THERMO AND FLUID DYNAMICS IN PEBBLE BEDS

Automatic translation: In connection with proof of the often emphasized high safety potential of high-temperature reactors in the event of extreme accidents, heat transport in the core plays an important role under normal and accident conditions. This work attempts to compile the most important literature on the subject of heat transport in spherical fills and to make it easier to deal with by dividing it into chapters. For each chapter, the problem and the most important results are outlined in an overview. This structure is based primarily on the thermodynamic and fluid dynamic equations and on the model ideas from which temperature distributions and flow profiles can be determined and less on a phenomenological classification of the processes associated with heat transport. However, in order to achieve the greatest possible user-friendliness for this overview, the individual chapters were intended to be independent from one another and works that contain contributions to different chapters were listed several times. This literature compilation is by no means complete. However, we believe that the work listed here provides a thorough and comprehensive insight into the field of thermo- and fluid dynamics in spherical beds.