- Kaldellis J.,1991, "Parametrical Investigation of the Interaction Between Turbulent Shear Layers and Shock Waves, Including Separation", presented at the "Athens 91" International ASME Conference on the Analysis of Thermal and Energy Systems", pp.913-924, Athens, Greece
- Kaldellis J., Katramatos D., Ktenidis P., 1991, "The Influence of Shock Waves on the Viscous Flow Field of Axial Compressors", ASME Paper 91‑GT‑173, Florida, USA
- Kaldellis J., Kodossakis D., 1991, "The Economic Viability of Small Size Wind Turbine Installations, for the Greek Socio‑Economic Environment. The Impact of the Technological Improvements and the Inflation Rate", 3rd European Symposium on "Soft Energy Sources and Systems at the Local Level", Chios, Greece
- Katramatos D., Kaldellis J., 1991, "3‑D Loss Prediction Based on Secondary Flow and Blade Shear Layer Interaction", ASME Paper 91‑GT‑59, Florida, USA
- Ktenidis P., Kaldellis J., Katramatos D., 1991, "Heat Transfer and Jet Like Profile Appearance for Accelerated Blade Shear Layers in Axial Turbines", "Athens 91" International ASME Conference on the Analysis of Thermal and Energy Systems", pp.899-912, Athens, Greece
- Kaldellis J., Katramatos D., Ktenidis P., 1991, "Effects of the Tip Clearance Flow Field on the Secondary Losses", ASME Paper 91‑GT‑58, Florida, USA
- Ktenidis P., Kaldellis J., 1991, "Current Development in Computer Aided Design Applications for Small Hydro‑Power Machinery", 3rd European Symposium on "Soft Energy Sources and Systems at the Local Level", Chios, Greece
- Ktenidis P., Kaldellis J., 1991, "3‑D Axisymmetric Viscous Internal Flows on Rotating and Stationary Surfaces in Turbomachines" ASME Paper 91‑GT‑196, Florida, USA
- Kaldellis J., 1991, "Simulation of Turbulent Velocity Profiles Appearing on Rotating and Stationary Parts of Subsonic Compressors and Turbines", Eighth Symposium on Turbulent Shear Flows, Vol.II, pp.782-788, Munich, Germany
- Kaldellis J., Ktenidis P., Papadopoulos E., 1991, "Future Possibilities and Aerodynamic Limits for the Design of Advanced Wind Turbine Blades", 3rd European Symposium on "Soft Energy Sources and Systems at the Local Level", Chios, Greece
- Καλδέλλης I, 1991,"Ανάλυση Κόστους-Οφέλους για την Αξιολόγηση Εγκατάστασης Μικρών Ανεμογεννητριών στο Ελληνικό Οικονομικό-Κοινωνικό Περιβάλλον. Επίδραση Μεταβολών της Τιμής των Καυσίμων", 2ο Συνέδριο Περιβαλλοντικής Επιστήμης και Τεχνολογίας, pp.279-287, Πανεπ. Αιγαίου, Λέσβος