Holographic Determination of the Droplet Size Distribution of a Simulated Defoliant Spray in a 400-Knot Airstream PDF Download
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Author: D. L. Davidson
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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Book Description
The feasibility of determining the droplet size distribution of a simulated defoliant spray in a high-velocity airstream using in-line holographic photography was successfully demonstrated. Holographic droplet size data were obtained in the 400-knot airstream contained within a 37-inch-diameter duct at spray flow rates from 3 to 117 gpm and spray injection pressures from 16 to 64 psig. Average diameter of the spray droplets was approximately 21 microns. Droplet size distribution did not vary significantly with either spray flow rate or injection pressure. The holographic measurement system exhibited an apparent diametric resolution limit of approximately 10 microns. Operational reliability of the holograph was satisfactory. (Author).
Author: D. L. Davidson
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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Book Description
The feasibility of determining the droplet size distribution of a simulated defoliant spray in a high-velocity airstream using in-line holographic photography was successfully demonstrated. Holographic droplet size data were obtained in the 400-knot airstream contained within a 37-inch-diameter duct at spray flow rates from 3 to 117 gpm and spray injection pressures from 16 to 64 psig. Average diameter of the spray droplets was approximately 21 microns. Droplet size distribution did not vary significantly with either spray flow rate or injection pressure. The holographic measurement system exhibited an apparent diametric resolution limit of approximately 10 microns. Operational reliability of the holograph was satisfactory. (Author).
Author: Carlos J. Alcabes
Publisher:
ISBN:
Category : Drops
Languages : en
Pages : 144
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Author: Joseph Arena
Publisher:
ISBN:
Category :
Languages : en
Pages : 192
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Author: D. Koroyannakis
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: David S. Mahler
Publisher:
ISBN:
Category : Herbicides
Languages : en
Pages : 92
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Book Description
This work investigated the applicability of using hot-wire instrumentation for the measurement of the droplet size distributions of insecticide and herbicide sprays. Under Phase I, mineral oil was used as a model liquid. Tests were performed to determine the effects of eccentric collisions, longitudinal variations along the wire, probe contamination, and temperature stability. A calibration curve was obtained for mineral oil which is different than that of water. This calibration curve shows that the hot-wire approach is accurate for a size range of 1 to 240 micrometers. This range is more than adequate for existing insecticide spray apparatus. Tests using actual insecticides have shown that the calibration curve obtained for mineral oil may be used for at least the two insecticides investigated.
Author: James David Kearns
Publisher:
ISBN:
Category :
Languages : en
Pages : 306
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Author: ME. Teske
Publisher:
ISBN:
Category : Droplet size distribution
Languages : en
Pages : 13
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Book Description
Various experimental techniques have been developed to recover droplet size distributions emitted from rotary atomizers. These techniques include both single line-of-sight measurements through the center of the spray cloud and volume weighted averaging from multiple passes through portions of the spray. Because the droplet size distribution of a spray is one of the most important inputs into aerial spray prediction models such as AgDRIFT®, a consistent, widely-accepted standard for rotary atomizers should be developed and implemented with regard to this measurement. No such standard currently exists. The present paper summarizes current measurement techniques and develops a simple computer model to predict droplet movement following emission from a rotary atomizer in a wind tunnel. Qualitative comparisons are made with available data to demonstrate the effects of single line-of-sight measurements and weighted averaging from multiple passes.
Author: Rogério Gomes Pimentel
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 0
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Author: ADNAN SALEH AL. AITHAWI
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ISBN:
Category :
Languages : en
Pages : 0
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Author: Richard M. Schotland
Publisher:
ISBN:
Category :
Languages : en
Pages :
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