Abstract
The progress of the two-phase flow research has been divided into four stages i this series of the report. These periods are (I) 1948-1959, (II) 1960-1970, (III) 1971-1979, amd (IV) 1980-1988. A chronological table during period (I)-(IV) composed by columns of development of the theoretical analysis for flow instsbilities, computer codes for thermal-hydraulic analyses in two-phase flow systems, progress of computers, and situation of computer installation in universities in Japan. In this 11th Report, the general view of the Table is described from the historical aspect concerning the development and transition of method-of the theoretical analysis and the computational method for the flow instabilyties in two-phase flow
