Standard Historical Last Updated: Nov 10, 2016 Track Document
ASTM E1620-97(2012)

Standard Terminology Relating to Liquid Particles and Atomization

Standard Terminology Relating to Liquid Particles and Atomization E1620-97R12 ASTM|E1620-97R12|en-US Standard Terminology Relating to Liquid Particles and Atomization Standard new BOS Vol. 14.02 Committee E29
$ 75.00 In stock


1.1 In a broad sense, this terminology covers terminology associated with liquid particles dispersed in gas. The principal emphasis, however, is on particles produced by the process of atomization.

1.2 All terms, followed by their definitions, are arranged alphabetically. In addition, the terminology contains several tables wherein terms related to specific subjects are segregated and identified.

1.3 Within the broad scope, the following specific categories are included:

1.3.1 Terms pertaining to the structure and condition of individual particles or groups of particles as observed in nature.

1.3.2 Terms pertaining to the structure and condition of individual particles or groups of particles produced by an atomizing device.

1.3.3 Terms pertaining to atomizing devices according to the primary energy source responsible for spray development. (When more than one term is used for the same device or class of devices, the alternative term is followed by the preferred term.) Definitions of the devices may refer to their construction, operating principle, or distinctive spray characteristics. The atomizers, however, are not classified by their respective areas of application or end use. Moreover, the listed terms are generic and do not include brand names, trademarks, or proprietary designations.

1.3.4 Terms pertaining to statistical parameters involving particle measurement, particle size, and size distribution functions.

1.3.5 Terms pertaining to instruments and test procedures utilized in the characterization of liquid particles and sprays.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

TABLE 1 Summary of Atomizer Terms

Pressure Atomizer (hydraulic atomizer, pressure atomizing nozzle, Lubbock nozzle
pressure nozzle, single-fluid atomizer) variable orifice poppet nozzle (variable orifice pintle nozzle)
cone atomizer (cone spray nozzle)
hollow cone atomizerPneumatic Atomizer (air atomizing nozzle, blast nozzle, gas atomizer, gas-
solid cone atomizer (full cone nozzle) liquid nozzle, twin-fluid atomizer, two-fluid atomizer)
deflector atomizer (flood nozzle, flooding nozzle) air assist nozzle
dual orifice nozzle (duple nozzle) airblast nozzle (air blast nozzle,
duplex nozzle aerating nozzle)
piloted airblast nozzle (simplex airblast nozzle)
Fan Spray Atomizer: prefilming airblast nozzle
even spray atomizer (even flow atomizer)
flat spray atomizer (flat jet atomizer)External Mixing Pneumatic Atomizer
Laskin nozzle
Fog Nozzle
Internal Mixing Pneumatic Atomizer
Impact Atomizer: (impingement atomizer): (aerating nozzle,
pintle atomizer Nukiyama-Tanasawa nozzle,
splash cup atomizer effervescent atomizer)
splash plate atomizer
Centrifugal Atomizer (rotary atomizer, slinger)
Impinging Jet Atomizer (impingement atomizer): rotary cup atomizer (spinning cup atomizer)
doublet atomizer rotary disk atomizer (spinning disk atomizer)
triplet atomizer rotary wheel atomizer
Plain Jet Atomizer (orifice atomizer, plain orifice atomizer, single jet atomizer,Vibratory Atomizer (vibrative atomizer)
straight stream nozzle) electromagnetic vibratory atomizer
simplex nozzle piezoelectric vibratory atomizer
Square Spray NozzleBerglund-Liu atomizer
sonic nozzle
Swirl Atomizer ultrasonic nozzle
Swirl Chamber Atomizer (centrifugal pressure nozzle, swirl chamber vibrating needle atomizer
atomizer) vibrating reed atomizer
by-pass nozzle (bypass nozzle, flowback nozzle, recirculating nozzle, return
flow nozzle, spill nozzle, spill return nozzle, spillback nozzle)Electrostatic Atomizer
dual orifice nozzle (duplex nozzle)
duplex nozzleShear Coaxial Injector
simplex nozzle swirl coaxial injector
variable-area nozzle
Siphon Nozzle (aspirating nozzle)
Sonic Nozzle (sonic-whistle atomizer, ultrasonic nozzle)

TABLE 2 Characteristic Particle Diameters and Distribution Functions

Aerodynamic Diameter
Area (surface) Mean Diameter
DNf, DLf, DAf, DVf
De Brouckere Diameter
Equivalent Volume Sphere Diameter
Evaporative Diameter
Herdan Diameter
Linear (arithmetic) Mean Diameter
Log Normal Distribution
Mean Diameters
Normal Distribution
Nukiyama-Tanasawa Distribution
Relative Span
Rosin-Rammler Distribution
Sauter Mean Diameter
Square Root Normal Distribution
Stokes' Diameter
Upper Limit Log Normal Distribution
Volume Mean Diameter
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Book of Standards Volume: 14.02
Developed by Subcommittee: E29.02
Pages: 7
DOI: 10.1520/E1620-97R12
ICS Code: 01.040.07; 07.030