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Ready to discover how bramble can transform your workflow? We’d love to hear from you!

We’ll respond to your inquiry within 2 working days. Need an immediate answer? Contact us directly: +44 (0) 1327 630301

Our office hours are:

Monday to Friday: 8.30am – 5.30pm (GMT)

Closed weekends;

Office address:

Bramble CFD Ltd, Catesby Innovation Centre, Catesby Park, Banbury Road, NN11 3FQ

We’re excited to show you how bramble can work for you!

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+44 (0) 1327 630301

Email us

info@bramblecfd.com

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FAQs

Common CFD simulation questions

How do you get your CAD model ready for CFD?

To prepare your CAD model for CFD in bramble, you’ll need to convert it into an STL (stereolithography) file format. STL files provide a triangulated mesh representation of your geometry, which is essential for CFD simulations. This format is widely used due to its efficient depiction of 3D geometries.

Try to keep your geometry clean and watertight for the best meshing and most accurate results. If you are uncertain if your model is ready, contact us and we’d be happy to take a look and walk you through the whole process.

View bramble‘s blog – Preparing geometry for CFD

What is a naming convention and why is it so important?

A naming convention is a standardised approach to naming the parts within your model, ensuring consistency. bramble uses the naming convention to apply mesh recipes and boundary conditions. Plus, by adopting a clear naming convention, you can maintain an organised and efficient design workflow, making it easier to quickly identify and retrieve specific files when needed.

View bramble’s naming convention tutorial

How much does a simulation cost with bramble?

It depends on the complexity of your model, but bramble’s pricing is super transparent. Instead of expensive licenses or hidden fees, you pay per simulation. For example, a full car external RANS simulation would cost around £100. Our full pricing options can be found here or you can contact us for a quote before running anything, so there are no surprises.

What hardware do I need to run simulations?

You have two options for running simulations:

You can utilise cloud-based computing, eliminating the need for in-house hardware investments.

Alternatively, if you prefer on-premises solutions, you’ll require:

  • Computing clusters for running simulations
  • A suitable workstation for pre/post-processing
  • Enough storage for all your simulation data

Bramble CFD provide these solutions as either new, pre-owned, or as a rental option. Contact us, and we’ll help you find the best fit for you.

My results look off, why?

Several factors can affect simulation results:​

  • Geometry Issues: Ensure your CAD model is clean and accurately represents the physical scenario.​
  • Boundary Conditions: Incorrect or inconsistent boundary conditions can lead to erroneous results.​
  • Mesh Quality: A poor-quality mesh can compromise accuracy.​

Bramble CFD’s support team is available to help diagnose and resolve such issues.

How can I be certain I can trust my simulation results?

bramble incorporates inbuilt safety measures to catch errors before they occur, ensuring reliable and accurate simulation predictions. Automated workflows guide you through the CFD process, ensuring correct data entry and consistent methodologies, leading to trustworthy results.

If anything does seem off, do contact us; we’re here to help validate your setup. The best approach is always to compare your results with experimental data or existing benchmarks.

Why are your CFD simulations so cheap?

We’ve optimised everything to be cloud-based and efficient, cutting out expensive software licenses and hardware requirements. Instead of charging for things you don’t use, you just pay for the simulations you run. That means no upfront costs, no wasted resources, just affordable, high-quality CFD.

How much control does your CFD software give me?

Bramble CFD’s software is designed to be user-friendly while offering extensive control over simulations. It provides automated workflows that guide you through the CFD process, ensuring correct data entry. Advanced users can customise simulations to meet specific requirements, balancing ease of use with depth of control.

What are your license costs?

bramble operates without any license or subscription fees. You only pay for the simulations you run, making it a cost-effective solution for CFD analysis.

How long does training take in bramble?

Training is designed to be quick and convenient. Typically, you and your team can be up and running within a morning. Training sessions are conducted via video link, minimising disruption to your day.

We currently use another CFD software, how easy is it to swap over?

Transitioning to bramble is streamlined to minimise disruption. If you’re already familiar with CFD principles, bramble will feel intuitive. We support standard CAD and mesh formats, and our interface is designed to be user-friendly. Plus, we offer onboarding support to make the switch as seamless as possible.

View our Switching CFD software article for more info

How do I set up an account with you?

Contact us via phone +44 (0)1327 630 301 or email us at info@bramblecfd.com. We’ll set up an account for you (and your team) and arrange a training session so you can hit the ground running!

What payment do you take?

We accept BACS payments.

Would I be able to export the case and load .foam or .vtk files into Paraview?

Yes, we export the data in EnSight format, which can be loaded straight into Paraview. After a simulation completes, request “Extra Exports,” this will include the full fluid dataset.

Do the simulations always run for a fixed number of iterations or are they dynamically stopped by convergence criteria (forceCoeffs, residuals)?

They’re dynamically stopped based on convergence criteria. You can monitor force convergence and set a stopping tolerance for total forces or individual components, so you’re not running unnecessary iterations.

Would bramble’s interface be able to cases other than cars, such as helmets, ideally with heat transfer?

Absolutely, bramble isn’t just limited to one type of model. We’ve recently added a conjugate heat transfer (CHT) solver, which means we can handle buoyancy-driven flows and heat transfer problems – perfect for helmets and similar cases!