Abstract
Japanese symposium on liquid atomization and spray systems has been successfully held once a year since 1972, with the purpose of the interchange between researchers and engineers in many fields of atomization. Such activity in Japan gave the hopeful impact to other countries, made the opportunity of international exchange, and the first conference was held at Tokyo in 1978.Papers submitted to the domestic seventeen symposiums and the four international conferences covers the wide ranges of studies on liquid atomization correspondind to the developing of industrial techniques. Liquid break-up mechanisms are fully investigated on liquid columns and films, liquid droplets, and liquid jets injected from various nozzles. Many reports on the improvement of atomizers and spray characteristics are presented every time, especially on twin-fluid atomization, and ultra-sonic atomization was concentricly reported in 1985. Atomization of coal-water slurry and flashing atomization were also appeared at the third international conference.Real-time laser measurements of spray based on various optical principles have been brilliantly proposed since 1985. They are very useful for the clarification of liquid disintegration and spray transport phenomena, but have several ploblems to be solved concerning spatial spray dennsity, data management and explanation of spray informations.
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