1. Introduction
At the 1st European Symposium' Storage and Flow of Particulate Solids" that took place at Erlangen in 1974 it was commented [2]:
"The meeting showed that contrary to former years the fundamental work of Jenike on flow of bulk, solids in bins nowadays forms the basis for bin design in Germany as well. In contrast, the mutual, knowledge of process engineers taking effort to obtain flow in bins and of civil engineers being concerned with conservative structural design seems to be small. Certainly some problems could be solved by better cooperation".
Since Erlangen there have been more than 500 publications on the subject of bulk solids technology i(2,3]. Only1 a fraction of those contributed to the development of bulk solids technology. Notwithstanding this, regard cannot be paid to all of the interesting papers in this introduction. Therefore, only a few aspects will be pointed out in order to show how the two complexes design based on the Jenike method and cooperation and common problems of process and civil engineers have developed.
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