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Title: High flow rate nozzle system with production of uniform size droplets

Abstract

Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achievemore » the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity.« less

Inventors:
 [1]
  1. (Bangor, ME)
Issue Date:
Research Org.:
University of Maine
OSTI Identifier:
867554
Patent Number(s):
4962886
Assignee:
Board of Trustees of University of Maine (Bangor, ME) CHO
DOE Contract Number:  
AC02-83CE40626
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
flow; rate; nozzle; production; uniform; size; droplets; method; steps; substantially; liquid; forming; periodically; modulating; momentum; direction; controlled; frequency; generating; component; modulation; phase; spraying; formed; modulated; outlet; form; desired; spray; configuration; according; flows; impinge; sheet; apparatus; rotating; valving; plates; interposed; annular; radial; slots; rotation; separably; differential; angular; velocities; selected; achieve; target; droplet; counter; spaced; amplitude; velocity; downstream; plate; set; viscosity; radial slots; angular velocity; nozzle outlet; production rate; flow direction; flow rate; substantially uniform; annular flow; uniform size; method steps; nozzle apparatus; droplet size; desired amplitude; size droplets; liquid viscosity; /239/

Citation Formats

Stockel, Ivar H. High flow rate nozzle system with production of uniform size droplets. United States: N. p., 1990. Web.
Stockel, Ivar H. High flow rate nozzle system with production of uniform size droplets. United States.
Stockel, Ivar H. Mon . "High flow rate nozzle system with production of uniform size droplets". United States. https://www.osti.gov/servlets/purl/867554.
@article{osti_867554,
title = {High flow rate nozzle system with production of uniform size droplets},
author = {Stockel, Ivar H.},
abstractNote = {Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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