Last but not least, the discussions relating to the optimization of the pebble bed,
including the two-region pebble bed, wall structure, and friction optimization, are
all promising techniques, which can promote future impactful ideas in the design of
pebble beds.
This book is full of profound, innovative, and instructive insights. It introduces
state-of-the-art research progresses on pebble flow and heat transfer, with interesting underlying physics revealing the complicated interactions and mechanisms in
the HTGR core. We recommend this book to those who are interested in multiphase
flows and heat transfer. The research methods introduced in this book can also be
applied to many other fields such as chemical industries, mineral processing,
geophysical applications, agricultural industries, pharmaceutical industries, energy
production, powder technology, and so on. For professionals, researchers, and
engineering designers working with pebble beds, this book is an excellent reference
and source of inspiration, especially for the future development of HTGR.
July 2020
Goodarz Ahmadi
Distiguished Professor
Clarkson University
Potsdam, USA
Takashi Hibiki
Professor Emeritus
Purdue University
West Lafayette, USA
vi
Foreword by Goodarz Ahmadi and Takashi Hibiki
including the two-region pebble bed, wall structure, and friction optimization, are
all promising techniques, which can promote future impactful ideas in the design of
pebble beds.
This book is full of profound, innovative, and instructive insights. It introduces
state-of-the-art research progresses on pebble flow and heat transfer, with interesting underlying physics revealing the complicated interactions and mechanisms in
the HTGR core. We recommend this book to those who are interested in multiphase
flows and heat transfer. The research methods introduced in this book can also be
applied to many other fields such as chemical industries, mineral processing,
geophysical applications, agricultural industries, pharmaceutical industries, energy
production, powder technology, and so on. For professionals, researchers, and
engineering designers working with pebble beds, this book is an excellent reference
and source of inspiration, especially for the future development of HTGR.
July 2020
Goodarz Ahmadi
Distiguished Professor
Clarkson University
Potsdam, USA
Takashi Hibiki
Professor Emeritus
Purdue University
West Lafayette, USA
vi
Foreword by Goodarz Ahmadi and Takashi Hibiki