solvernot COMSOL Multiphysics
  • Predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical designnot COMSOL Multiphysics
  • Combustion analysis for a gas turbine or industrial burner where detailed chemistry models are requirednot COMSOL Multiphysics
  • A consultancy that must hand a client an auditable analysis in a tool the client's own engineers can reopennot COMSOL Multiphysics

COMSOL Multiphysics

  • Modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the fieldnot ANSYS Fluent
  • Research work needing custom partial differential equations that no packaged solver in a mainstream tool providesnot ANSYS Fluent
  • Packaging a validated model as an app so process engineers can run studies without learning the simulation toolnot ANSYS Fluent
  • A department wanting shared concurrent access via a Floating Network Licence, with cluster runs at no extra licence costnot ANSYS Fluent

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

ANSYS Fluent

  • Solver seats and HPC packs are licensed separately, and the packs scale by core count, so the cost of running a large case in parallel can exceed the base licence several times over and is the line item that surprises first-time buyers.
  • Ansys does not publish any pricing, and quotes vary widely by region, industry and negotiating position, so a smaller firm has no way to know whether it is being charged fairly relative to a large account.
  • Synopsys completed its acquisition of Ansys in July 2025 and started shipping combined capabilities in 2026; packaging, bundling and account teams are changing, and buyers on multi-year agreements should expect renewal terms to be renegotiated on a different basis.
  • Getting trustworthy results demands genuine CFD expertise in meshing, turbulence model selection and convergence assessment, so the licence is useless without a specialist, and the specialist is harder to hire than the software is to buy.
  • Licences are typically served from a network licence manager, which means concurrent-use contention inside a busy simulation group; engineers queue for solver tokens, and organisations end up buying spare seats purely to avoid the queue.

COMSOL Multiphysics

  • The base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.
  • Perpetual licences renew maintenance at 20% of the then-current price each year, and because that percentage applies to the whole module stack the annual bill grows as your module list does and as list prices rise.
  • No pricing at all is published, so procurement cannot benchmark or budget without a sales engagement, and comparisons against Ansys or SolidWorks Simulation are effectively impossible before that point.
  • Named Single-User and CPU-locked licences do not share, so a team of six that bought individual licences ends up with idle seats while a Floating Network Licence would have covered them, and switching licence type is a commercial renegotiation.
  • Solving strongly coupled systems is memory hungry and slow, and models that look modest in the GUI routinely need tens of gigabytes of RAM, so hardware cost is a real and often underestimated part of adoption.

Pricing, plan by plan

ANSYS Fluent

On request
  • Ansys Fluent$undefined/year
    • Annual lease or paid-up perpetual licence
    • Solver seats licensed separately from HPC parallel packs
    • HPC packs priced by core count and scale multiplicatively

COMSOL Multiphysics

On request
  • COMSOL Multiphysics base licence$undefined/year
    • CPU-locked, Named Single-User or Floating Network licence types
    • Perpetual or term licensing
    • Perpetual includes updates and support for 12 months, then renews at 20% of current price
  • Academic licences$undefined/year
    • Class Kit Licence for up to 30 concurrent users per class
    • Academic Server Licence for up to 300 concurrent app users
    • Quote through the academic sales channel

Which should you pick?

Choose ANSYS Fluent if

  • You need turbulence model library.
  • You work on Windows, Linux.
  • You also want combustion and reacting flow.
ANSYS Fluent review

Choose COMSOL Multiphysics if

  • You need coupled multiphysics solving.
  • You work on Windows, Linux, macOS.
  • You also want equation-based modelling.
COMSOL Multiphysics review

Questions people ask

Is ANSYS Fluent or COMSOL Multiphysics better?
Neither clearly leads. ANSYS Fluent starts at On request and COMSOL Multiphysics at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ANSYS Fluent or COMSOL Multiphysics?
ANSYS Fluent starts at On request and COMSOL Multiphysics at On request.
Does ANSYS Fluent or COMSOL Multiphysics run on more platforms?
ANSYS Fluent runs on Windows, Linux. COMSOL Multiphysics runs on Windows, Linux, macOS.
What is ANSYS Fluent best used for?
ANSYS Fluent is most often used for certifying an aerospace component where the customer specification names a validated commercial cfd solver, predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical design, combustion analysis for a gas turbine or industrial burner where detailed chemistry models are required, a consultancy that must hand a client an auditable analysis in a tool the client's own engineers can reopen. Of those, certifying an aerospace component where the customer specification names a validated commercial cfd solver and predicting thermal performance of a data centre or electronics enclosure before committing to a mechanical design are not what COMSOL Multiphysics is typically brought in for.
What can ANSYS Fluent do that COMSOL Multiphysics cannot?
ANSYS Fluent covers Turbulence model library, Combustion and reacting flow, Multiphase flow, Meshing. COMSOL Multiphysics covers Coupled multiphysics solving, Equation-based modelling, Add-on module library, Application Builder.

Answered from the vendors’ own pages

ANSYS Fluent: How much does Fluent cost?

Ansys does not publish pricing. Expect an annual lease per solver seat plus separately licensed HPC packs for parallel cores, with the total for a serious capability running into six figures a year.

COMSOL Multiphysics: Does the base licence include CFD or structural mechanics?

Only limited capability. Serious CFD, structural, RF and acoustics work each require the relevant add-on module at extra cost.

ANSYS Fluent: Is Fluent still an Ansys product?

Yes, but Ansys is now part of Synopsys following the acquisition that completed in July 2025, and the two portfolios are being combined.

COMSOL Multiphysics: What does maintenance cost?

Perpetual licences include 12 months of updates and support, then renew at 20% of the then-current price per year.

ANSYS Fluent: Can OpenFOAM do the same job?

Numerically it can cover a lot of the same physics at no licence cost, but it lacks the meshing workflow, support and the validation pedigree that certification and customer specifications often require.

COMSOL Multiphysics: Which licence type should a team buy?

Floating Network if more than a couple of people use it, since it shares concurrency and includes cluster and cloud computing at no extra charge.

ANSYS Fluent: Is there a free version?

There is a student edition with cell count limits, suitable for learning but not for production work.

COMSOL Multiphysics: Is pricing published?

No. COMSOL publishes licence types but no prices; every purchase goes through a quote.

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