CFD Simulations of Single- and Twin-Screw Machines with OpenFOAM

CFD Analysis of Oil Flooded Twin Screw Compressors

Modelling of screw compressors using Computational Fluid Dynamics (CFD) offers better insight into the working chamber of twin screw machines when compared with chamber models. As shown by authors in earlier publications, CFD models predict performance of dry gas and refrigeration compressors fairly accurately. However numerical flow models used for modelling of oil flooded twin screw compresso...

Sequential calculation of torque in procedure of twin screw extrusion

The drug making resreach has accentuated on extrusion technology for a long time. The advance of drug bioavailibility, bead manufacturing and granulation is assured by extrusion procedures. There are also diverse effects in resereches with respect to the use of process understanging as a tool in quality management. Many initiatives of FDA such as PAT and QBD are getting accepted. In this survey...

Towards Large Scale Packed Bed Chromatography Simulations with OpenFOAM R ©

Column liquid chromatography (CLC) is a widely used unit operation in biotech and chemical process engineering for purification of target products (e.g. proteins for pharmaceutical agents) from unwanted substances. An aqueous solution containing the mixture of molecules is forced to flow through the chromatography column which is filled with porous particles (beads). While transport through the...

Continuous Granulation with a Twin-Screw Extruder

Analytical Grid Generation for accurate representation of clearances in CFD for Screw Machines

One of the major factors affecting the performance prediction of twin screw compressors by use of computational fluid dynamics (CFD) is the accuracy with which the leakage gaps are captured by the discretization methods. The accuracy of mapping leakage flows can be improved by increasing the number of grid points on the profile. However, this method faces limitations when it comes to the comple...