CFD Simulation Blog

CFX Berlin took part in the 9th International Conference on Compressor and Refrigeration (ICCR)

During the whole conference, we answered a lot of questions at our stand together with Zhenya Yang from our TwinMesh channel partner PeraGlobal. In the technical sessions, we gave three presentations on TwinMesh applications

International TwinMesh™ Users Summit 2019, October 28-29, Vicenza, Italy

The first International TwinMesh™ Users Summit will take place on 28th and 29th October 2019 at the TwinMesh™ exhibition booth of the International CAE Conference in Vicenza, Italy. Come and meet us and other TwinMesh™ users!

How TwinMesh™ helps to improve innovative pump technology

We are pleased to announce that Kolektor is presenting their latest novelty, the core pump, at the well-known CTI Symposium which takes place from 13-16 May 2019 in Novi, Michigan, USA. On their LinkedIn profile Kolektor states: "Main pump...

International researchers from KITECH in Korea present their latest work using TwinMesh™ at the 29th IAHR Symposium on Hydraulic Machinery and Systems

In their paper “Preliminary Design and Performance Analysis of a Positive Displacement Hydraulic Turbine” Arihant Sonawat supervised by Dr. Jin-Hyuk Kim and their colleagues looked into the causes of pulsations in torque, pressure, and flow rate due to the...

TwinMesh™ 2019 released

We are pleased to anounce the release of TwinMesh™ 2019 – another big and important step in CFD based analysis and design of rotary positive displacement machines. TwinMesh™ 2019 offers developers of rotary PD machines a further improved workflow and many exciting new features. Read further for getting information about enhancements and new features in TwinMesh™ 2019.

TwinMesh Webinar

Next free TwinMesh webinar on 9th of July 2019 at 3pm (CEST): find out more about how TwinMesh and ANSYS CFX allow for reliable 3D CFD analysis of rotary positive displacement machines such as screw compressors, lobe pumps, vane pumps, Wankel engines, gear pumps, progressive cavity pumps, or scroll expanders!

Preview of Conjugate Heat Transfer (CHT) for PD Machines Using TwinMesh™ 2019

Preview on new features in TwinMesh™ 2019: CFD simulation of a SRM screw compressor with heating of rotor and casing solids with ANSYS CFX. We implemented User Fortran routines in TwinMesh 2019 that connect non-overlapping parts of the fluid-fluid interfaces to the interior solid surfaces to account for temperature and heat flux exchange.

“The Momentum Keeps Up”

Good news is on your way – the success of the revolutionary meshing solution TwinMesh™ continues and grows more and more! Scientific papers, conference presentations, success stories, validation projects, and new reference customers – a lot of things happened during the last couple of months and it is a great success.

Preview of Mesh Interpolation and Non-Reflective Boundary Conditions in TwinMesh™ 2019

The next preview of new features in TwinMesh™ 2019: we implemented a mesh interpolation method in User Fortran. So far, the time step size of the CFD simulation has to be set according to the desired revolution speed and the prescribed angle increment of the pre-generated meshes from TwinMesh. Now it is possible to set an arbitrary time step size, and the corresponding mesh is calculated with a spline interpolation between the pre-generated meshes at run-time.

Preview of Non-Reflective Boundary Conditions in TwinMesh™ 2019

Preview on new features in TwinMesh™ 2019: we have implemented non-reflective boundary conditions (NRBC) in ANSYS CFX via User Fortran in a stable and robust way so that they can be used for positive displacement compressors instead of the standard openings which are reflective (RBC). While RBC lead to standing waves, especially at pressure side with mass flow strongly pulsating and even flow reversal, NRBC allow pressure fluctuations from pressure port to travel to the outlet and leave there without any artificial reflections so that mass flow is more uniform and realistic.

TwinMesh 2017 released

New Release TwinMesh 2017 is now available. New features of TwinMesh 2017 include vane pumps and orbital motor as new machine types, variable pitch for screw machines, many function and GUI improvements and a tet grid generator for axial gaps. Click here to find out what is new in TwinMesh 2017!

TwinMesh helps developing waste heat recovery system

With its working principle of a positive displacement machine the scroll expander is a real challenge for 3D CFD. Luckily, BOSCH knows where to look for experts in that field. CFX Berlin provides the right tools, and experience to take such a challenge. Find here a presentation on numerical simulation of a scroll machine using TwinMesh and ANSYS CFX.

TwinMesh and its customer numbers accelerate

2016 has been an exciting year for us. With a steady increase in customer numbers we are very happy to welcome our latest TwinMesh users: Danfoss and Scherzinger Pump Technology. Moreover, we would like to share what Eaton has to say about TwinMesh and CFX.

Merry Christmas and a Happy New Year 2017

Merry Christmas and Happy New Year from TwinMesh & CFX Berlin Software GmbH

CFD Simulation and Result Validation for a Twin Screw Expander Including Leakage Flows

It Works! Read this Blog about CFD Simulation and Result Validation for a Twin Screw Expander Including Leakage Flows. Measurements come from TU Dortmund, CFD Simulation was done by CFX Berlin.

TwinMesh 2016 – released

We are happy to inform you that our new release TwinMesh 2016 is now available. Find out what is new in TwinMesh 2016.

CFX Berlin at 2016 Purdue Conferences : CFD Analysis of a Dry Scroll Vacuum Pump Including Leakage Flows

During the 2016 Purdue Conference on July 11-14 we had the opportunity to present two of our recent works on CFD of positive displacement machines. One popular topic was the industrial application of scroll machines. Find and read the full paper here!

New Rotary Lobe Pump Design Standard Set with CFX Berlin’s TwinMesh

Hugo Vogelsang Maschinenbau GmbH, one of Germanys top leading rotary lobe pump manufacturers, uses TwinMesh for their CFD analysis to improve performance, durability, and life time for their rotary lobe pumps.

TwinMesh Blog