Wind Assessment Tool2024-04-19T13:15:33+00:00

Fast and easy way to assess wind comfort for your early stage building design

Fast and easy way to assess wind comfort for your early stage building design

Analyze and improve the wind climate yourself

How to run your wind assessment?

Registration1

  • Register to our platform

  • Buy credits / subscription

Set up wind assessment2

  • Define your project
  • Upload a 3D model
  • Select project location properties
  • Select evaluation criteria (NEN8100 or Lawson)

Run the assessment3

  • Submit your assessment
  • Our experts check your input

  • Our software simulates the wind around your building

Analyze and Improve4

  • Results presented according to the selected criteria

  • Learn how to use the space around your building

  • Ask us to help you optimize the wind climate

Analyze and improve the wind climate yourself

How to run your wind assessment?

Registration1

  • Register to our platform

  • Buy credits / subscription

Set up wind assessment2

  • Define your project
  • Upload a 3D model
  • Select project location properties
  • Select evaluation criteria (NEN8100 or Lawson)

Run the assessment3

  • Submit your assessment
  • Our experts check your input

  • Our software simulates the wind around your building

Analyze and Improve4

  • Results presented according to the selected criteria

  • Learn how to use the space around your building

  • Ask us to help you optimize the wind climate

Pricing

If you want to run just a single wind assessment, then simply pay per assessment, without subscription fee or any other cost.

If you think you will be using the wind tool more often, we offer a subscription including 10 free wind assessments and reduced rates for additional assessments and technical consultancy.

As an architect, you can use the free assessments for tenders or as a teaser to convince your clients of the importance of early wind assessments during the design process. Afterwards, you can buy additional credits on a project basis and charge these costs directly to your client.

Subscription No Subscription
Subscription fee: €3500/year
Free user support:
Free wind assessments: 10
Free consultancy*: 15 min call/assessment 15 min call/assessment
Fee for (additional) wind assessments:
1 credit: (=1 assessment) €550 €750
5 credits: €2500 (€500/assessment) €3500 (€700/assessment)
10 credits: €4500 (€450/assessment) €6500 (€650/assessment)
Fee for additional technical support*:
4 credits: (= 1 hour) €140 €160
20 credits: (5 hours) €650 (€130/hour) €750(€150/hour)

*all prices are excl.VAT

* The free consultancy after each wind assessment comprises a video or telephone call in which the results of the assessment and possible recommendations for mitigation measures will be discussed.

Additionally, Actiflow can provide the following technical consultancy (for an additional fee):

  • Produce additional pictures or illustrations of the results, which are not part of the standard output presented in the wind assessment tool platform (for a description of the standard output, check the FAQ section)

  • Assist in the preparation of the 3D CAD drawings that need to be uploaded in the wind assessment tool

  • Write a report or note describing the results, conclusions and/or recommendations

  • Discuss or set-up wind assessments for you which are outside the scope of the wind assessment tool (the exact scope and limitations of the tool can be found in the FAQ section)

Pricing

If you want to run just a single wind assessment, then simply pay per assessment, without subscription fee or any other cost.

If you think you will be using the wind tool more often, we offer a subscription including 10 free wind assessments and reduced rates for additional assessments and technical consultancy.

As an architect, you can use the free assessments for tenders or as a teaser to convince your clients of the importance of early wind assessments during the design process. Afterwards, you can buy additional credits on a project basis and charge these costs directly to your client.

Subscription No Subscription
Subscription fee: €3500/year
Free user support:
Free wind assessments: 10
Free consultancy*: 15 min call/assessment 15 min call/assessment
Fee for (additional) wind assessments:
1 credit: (=1 assessment) €550 €750
5 credits: €2500 (€500/assessment) €3500 (€700/assessment)
10 credits: €4500 (€450/assessment) €6500 (€650/assessment)
Fee for additional technical support*:
4 credits: (= 1 hour) €140 €160
20 credits (=5 hours): €650 (€130/hour) €750(€150/hour)

*all prices are excl.VAT

Actiflow Wind assessment tool pricing table

*all prices are excl.VAT

* The free consultancy after each wind assessment comprises a video or telephone call in which the results of the assessment and possible recommendations for mitigation measures will be discussed.

Additionally, Actiflow can provide the following technical consultancy (for an additional fee):

  • Produce additional pictures or illustrations of the results, which are not part of the standard output presented in the wind assessment tool platform (for a description of the standard output, check the FAQ section)

  • Assist in the preparation of the 3D CAD drawings that need to be uploaded in the wind assessment tool

  • Write a report or note describing the results, conclusions and/or recommendations

  • Discuss or set-up wind assessments for you which are outside the scope of the wind assessment tool (the exact scope and limitations of the tool can be found in the FAQ section)

Free webinar wind assessment tool

Do you want to know more about the new Actiflow wind assessment tool?
Register for one of our free webinars and receive a free credit = 1 free wind assessment!
The webinar will include a live demo, showing you how to set up your own wind assessment and analyze the results.

Go to our free webinar Wind Assessment Tool

FAQ

What is the Actiflow wind tool?

How can I register for the wind assessment tool?2024-04-17T09:14:04+00:00

If you want to register for the first time, please go to https://actiflowportal.com, and click on the word “Registration” below the Login button on the left side of your screen.

As a next step, please fill out all fields of the registration form. The fields indicated with a red asterisk (*) are obligatory. When all fields are filled out, then click the “Register” button at the bottom of the form.

After registration, you will have access to the tool using your email address and password.

How do I login?2023-10-15T13:27:28+00:00

If you want to log in, please go to https://actiflowportal.com, and fill out your email address and the password you selected during your registration process. Then click the “Login” button and you are ready to go

Why should I choose for a yearly subscription?2024-04-17T09:19:48+00:00

If you want to run just a single wind assessment, then simply pay per assessment, without subscription fee or any other cost.

If you think you will be using the wind tool more often, and you value free consultancy, then go for our subscription and enjoy the following benefits:

  • 10 free wind assessments
  • Largely reduced rates for additional assessment and support credits (please check our website https://actiflow.com/wind-assessment-tool/ for the exact fees with and without subscription)
  • Results of all your wind assessments will stay available on our platform for as long as your account is active

If you consider the difference in pricing of the wind assessments, you already benefit from a subscription as soon as you run 5 wind assessments per year.

 

What is the standard output of the wind assessment tool?2023-10-15T13:38:36+00:00

The output mainly depends on the assessment method you select when defining a project

For now, you can choose between:

  • NEN8100:2006, mainly used in the Netherlands and Belgium
  • Lawson LDDC, a widely used version of the Lawson criteria

The standard output of a wind assessment according to NEN8100 consists of:

  • Two pictures showing wind discomfort and wind danger as defined in the NEN8100 criteria. These images show the exceedance probability of a wind speed threshold of 5 m/s and 15 m/s respectively. The pictures also include a legend for interpretation.

 

Below the 2 main images, you will find a list of additional output files:

  • A zip file containing all images for easy download
  • A zip file with 3D data in .csv format for visualization of the results in other software packages
  • Pictures of wind discomfort (exceedance probabilities) per wind direction (12 in total)
  • Pictures of wind discomfort according to the activities as mentioned in NEN8100

 

The standard output of a wind assessment according to Lawson LDDC consists of:

  • Two pictures showing wind discomfort and wind distress as defined in the Lawson LDDC criteria. The pictures also include a legend for interpretation.

Below the 2 main images, you will find a short list of additional output files:

  • A zip file containing all images for easy download
  • A zip file containing all images for easy download
  • Pictures of wind discomfort: overview and zoomed in on the project building
  • Pictures of wind distress: overview and zoomed in on the project building
How and when do I pay for a wind assessment?2024-04-17T09:23:39+00:00
  • You pay with credits. After registration, you will be able to buy credits in our portal
  • You can choose to buy credits for wind assessments or credits for our expert support
  • After your online purchase, we send an invoice to the email address you provided us as invoicing address
  • After buying credits, you can use them to request a wind assessment (or support)
  • We only charge credits after delivering proper results. We will help you to make sure that you only pay for a result that is useful to you. Therefore, we do 2 manual checks during the assessment process:

    1.As soon as you request a new wind assessment, we will check your input to make sure it complies with the technical requirements of our tool. If not, we will get in touch with you, to explain you what should be corrected. We will then ask you to upload the corrected data again, without charging any credits.

    2.Before releasing any results to you, we check if the wind simulations are performed correctly and if the results look realistic. If not, we will make sure to rerun the wind simulations at our expense. In this case, we will let you know when you can expect your final results.

  • Please note that we do not check if the information you provide us is realistic or correct. Therefore, we do not guarantee the correctness of the assessment results.
How does the tool work?2023-10-15T13:49:38+00:00

The Actiflow Wind Assessment Tool uses Computational Fluid Dynamics (CFD) to simulate the wind around your project building for 12 different wind directions.

Based on the 3D CAD models uploaded by the user, the tool automatically creates a circular domain centered around the project building, with a diameter of about 3 km.

In this domain, a computational mesh is constructed, consisting out of several millions of volume cells.

At the boundaries of the domain, boundary conditions are imposed:

  • For the ground surface, the user is requested to select the most appropriate description of the surrounding terrain in 4 quadrants. Based on this information, we define a surface roughness
  • At the sides of the domain, we impose an atmospherical boundary layer profile for the wind velocity

The 3D model, the mesh and the boundary conditions are then used to execute 12 CFD simulations (12 wind directions).

The CFD results are then combined with the local wind statistics to calculate exceedance probabilities according to the selected norm/guideline.

Finally, the results are visualized, and the resulting pictures can be downloaded by the user.

During the assessment process, we manually check your input to ensure that it complies with the technical requirements, and we also check the output, to make sure that the CFD simulations have ran successfully. If something goes wrong, we do not charge you any credits.

What can I use the wind assessment tool for?2023-10-15T13:52:53+00:00
  • The Actiflow wind assessment tool is developed to enable an easy and fast analysis of the wind climate around a new real estate development, in an early phase of the building design.
  • We propose to use the tool to understand the impact of your building design on the local wind climate in the conceptual design phase, in which you determine the shape and orientation of the building volumes.
  • Optionally, you can compare multiple conceptual design variants, and find out which variant has the best wind climate.
  • By dealing with these wind effects at the start of your design process, you will avoid problems later and you can make sure the final wind climate around your building will comply with local norms and guidelines.
  • As the technology behind the wind assessment tool is optimized for maximum speed, the tool cannot be used to prove final compliance with these norms and guidelines, e.g. as part of a planning or permit application (see FAQ Why can the results not be used for planning or permit applications?)
What are the limitations of this tool?2024-04-17T09:28:14+00:00

To ensure that our wind assessment tool is fast and easy to use, the tool has some limitations:

  • The tool can only handle simple 3D building volumes, without façade details or any steps smaller than 1 meter. If you upload a more detailed model, the tool will automatically remove the details, or you will be contacted by us with instructions how to simplify your model
  • No vegetation like trees or bushed can be included in the model.
  • We do not allow for height differences in the terrain. The ground level is assumed to be completely flat.
  • When defining a project, you will be asked to describe the terrain between 300m and 1500m away from your project, in 4 sectors: N-E, E-S, S-W and W-N. In more detailed studies, we would account for the roughness of the surrounding terrain in much more detail, but this would make the input process more complex.

The limitations mentioned above will have an impact on the results of the wind assessment, but for the purpose of the tool (identifying and mitigating risks in an early phase of the development), the effect of the limitations will be relatively small. Risks of wind discomfort or wind distress will be identified in the right regions, which is exactly what you want to know in an early phase of a new development.

Why can the results not be used for planning or permit applications?2023-10-16T18:33:07+00:00
  • The Actiflow wind assessment tool is specifically developed for fast and easy wind assessments in an early phase of the building design. To ensure that the tool is fast and easy to use, the tool has some limitations as mentioned in the FAQ “What are the limitations of this tool?”
  • Although the results of the wind assessment tool are visualized as specified in commonly used norms and guidelines (like NEN8100 or Lawson LDDC), the technology and methods behind the tool do not fully comply with the quality criteria and/or best practice guidelines of these norms, due to the limitations mentioned above.
  • As most authorities request wind assessments to be performed according to specific norms or guidelines (like NEN8100 or Lawson), the results of our tool cannot be used to prove compliance with these norms.
  • However, besides the wind assessment tool, Actiflow is also offering services and studies that do comply with all norms and guidelines. These studies are less automated and a little more expensive, but please contact us (contact@actiflow.com) if you would like more information about these studies. And please make sure to mention if you already used the wind assessment tool for your project, because in that case, you are entitled to a discount.

 

Can I use this tool for parametric optimization of my building design?2023-10-16T18:37:32+00:00
  • No, this tool is not an optimization tool
  • Most of these parametric optimization tools have very limited capabilities to account for wind. The simulation of wind is quite complex and time consuming, which is problematic if you want to assess tens or hundreds of design variants
  • Even if wind is part of a parametric design tool, the reliability of the results will be low.
  • However, we still think that parametric optimization tools are very valuable tools for architects to make informed decisions, and to bring the amount of design variants down to a few.
  • These few variants can then be assessed with more reliable tools like the wind assessment tool of Actiflow.
  • Optionally, for these few variants, you could also consider to perform a more detailed assessment of the other building physics aspects, like shading or energy efficiency. Please contact us for more information (contact@actiflow.com).
  • The different assessments of these few variants can then be compared and presented to the client.

 

How to use the tool with multiple users within 1 company?2023-10-16T18:42:04+00:00
  • In principle, user accounts are personal. An account is linked to a personal email address, and we use that address to inform the user about purchases, progress of wind assessments, etc.
  • If you or your company prefers to use the tool without subscription, all users can have their own user account. Without subscription, there is no disadvantage to having multiple accounts within 1 company.
  • If you or your company would like to subscribe to our tool, then this subscription, and all advantages related to it, are linked to one account. In this case, if you have multiple users, we suggest to make a separate email address for our tool, which is then linked internally to all email addresses of the users. In this case, all users use the same account and can benefit from the subscription. Moreover, all users will be informed of any new purchases or assessments

 

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