2. Typical mixing flows
The separation of climatic environments takes place at the interface between the two environments to be separated, for example the boundary between the general environment of a workshop and the controlled, localized environment around a product to be protected. In this zone, the flow can simply be represented, depending on the configuration, by two flows typical of free shear flows:
the mixing layer for the interface between two environments of different speeds;
the flat jet (or air curtain), widely used to significantly improve separation.
In this section, we limit ourselves to describing these two flows from a phenomenological point of view, and to giving the laws describing their mean behavior.
The Ultimate Scientific and Technical Reference
This article is included in
Environment
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Typical mixing flows
Particles in flows
Bibliography
Events
ContaminExpo – Exhibition and conference on contamination control and cleanrooms, held every two years in Paris (odd-numbered years):
Standards and norms
ISO
- Classification de la propreté particulaire de l'air, NF EN ISO 14644-1 (février 2016). - ISO 14644-1 - 2015
- Ergonomics of thermal environments – Analytical determination and interpretation of thermal comfort by calculating PMV and PPD indices and local thermal comfort criteria. - ISO 7730 - 2005
- Filtres à air à haute...
AFNOR
Regulations
World Health Organization (WHO) – Ambient air quality and health. Fact Sheet No. 313 (2016).
http://www.who.int/mediacentre/factsheets/fs313/fr/
Directive 2008/50/EC of the European Parliament and of the Council of May 21, 2008 on ambient air quality and cleaner air for Europe.
...
Patents
Device for protecting an operating area and corresponding method (FR3008782).
Air flow diffusion system (FR2973100).
Filtered air diffuser (FR2900718).
Method and device for close protection of a work surface by means of a clean air flow (FR2750199).
Directory
Organizations – Federations – Associations (non-exhaustive list)
Anses (Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail) :
ASPEC (French reference organization for all those involved in contamination control in cleanrooms and controlled-atmosphere zones):...
The Ultimate Scientific and Technical Reference
