Particle flow, fluid/solid mechanics, and heat transfer are very important to many technologies and applications of the advanced gas/water nuclear reactors. For example, in the pebble bed reactor, some important issues, including the discharging flow regime, pebble dispersion/diffusion, helium-pebble heat transfer, pneumatic conveying of absorber spheres, and creep deformation mechanisms, are closely related to and on the fundamental basis of particle flow, fluid/solid mechanics, and heat transfer. Thus, to better understand the relevant knowledge of particle flow, complex interactions (including multiphase thermal hydraulics), flow mechanics, and solid mechanics, and heat transfer (including interparticle conduction, gas-particle convection, particle-wall conduction, and radiation) will certainly help improve the development of advanced nuclear reactors.

To promote communication between researchers of nuclear engineering, we invite investigators to contribute original research as well as review articles that will stimulate continuing effects to understand the fundamentals, mechanisms, and technologies of particle flow, fluid/solid mechanics, and heat transfer in advanced reactors.

Potential topics include, but are not limited to:

• Particle flow/pebble flow/solid mechanics and heat transfer in advanced gas reactors
• Fluid flow/multiphase flow and heat transfer in advanced water reactors
• Experimental measurement and verification of flow dynamics and transport parameters
• Physical and chemical interaction on the interfaces
• Other issues relevant to advanced nuclear reactors