Flow Benefits

  1. Develop pedestrian environments using either imported CAD/BIM geometry or from scratch with Flow's new polygon modelling tools.
  2. Exploring different scenarios is no longer an expensive or time-consuming luxury. Simulate, modify and analyse faster than ever.
  3. Features new biped agents for more realistic simulation.

About This Software

Crowd simulation with Flow - Introducing V8.0

We are delighted to introduce Flow 8.0, which enables designers everywhere to take advantage of crowd and evacuation simulation on all kinds of projects. Flow 8.0 has a host of new features, which includes agent development and enhanced analysis options. Visualisation tools within Flow have been upgraded, and there is now alembic export capabilities to enhance rendering in applications such as 3ds Max.

Flow brings the power and speed of MassMotion to a wider market. It features unlimited crowd sizes and the advanced analysis tools that crowd specialists around the world have come to rely on. Flow will suit the needs of planners, designers, engineers and architects who need to quickly model environments to get feedback on pedestrian interaction and behaviour for a large number of different scenarios.

Intelligent agents in a BIM environment

BIM is very much at the heart of the design of Flow and users can rapidly transfer BIM models to Flow using the open IFC 2x3 standard. This means that the data generated can be used to inform others in the project teams quickly, producing optimal designs. Flow also features a rich set of 3D modelling tools for rapid testing of alternatives and can even be used to develop 3D environments from scratch.

Advanced options for modelling environments

A new purpose built object based interface has been developed that enables users to rapidly develop pedestrian environments using either imported CAD/BIM geometry or from scratch with Flow's new polygon modelling tools.

Biped agents assist with highly visual output

Users of MassMotion have become aware of the benefits in switching from 2D to 3D analysis. The visual results are easy to communicate to stakeholders, and can be used to build common understanding between technical and non-technical alike. Flow features new biped agents that have been developed for even higher impact visual presentation, showing a true representation of pedestrian speed and crowd behavior.

We believe that Flow is a tool that every architect, fire engineer and designer will need to meet their customer’s growing expectations for proof of concept, with more analysis and easily-understandable visual output. There is a clear distinction between MassMotion and Flow based on the range of the needs of our customers and all parties interested in our pedestrian simulation solution.  Naturally, there is a clear upgrade path between the two products and those who find they need more functionality can move from one to the other, easily transferring data between the systems.

Verification and validation

MassMotion and Flow are verified in accordance with the International Maritime Organisation (IMO) 1238 and the National Institute of Standards (NIST) Technical Note 1822.

You can download a copy of the Verification and Validation document here.

Quick Overview

Flow allows you to test design ideas, satisfy evacuation requirements and identify optimal flow rates with pedestrian analysis.


Product Comparison

  Flow MassMotion

Unlimited crowd sizes

Yes Yes

Powerful 3D editing and simulation environments 

Yes Yes

Multithreaded 64-bit crowd simulator

Yes Yes

BIM Compatibility (IFC 2x3)

Yes Yes

Complex crowd scheduling

Yes Yes

Time controlled gates

Yes Yes

Evacuation behaviour

Yes Yes

Circulation behaviour

Yes Yes

Flexible and powerful SQL driven analysis tools

Yes Yes

Realtime review of 3D results

Yes Yes

Image and movie export

Yes Yes

Ticketing and process modelling


Dynamic agent properties


Dynamic agent itineraries


Logical control of agent behaviour


Spreadsheet based scheduling