Institute for Liquid Atomization and Spray Systems
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The Institute for Liquid Atomization and Spray Systems, (ILASS), is an organization of researchers, industrial practitioners and students engaged in professional activities connected with the spraying of liquids and slurries. Annual technical conferences are organized by each of the ILASS organizations ILASS-Americas, ILASS-Asia, and ILASS-Europe. ILASS-International is board made up of representatives from the three regional ILASS Institutes.
ILASS meetings have practitioner and researchers from many areas where spray technology is utilized. This includes injectors for gas turbines, rockets, and diesels, agricultural and medical sprays, industrial sprays, fire protection, paint and coating applications, and many others. This breadth of spray applications at this conference and technical community provides cross-fertilization of research methodologies and innovative efforts. Mechanical, agricultural and chemical engineers all participate in these meetings.
The ILASS (Institution of Liquid Atomization and Spraying Systems) organization is an international organization dedicated to the advancement of knowledge and technology in the field of liquid atomization and spray systems.
The ILASS global organization has 3 branches: ILASS-Europe, ILASS-Americas and ILASS Asia. ILASS-Europe was the first to be established, and was founded in 1982 as initiative of the late Prof. Paul Eisenklam. The first Annual General Meeting took place at UMIST 1983. The institute’s objectives have remained unchanged since that time: “… to promote the science and applications of liquid atomization and spray systems by means of sponsorship of annual scientific meetings, promotion and preparation of technical papers, and promotion of membership in ILASS Europe among interested and qualified persons…”
Atomization and Sprays Journal Cover
Prof. Norman Chigier, one of the leaders of the atomization and spraying systems community and the ILASS organization founded in 1991 the Atomization and Sprays Journal that focuses publishing, peer-reviewed papers on the topics that are central to ILASS.
ILASS organizes conferences, and symposia annually in each of its branches, when every 3 years, the entire community is gathered in a larger conference, entitled ICLASS (International Conference of Liquid Atomization and Spraying Systems).
Three awards are granted each conference, honoring Professor Paul Eisenklam, Professor Arthur H. Lefebvre, and Professor Y. Tanasawa.
The International Commission for Optics (ICO) was created in 1947 with the objective to contribute, on an international basis, to the progress and dissemination of the science of optics and photonics and their applications. It emphasises the unity of the crossdisciplinary field of optics.
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A spray nozzle or atomizer is a device that facilitates the dispersion of a liquid by the formation of a spray. The production of a spray requires the fragmentation of liquid structures, such as liquid sheets or ligaments, into droplets, often by using kinetic energy to overcome the cost of creating additional surface area. A wide variety of spray nozzles exist, that make use of one or multiple liquid breakup mechanisms, which can be divided into three categories: liquid sheet breakup, jets and capillary waves. Spray nozzles are of great importance for many applications, where the spray nozzle is designed to have the right spray characteristics.
Arthur Henry Lefebvre was a British scientist and an innovative leader in the science and engineering of fuel sprays and combustion in gas turbines.
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Ultrasonic nozzles are a type of spray nozzle that use high frequency vibrations produced by piezoelectric transducers acting upon the nozzle tip that create capillary waves in a liquid film. Once the amplitude of the capillary waves reaches a critical height, they become too tall to support themselves and tiny droplets fall off the tip of each wave resulting in atomization.
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Atomization and Sprays is an international peer-reviewed scientific journal published monthly by Begell House. Founded by Norman Chigier in 1991, it presents original archival-quality research on the physical structure of liquids undergoing breakup and on their interaction with gaseous flow and solid surfaces. Currently it is the only journal that focuses exclusively on atomization and sprays, covering work on theoretical, computational and experimental aspects of the subject.
A spray is a dynamic collection of drops dispersed in a gas. The process of forming a spray is known as atomization. A spray nozzle is the device used to generate a spray. The two main uses of sprays are to distribute material over a cross-section and to generate liquid surface area. There are thousands of applications in which sprays allow material to be used most efficiently. The spray characteristics required must be understood in order to select the most appropriate technology, optimal device and size.
The International Institute of Refrigeration (IIR), is an independent intergovernmental science and technology-based organization which promotes knowledge of refrigeration and associated technologies and applications on a global scale that improve quality of life in a cost-effective and environmentally sustainable manner, including:
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Patternation is the specialized technical art of performing quantitative measurements of specific properties of particles within a spray and visualizing the patterns of this specific property within the spray. In order to understand patternation, we need to consider the role sprays play in our daily lives.
Harvey Berger was a scientist and inventor. He invented the modern commercial ultrasonic nozzle, which in its application has brought many benefits to the fields of research, combustion and manufacturing. Berger founded Sono-Tek Corporation based on this technology and while working at the company he made contributions to the fields of combustion, semiconductor manufacturing, electronic printed circuit board manufacturing, drug eluting stents and spray drying. Berger died in August 2007 after a struggle with liver cancer. He was survived by his wife Donna and by his three children, Michael, Robyn and Barbara.
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Nelamangala Vedavyasachar Madhusudana is an Indian physicist and an emeritus scientist at Raman Research Institute. Known for his research on liquid crystals, Madhusudhana is an elected fellow of Indian Academy of Sciences and Indian National Science Academy. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 1989.
Rotary atomizers use a high speed rotating disk, cup or wheel to discharge liquid at high speed to the perimeter, forming a hollow cone spray. The rotational speed controls the drop size. Spray drying and spray painting are the most important and common uses of this technology.
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