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DWSIM

Engineering & science

Free open-source softwareEditorial overview
A CLOSER LOOK

What is DWSIM?

DWSIM is a chemical process simulator for building flowsheets and evaluating material and energy behavior. It supports steady-state and dynamic workflows with unit operations and thermodynamic models, helping engineers and students explore process assumptions in an open application.

Process flowsheets

Thermodynamic models

Unit operations

Steady-state and dynamic simulation

Is it a good fit?

Best suited to

Chemical engineers and students modeling process flowsheets

Before you choose

Property-method selection requires expertise. Industrial decisions need validated assumptions.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The GPLv3 software is available without a license subscription and includes Process flowsheets and Thermodynamic models. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

Open-source software

$0software license

No software subscription; hardware, support and any separately licensed extras are not included.

  • Process flowsheets
  • Thermodynamic models
  • Unit operations
View official plan

No software subscription; hardware, support and any separately licensed extras are not included.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Accessible open process-simulation environment

Useful for teaching mass and energy balances

What to keep in mind

Property-method selection requires expertise

Industrial decisions need validated assumptions

How to use it well

Choose components and a thermodynamic model appropriate to the mixture before assembling a large flowsheet. Verify one unit operation and its mass and energy balances, then add recycle loops or dynamic behavior gradually. Document property methods and operating assumptions so another engineer can distinguish simulation choices from measured process information.

This is best suited to chemical engineers and students modeling process flowsheets. Before committing a larger project, account for these trade-offs: property-method selection requires expertise; industrial decisions need validated assumptions.

A few things you might be wondering.

Is DWSIM free?

The GPLv3 software is available without a license subscription and includes Process flowsheets and Thermodynamic models. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

Can DWSIM model dynamic processes?

The project supports dynamic as well as steady-state simulation.

Does any thermodynamic model suit every mixture?

No. Model selection strongly affects results and must fit the system.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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