Guest editorial

Previous Turbomachinery special issues of this Journal have followed earlier European Turbomachinery Conferences. This tradition continues with the current Special Issue derived from the 5th conference. These Special Issues provide a valuable core of high quality Turbomachinery papers for Proceedings Part A, covering interesting and topical subjects. The papers have been evaluated as Journal standard through the thorough review procedure of the conference. That selection has then been scrutinized and conŽ rmed by the conference organizing committee. Final acceptance has been established by a further review of these conclusions by two members of the Editorial Board of this Journal.