DWSIM
Simulation & CAE software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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- Energy and utilities
- Agriculture, fishing, and forestry
- Education and training
What is DWSIM
DWSIM is an open-source chemical process simulation application used to model steady-state and dynamic behavior of process plants. It targets chemical, petrochemical, and process engineering users who need flowsheeting, thermodynamics, and equipment/unit-operation modeling for design and analysis. The product supports CAPE-OPEN interoperability and provides a graphical flowsheet environment with extensibility through scripting and external property packages. It is commonly used in education, prototyping, and cost-sensitive engineering workflows where an open-source license is important.
Open-source process simulator
DWSIM is distributed under an open-source license, which can reduce licensing barriers for education, research, and smaller engineering teams. Users can inspect and modify source code to adapt models or add features. This can be advantageous compared with proprietary simulation environments when transparency and customization are required.
Process flowsheeting capabilities
The software provides a graphical flowsheet interface for building process models with common unit operations (e.g., separators, heat exchangers, reactors, pumps, compressors). It supports steady-state simulation and includes options for dynamic simulation in applicable scenarios. These features align with typical process engineering workflows rather than general numerical computing alone.
Interoperability and extensibility
DWSIM supports CAPE-OPEN standards, enabling integration with compatible thermodynamic/property packages and unit operation components. It also offers scripting/automation options that can help with parameter studies and repetitive simulation tasks. This extensibility can help teams connect DWSIM to broader engineering toolchains.
Not a general CAE suite
DWSIM focuses on chemical process simulation and does not provide broad mechanical CAD/CAE capabilities such as parametric 3D modeling, meshing, or structural/CFD solvers. Organizations needing an integrated mechanical design-to-analysis workflow typically require additional specialized tools. This can increase toolchain complexity for multidisciplinary engineering teams.
Model and data limitations
Simulation accuracy depends on available thermodynamic models, component databases, and unit operation fidelity, which may not cover all specialty chemicals or proprietary correlations out of the box. Users may need to validate results carefully against plant data or literature and potentially configure external property packages. This can add setup effort for non-standard processes.
Usability and support variability
As an open-source product, the depth of formal vendor support, documentation consistency, and release cadence can vary compared with commercial engineering platforms. Teams may rely more on community resources and internal expertise for troubleshooting and validation. This can be a constraint for regulated environments or projects with strict support SLAs.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| DWSIM (open-source desktop) | Free (GNU GPLv3) | Desktop installation for Windows, Linux, macOS; full-featured open-source chemical process simulator; downloads and documentation on the official DWSIM site. |
| DWSIM Pro — Hourly (via Simulate365) | €29.99 per hour (2/10/50/250 hour packages) | 1 named user; includes everything from DWSIM open-source plus 50+ DWSIM Pro features and 11 Simulate365 applications; instant access and onboarding support; buy online on Simulate365. |
| DWSIM Pro — Team (via Simulate365) | €7,400 per 3-month contract | 2 named users; includes Hourly features; personal private support; first flowsheet provided; collaboration, access/modification/version control, flowsheet web GUI and API. |
| DWSIM Pro — Business (via Simulate365) | Custom pricing (contact sales) | 1/2/3-year contracts; includes Team features; multi-year and multi-user discounts, price freeze, add-ons (e.g., Flowsheet Copilot) — contact Simulate365/CGC for details. |
