Non-Ideal Compressible Fluid Dynamics (NICFD)


The main objectives of the SIG 49 are:

  • Spread the knowledge of NICFD
  • Bring together under the same umbrella researchers working in NICFD and interested in diverse engineering applications
  • Support the organization of the thematic workshops
  • Provide a platform to exchange information between academia and industry
  • Establish benchmarks for NICFD code validation
  • Establish an education network for undergraduate and graduate students as well as industry practitioners in the disciplines pertinent to NICFD
  • Provide best practices guidelines for NICFD and possibly organize best practice courses following the example set by other SIGs

In 2016, a first successful seminar on NICFD was organized in Varenna, Italy, where the international NICFD community gathered for two days ( In 2018, the second event of the series took place at the Ruhr Universität Bochum, Germany (

Motivation & Landscape:

Non-Ideal Compressible Fluid-Dynamics (NICFD) has recently been established as a sector of fluid mechanics dealing with flows of dense vapours, supercritical fluids and two-phase fluids, whose properties significantly depart from those of ideal gases. NICFD flows occur in numerous heterogeneous industrial applications, such as unconventional turbomachinery (ORC turbines, scCO2 compressors), combustors operating with supercritical fluids, heat pumping systems, and in many chemical processes.

During the past years, the community of scientists engaged in NICFD has consistently grown. In Europe alone, active research groups in the field are present in Italy, Germany, Netherlands, and France, to name a few. SIG 49 is intended to promote the exchange of scientific information, to encourage and consolidate the interaction between NICFD researchers and professionals, with a special emphasis on the progress in research, development, and applications of the topics related to the field of propulsion and power. NICFD themes range from the theoretical foundations to advanced numerical and experimental practices and applied technologies.