Запис Детальніше

Hydrocutting of frozen food products

Електронний науковий архів Науково-технічної бібліотеки Національного університету "Львівська політехніка"

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Поле Співвідношення
 
Title Hydrocutting of frozen food products
 
Creator Pogrebnyak, Volodymyr
 
Contributor National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine
 
Subject jet-shaping head
water-jet cutting
polymer solution flow
hydrodynamic field
elastic deformation
food products
water-polymer jet processing
 
Description The article aims to determine the peculiarities of macromolecule deformation
behavior under conditions of a jet-shaping head that would allow to solve the issue related to the
mechanism of increasing water-jet cutting power with polymer additions. The roles of longitudinal
and transverse velocity gradients in the manifestation of distinctive features of polymer solution
flows are analysed.
In converging polyethyleneoxide solution flow macromolecules are forced by a hydrodynamic
field to rather strong stretching that causes the dynamic structure formation in solutions. There have
been studied experimentally velocity fields and their gradients as well as the degree of
macromolecule unrolling under pattern conditions of a jet-shaping head in polyethyleneoxide
solutions flow. In converging polymer solution flow macromolecules are forced by a hydrodynamic
field to rather strong (~ 60 % and more) stretching that causes the field restructuring. The
determined regularities of macromolecules behavior in the flow under conditions of a jet-shaping
head and manifested in this case effects of elastic deformations have paramount importance in
understanding the mechanism of “anomalously” high cutting power of water-polymer jet. The work
for the first time makes it possible to explain the nature of increased water-jet cutting power with
polymer additions when cutting food products. Understanding the nature of increased cutting power
of water-polymer jet will make it possible to develop recommendations on choosing regimes for
water-polymer jet processing of food products by cutting.
 
Date 2018-03-06T14:29:58Z
2018-03-06T14:29:58Z
2017-01-01
2017-01-01
2017-05-07
 
Type Article
 
Identifier Pogrebnyak A. Hydrocutting of frozen food products / Andriy Pogrebnyak, Volodymyr Pogrebnyak // Ukrainian Journal Of Mechanical Engineering Andmaterials Science. — Lviv : Lviv Politechnic Publishing House, 2017. — Vol 3. — No 1. — P. 1–8.
2411-8001
http://ena.lp.edu.ua:8080/handle/ntb/39546
 
Language en
 
Relation Ukrainian Journal Of Mechanical Engineering Andmaterials Science, 1 (3), 2017
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[1] Pohrebniak A. V. Vysokoeffektivnoe hidrorezanie tverdykh pishchevykh produktov i materialov, A. V. Pohrebniak, Upravlenie reolohicheskimi svoistvami pishchevykh produktov, M., MHUPP, 2008, P. 173–179.
[2] Pat. 74608 Ukraine, MPK (2012) B 03 B 4/00. Sposib rizannia kharchovykh produktiv vysokoshvydkisnym hidroabrazyvnym strumenem, E. V. Ponomarenko, A. V. Pohrebniak, M. V. Naumchuk, 2012, № u201202141, Bull. No 21.
[3] Pogrebnyak, A.V. Research of the process of hydrocutting food products, A. V. Pogrebnyak, G. V. Deynichenko, Scientific journal NRU ITMO Series: Processes and equipment, 2016, No. 3(29), P. 48–62.
[4] Ivanyuta, Yu. F. Flow structure of polyethylene oxide solutions in the input zone of a short capillary, Yu. F. Ivanyuta, V. G. Pogrebnyak, N. V. Naumchuk, S. Ya. Frenkel, Inzh.-Fiz. Zh, 1985, Vol. 49, No. 4, P. 614–621.
[5] Pogrebnyak, V. G. Ecological technology of creating waterproof screens, V. G. Pogrebnyak, V. S. Voloshin, Donetsk : Knowledge, 2010, 482 p.
[6] BrestkinIu. V. Effekty DLP polimernykh rastvorov v prodolnykh hidrodinamicheskikh poliakh, Iu. V. Brestkin, S. A. Ahranova, N. E. Diakonova, V. H. Pohrebniak, Vysokomolekuliar. soedineniia. Ser. B, 1989, V. 31, No 11, P. 844–846.
[7] Brestkin, Yu. V. Dynamic coil–extended chain phase transition in the longitudinal field, Yu. V. Brestkin, Acta Polymerica, 1987, Vol. 38, No. 8, P. 470–477.
[8] Peterlin A. Hydrodinamics of macromolecules in a velocity field with longitudinal gradient, J. Polym. Sci. Pt. Polym. Letters, 1966, Vol. 4, No. 4, P. 287–291.
[9] Nicolis G. Self-ogganization in nonequilibrium systems, Nicolis, G., Prigogine, I, New York. London. Sydney. Toronto: AWileuy-Intersclence Publication JohnWiley&Sons, 1977, 491 p.
[10] De Gennes P. G. Coil-stretch thransition of dilute flexible polymers under ultrahigh velocity gradients, P. G. de Gennes, J. Chem. Phys, 1974, Vol. 60, No. 12, P. 5030–5042.
 
Rights © Національний університет "Львівська політехніка"
© Pogrebnyak A., Pogrebnyak V., 2017
 
Format 1-8
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Coverage Lviv
 
Publisher Lviv Politechnic Publishing House