Multiphase flow processes are critical element of many industrial processes. 
Today’s technology and advanced modelling tools allow successful and fast 
simulation of positive displacement rotating multiphase machines within variety of 
CFD solvers and by use of lower order models. Such techniques are then applied 
to design and analyse positive displacement machines such as compressors, 
expanders, roots blowers, pumps etc.

Creating simulations, however, is still a complex process owing to the intricacies of 
physics behind multiphase flows. It is therefore important to be aware of the 
concepts which underpin the models and their applications.

The 4th Short Course/Forum on CFD in rotating positive displacement machines 
will take place at City, University of London on 7th and 8th September 2019 just 
before the 11th International Conference on Compressors and Their Systems. This 
year, the theme of the course is on the speed and efficiency in calculating 
multiphase flows in rotating machinery by use of CFD and lower order models. In 
this course, attendees will get an in-depth experience on stability and accuracy of 
several CFD solvers in calculating multiphase flows in positive displacement 
machines. They will also learn from many experts from around the world about 
advances in grid generation, modelling of leakage flows and conjugate heat 
transfer, latest tools, new techniques, and much more.

R&D in these areas will have significant impact on applications for all rotating 
machinery where energy efficiency is an important issue.