# Ansys Fluent vs OpenFOAM Comparison

---
## Frequently Asked Questions

### What is the difference between OpenFOAM vs Ansys Fluent?

Ansys Fluent stands out for its higher reviewer satisfaction scores and user-friendly interface, while OpenFOAM is recognized for its customizability and open-source flexibility.

| [OpenFOAM](https://www.g2.com/products/openfoam/reviews) | [Ansys Fluent](https://www.g2.com/products/ansys-fluent/reviews) |
| --- | --- |
| 4.3/5 (35 reviews) | 4.5/5 (122 reviews) |
| Small-Business | Small-Business |
| — | 8.5 |
| 6.1 | 8.5 |
| Highly customizable and open-source | User-friendly GUI and robust simulation capabilities |



### How do the pricing models of OpenFOAM and Ansys Fluent compare?

Ansys Fluent is rated higher for value, with a stronger Price/Cost satisfaction score than OpenFOAM.

- **OpenFOAM:** Reviewers highlight that OpenFOAM is free and open-source, making it attractive for cost-conscious users, but note a steep learning curve and limited support resources.
- **Ansys Fluent:** Reviewers consistently mention that Ansys Fluent is expensive, but they are satisfied with the value due to its extensive features, robust support, and user-friendly interface.



### What are the best alternatives to OpenFOAM and Ansys Fluent?

The top three alternatives to OpenFOAM and Ansys Fluent are MATLAB, SimScale, and COMSOL Multiphysics.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [OpenFOAM](https://www.g2.com/products/openfoam/reviews) | 4.3/5 (35) | Small-Business | Free and open-source | Highly customizable and open-source |
| [Ansys Fluent](https://www.g2.com/products/ansys-fluent/reviews) | 4.5/5 (122) | Small-Business | Expensive but feature-rich | User-friendly GUI and robust simulation capabilities |
| [MATLAB](https://www.g2.com/products/matlab/reviews) | 4.5/5 (771) | Small-Business | — | Versatile for mathematical modeling and simulation |
| [SimScale](https://www.g2.com/products/simscale/reviews) | 4.6/5 (284) | Small-Business | — | Cloud-based simulation with easy accessibility |



### Which Simulation & CAE features should I prioritize when comparing OpenFOAM and Ansys Fluent?

Buyers should prioritize ease of use, quality of support, simulation capabilities, customization, and pricing when comparing OpenFOAM and Ansys Fluent.

- **Ease of Use:** OpenFOAM 6.7, Ansys Fluent 8.0
- **Quality of Support:** OpenFOAM 6.1, Ansys Fluent 8.5
- **Simulation Capabilities:** Both products are cited for robust simulation, but Ansys Fluent is frequently praised for its user-friendly GUI and advanced solver options.
- **Customization:** OpenFOAM is highlighted for its open-source flexibility and ability to modify code for custom solvers.
- **Pricing:** OpenFOAM is free and open-source, while Ansys Fluent is noted as expensive but comprehensive in features.



### What are the pros and cons of OpenFOAM vs Ansys Fluent?

OpenFOAM's headline strength is its open-source customizability, while Ansys Fluent is recognized for its user-friendly interface and robust simulation capabilities.

- **OpenFOAM strengths:** Free and open-source, highly customizable, strong for code developers, supports automation with Python, and offers flexibility for advanced users.
- **OpenFOAM trade-offs:** Steep learning curve, lack of GUI, challenging documentation, and limited support resources.
- **Ansys Fluent strengths:** User-friendly GUI, robust and versatile simulation capabilities, extensive physics models, strong community and support, and frequent feature upgrades.
- **Ansys Fluent trade-offs:** High cost, resource-intensive, and some reviewers note a steep learning curve for advanced features.



### Is OpenFOAM or Ansys Fluent better for small businesses?

OpenFOAM is better suited for small businesses due to its free, open-source model and strong adoption in the small-business segment.

- **OpenFOAM:** Largest segment is Small-Business; reviewers highlight its zero-cost entry and flexibility for organizations with limited budgets.
- **Ansys Fluent:** Largest segment is Small-Business; reviewers note its high cost but appreciate its comprehensive features and support for small teams with advanced simulation needs.



### Which Simulation & CAE platform has better integrations?

Neither OpenFOAM nor Ansys Fluent has a clear reviewer preference for integrations, as no recent reviews cite specific integration strengths for either product.

- **OpenFOAM:** No reviewer-cited integrations in recent reviews.
- **Ansys Fluent:** No reviewer-cited integrations in recent reviews.



### How do OpenFOAM and Ansys Fluent compare on customer support?

Ansys Fluent outperforms OpenFOAM on Quality of Support by a material margin, with a score of 8.5 versus OpenFOAM's 6.1.

- **OpenFOAM:** Reviewers mention limited support resources and a smaller community, making troubleshooting more challenging.
- **Ansys Fluent:** Reviewers consistently praise the quality and responsiveness of support, as well as the availability of community forums and professional assistance.



### Which is easier to implement, OpenFOAM or Ansys Fluent?

Ansys Fluent is easier to implement, with a higher Ease of Setup score of 8.5 compared to OpenFOAM.

- **OpenFOAM:** Reviewers describe a steep learning curve, challenging installation, and the need for coding knowledge, especially for beginners.
- **Ansys Fluent:** Reviewers highlight a user-friendly setup process, clear interface, and helpful documentation, making initial implementation smoother.



| | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Star Rating** | 4.5 out of 5 | 4.3 out of 5 | 
| **Total Reviews** | 123 | 35 | 


---
## Ratings Comparison
| Rating | Ansys Fluent | OpenFOAM | 
|---|---|---|
  | **Meets Requirements** | 8.9 (92 reviews) | 8.0 (26 reviews) | 
  | **Ease of Use** | 8.0 (92 reviews) | 6.7 (26 reviews) | 
  | **Ease of Setup** | 8.5 (24 reviews) | Not enough data | 
  | **Ease of Admin** | 8.2 (18 reviews) | Not enough data | 
  | **Quality of Support** | 8.5 (89 reviews) | 6.1 (21 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.1 (17 reviews) | Not enough data | 
  | **Product Direction (% positive)** | 8.7 (91 reviews) | 6.1 (24 reviews) | 

---
## Pricing

### Ansys Fluent

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

### OpenFOAM

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

---
## Features Comparison By Category

### Simulation & CAE

| Product | Score | Reviews |
|---|---|---|
| **Ansys Fluent** | 7.8/10 | 70 |
| **OpenFOAM** | 6.9/10 | 16 |

#### Design

| Feature | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **3D/solid modeling Tools** | 7.8 (60 reviews) | 6.2 (11 reviews) | 
| **Drawing Tools** | 7.5 (60 reviews) | 6.1 (11 reviews) | 
| **Editing Tools** | 7.5 (60 reviews) | 6.8 (11 reviews) | 
| **Rendering tools** | 7.6 (58 reviews) | 7.1 (12 reviews) | 
| **Stochastic Modeling** | Not enough data | Not enough data | 
| **Presentation Tools** | Not enough data | Not enough data | 

#### Tools

| Feature | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Fluid analysis** | 9.0 (64 reviews) | 8.8 (13 reviews) | 
| **Finite element analysis** | 8.3 (62 reviews) | 6.5 (8 reviews) | 
| **Multibody dynamics** | 7.8 (55 reviews) | 6.3 (8 reviews) | 
| **Design Analysis** | Not enough data | Not enough data | 

#### Work

| Feature | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Discrete event modeling** | 7.5 (53 reviews) | 6.7 (8 reviews) | 
| **Continuous event modeling** | 8.1 (53 reviews) | 6.9 (9 reviews) | 
| **Mechanical event simulation** | 8.0 (53 reviews) | 7.1 (8 reviews) | 
| **Manufacturing process simulation** | 7.3 (50 reviews) | 6.4 (7 reviews) | 
| **Integrate** | 8.0 (53 reviews) | 6.9 (9 reviews) | 
| **Turbulence Modeling** | Not enough data | Not enough data | 
| **Motion Modeling** | Not enough data | Not enough data | 
| **Dynamic Modeling** | Not enough data | Not enough data | 
| **Mathematical Modeling** | Not enough data | Not enough data | 
| **Agent-Based Modeling** | Not enough data | Not enough data | 
| **Monte Carlo Simulation** | Not enough data | Not enough data | 

#### Environment

| Feature | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Hardware support** | 7.2 (49 reviews) | 7.1 (8 reviews) | 
| **Task** | 8.0 (53 reviews) | 6.8 (10 reviews) | 
| **Manage Multiple Profiles** | 7.2 (52 reviews) | 7.4 (7 reviews) | 
| **Command Clarity** | 7.9 (58 reviews) | 7.2 (12 reviews) | 

#### Additional Functionality

| Feature | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Configurable Workflow** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Data Verification** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **3D Imaging** | Not enough data | Not enough data | 
| **Projections** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Design Management** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Real-Time Monitoring** | Not enough data | Not enough data | 
| **Version Control** | Not enough data | Not enough data | 
| **Visual Analytics** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Direct Manipulation** | Not enough data | Not enough data | 
| **Scenario Planning** | Not enough data | Not enough data | 
| **Product Data Management** | Not enough data | Not enough data | 
| **Predictive Analytics** | Not enough data | Not enough data | 
| **Change Management** | Not enough data | Not enough data | 
| **Process Control** | Not enough data | Not enough data | 
| **Customization** | Not enough data | Not enough data | 
| **Content Library** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Rules-Based Workflow** | Not enough data | Not enough data | 
| **File Management** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **Policy Management** | Not enough data | Not enough data | 
| **Graphical Data Presentation** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Graphical Workflow Editor** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Industry Specific Database** | Not enough data | Not enough data | 
| **Project Workflow** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Performance Management** | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (1):** [Simulation & CAE Software](https://www.g2.com/categories/simulation-cae)




---
## Reviewer Demographics

### By Company Size

| Segment | Ansys Fluent | OpenFOAM | 
|---|---|---|
| **Small-Business** | 39.8% | 63.6% | 
| **Mid-Market** | 33.1% | 18.2% | 
| **Enterprise** | 27.1% | 18.2% | 

### By Industry

#### Ansys Fluent

- **Mechanical or Industrial Engineering:** 21.2%
- **Aviation & Aerospace:** 10.2%
- **Design:** 7.6%
- **Automotive:** 7.6%
- **Airlines/Aviation:** 6.8%
- **Education Management:** 6.8%
- **Research:** 5.9%
- **Higher Education:** 5.9%
- **Oil & Energy:** 5.1%
- **Civil Engineering:** 2.5%
- **Other:** 20.3%

#### OpenFOAM

- **Mechanical or Industrial Engineering:** 30.3%
- **Automotive:** 18.2%
- **Research:** 12.1%
- **Higher Education:** 9.1%
- **Oil & Energy:** 6.1%
- **Renewables & Environment:** 3.0%
- **Information Technology and Services:** 3.0%
- **Government Administration:** 3.0%
- **Electrical/Electronic Manufacturing:** 3.0%
- **Design:** 3.0%
- **Other:** 9.1%

---
## Alternatives

### Alternatives to Ansys Fluent

- [MATLAB](https://www.g2.com/products/matlab/reviews) — 4.5/5 stars (773 reviews)
- [SimScale](https://www.g2.com/products/simscale/reviews) — 4.6/5 stars (284 reviews)
- [Simcenter Inspire](https://www.g2.com/products/simcenter-inspire/reviews) — 4.3/5 stars (78 reviews)
- [Altair HyperWorks](https://www.g2.com/products/altair-hyperworks/reviews) — 4.3/5 stars (0 reviews)
- [Simcenter STAR-CCM+](https://www.g2.com/products/simcenter-star-ccm/reviews) — 4.5/5 stars (218 reviews)
- [COMSOL Multiphysics®](https://www.g2.com/products/comsol-multiphysics/reviews) — 4.3/5 stars (36 reviews)
- [SolidWorks Flow Simulation](https://www.g2.com/products/dassault-systemes-solidworks-flow-simulation/reviews) — 4.1/5 stars (36 reviews)
- [Autodesk CFD](https://www.g2.com/products/autodesk-cfd/reviews) — 4.3/5 stars (31 reviews)
- [Inventor Nastran](https://www.g2.com/products/inventor-nastran/reviews) — 4.0/5 stars (23 reviews)
- [Autodesk Fusion](https://www.g2.com/products/autodesk-fusion/reviews) — 4.5/5 stars (519 reviews)

### Alternatives to OpenFOAM

- [MATLAB](https://www.g2.com/products/matlab/reviews) — 4.5/5 stars (773 reviews)
- [SimScale](https://www.g2.com/products/simscale/reviews) — 4.6/5 stars (284 reviews)
- [COMSOL Multiphysics®](https://www.g2.com/products/comsol-multiphysics/reviews) — 4.3/5 stars (36 reviews)
- [SolidWorks Flow Simulation](https://www.g2.com/products/dassault-systemes-solidworks-flow-simulation/reviews) — 4.1/5 stars (36 reviews)
- [Autodesk CFD](https://www.g2.com/products/autodesk-cfd/reviews) — 4.3/5 stars (31 reviews)
- [Autodesk Fusion](https://www.g2.com/products/autodesk-fusion/reviews) — 4.5/5 stars (519 reviews)
- [SOLIDWORKS](https://www.g2.com/products/solidworks/reviews) — 4.5/5 stars (699 reviews)
- [GNU Octave](https://www.g2.com/products/gnu-octave/reviews) — 4.2/5 stars (55 reviews)
- [Designcenter Solid Edge](https://www.g2.com/products/designcenter-solid-edge/reviews) — 4.3/5 stars (690 reviews)
- [Simcenter STAR-CCM+](https://www.g2.com/products/simcenter-star-ccm/reviews) — 4.5/5 stars (218 reviews)

---
## Top Discussions

### Ansys Fluent

- Title: [What is Ansys Fluent used for?](https://www.g2.com/discussions/what-is-ansys-fluent-used-for) — 2 comments
  > **Top comment:** "Modeling and simulating mechanical systems"
- Title: [Which is the best CFD software?](https://www.g2.com/discussions/which-is-the-best-cfd-software) — 1 comment
  > **Top comment:** "Ansys Fluent"
- Title: [Does Ansys student have fluent?](https://www.g2.com/discussions/does-ansys-student-have-fluent) — 1 comment
  > **Top comment:** "Yes, but has limited capability compare to the professional version."

### OpenFOAM

- Title: [Is OpenFOAM free?](https://www.g2.com/discussions/is-openfoam-free) — 1 comment
  > **Top comment:** "Yes! It's open source"
- Title: [What do you use as mesher? Are there free ones that are good for complex geometries?](https://www.g2.com/discussions/30233-what-do-you-use-as-mesher-are-there-free-ones-that-are-good-for-complex-geometries) — 1 comment
  > **Top comment:** "I used snappyHexMesh to mesh a complicated geometry and it did well. Many like cfMesh too. If snappyHexMesh is used, can use blockMesh to generate background..."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/ansys-fluent-vs-openfoam)