Fluid Phenomena in Energy Exchanges Section—IAHR Chair: Yassin Hassan PAST & PRESENT ACTIVITIES: Two Working Group on Advanced Nuclear Reactor Thermal Hydraulics Meetings were held: 2001 in Obninsk, Russia—activities included fluid flow and thermal hydraulics in reactor components cooled by liquid metals, gases and water. 2004 the meeting was about “Hydrodynamics and heat transfer in single and two-phase flow of liquid metals”. October 2005, Avignon, France special session on heavy metal fluid flow transport and thermodynamics. During NURETH-12. * Co-sponsored the Symposium on the Advances in the Modeling Methodologies of Two-Phase Flows Meeting (SHF/IAHR), Lyons, France, November 24-26, 2004. * Co-sponsored a NASA conference on the computation Fluid Dynamics, 2005. * Delivered a tutorial seminar on computational fluid dynamics applications at ICONE-2004, 2005, 2006, 2007. Delivered a tutorial related to multiphase flow and transport phenomena cosponsored by Fluid Engineering Division of ASME, 2005. Several reports are issued related to these meetings (See below). International Symposium on Fluid, Control, Measurement and Visualization: FLUCOME 2007, Tallahassee, Florida, September 2007. Two special sessions related to Nuclear Applications organized at 32nd IAHR Venice Congress with 10 technical articles to be presented orally. Future Planned Activities: : It is the time to focus on to reduce CO2 emission and thinking about solving the shortage of potable water by considering a mix of options including nuclear. This activity is suggested by one of the section members. Other activities as Benchmarks Exercises in CFD (Mixing in various components and situations) Update the section webpage. Seminars at various conferences Strength the relations with other organizations to enhance the multisplinary activities. Participation at IAHR Congress, August 2009 by sponsoring several sessions related to Multi-phase Flows and co-sponsoring sessions with Numerical Modeling and Instrumentations sections.