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Numerical simulation of the hydrodynamics and mass transfer in 3D spiral motion system for KDP crystal growth.

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Title: Numerical simulation of the hydrodynamics and mass transfer in 3D spiral motion system for KDP crystal growth.
Authors: Hu, Zhitao1, Li, Mingwei1 aoweixia@126.com, Yin, Huawei1, Zhou, Chuan1,2
Source: International Journal of Heat & Mass Transfer. Feb2018, Vol. 117, p607-616. 10p.
Subjects: Computational hydrodynamics software, Mass transfer, Crystal growth, Potassium dihydrogen phosphate, Computer simulation, Mathematical models
Abstract: A numerical study of the unsteady turbulent flow and mass transfer involved in the potassium dihydrogen phosphate crystal growth from an aqueous solution with a three-dimensional spiral motion configuration was performed using the standard k – ε model with an enhanced wall treatment. The three-dimensional spiral motion is composed of a uniform circular motion on the horizontal plane and a reciprocating motion in the vertical direction. The simulation indicates that the crystal spiral motion will drive the mainstream solution rotating around the axis of the growth vessel and form an oscillatory flow near the crystal, which results in a periodical reversal of the supersaturation distribution on the crystal faces and effectively suppresses the morphological instability of the crystal surfaces. With the increase of the orbital radius R or the characteristic rotation rate ω , the line speed V 0 of crystal in the horizontal plane will increase, leading to a decline of the thickness of the diffusional boundary layer and an increase of the time-averaged supersaturation on the crystal faces. At the same time, the homogeneity of the surface supersaturation will be improved too, which would benefit the morphological stability of the crystal surfaces. However, when the crystal size increases, the time-averaged supersaturation on the crystal faces will decrease and its homogeneity will deteriorate. Therefore, with crystal growth, increasing the orbital radius, R , and reducing the period, T 1 , of the crystal circular motion are necessary. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 126186116
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Numerical simulation of the hydrodynamics and mass transfer in 3D spiral motion system for KDP crystal growth.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Zhitao%22">Hu, Zhitao</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Mingwei%22">Li, Mingwei</searchLink><relatesTo>1</relatesTo><i> aoweixia@126.com</i><br /><searchLink fieldCode="AR" term="%22Yin%2C+Huawei%22">Yin, Huawei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Chuan%22">Zhou, Chuan</searchLink><relatesTo>1,2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Heat+%26+Mass+Transfer%22">International Journal of Heat & Mass Transfer</searchLink>. Feb2018, Vol. 117, p607-616. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Computational+hydrodynamics+software%22">Computational hydrodynamics software</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+growth%22">Crystal growth</searchLink><br /><searchLink fieldCode="DE" term="%22Potassium+dihydrogen+phosphate%22">Potassium dihydrogen phosphate</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A numerical study of the unsteady turbulent flow and mass transfer involved in the potassium dihydrogen phosphate crystal growth from an aqueous solution with a three-dimensional spiral motion configuration was performed using the standard k – ε model with an enhanced wall treatment. The three-dimensional spiral motion is composed of a uniform circular motion on the horizontal plane and a reciprocating motion in the vertical direction. The simulation indicates that the crystal spiral motion will drive the mainstream solution rotating around the axis of the growth vessel and form an oscillatory flow near the crystal, which results in a periodical reversal of the supersaturation distribution on the crystal faces and effectively suppresses the morphological instability of the crystal surfaces. With the increase of the orbital radius R or the characteristic rotation rate ω , the line speed V 0 of crystal in the horizontal plane will increase, leading to a decline of the thickness of the diffusional boundary layer and an increase of the time-averaged supersaturation on the crystal faces. At the same time, the homogeneity of the surface supersaturation will be improved too, which would benefit the morphological stability of the crystal surfaces. However, when the crystal size increases, the time-averaged supersaturation on the crystal faces will decrease and its homogeneity will deteriorate. Therefore, with crystal growth, increasing the orbital radius, R , and reducing the period, T 1 , of the crystal circular motion are necessary. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Heat & Mass Transfer is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ijheatmasstransfer.2017.10.002
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 607
    Subjects:
      – SubjectFull: Computational hydrodynamics software
        Type: general
      – SubjectFull: Mass transfer
        Type: general
      – SubjectFull: Crystal growth
        Type: general
      – SubjectFull: Potassium dihydrogen phosphate
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Mathematical models
        Type: general
    Titles:
      – TitleFull: Numerical simulation of the hydrodynamics and mass transfer in 3D spiral motion system for KDP crystal growth.
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          Name:
            NameFull: Hu, Zhitao
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            NameFull: Li, Mingwei
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            NameFull: Yin, Huawei
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            NameFull: Zhou, Chuan
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            – D: 01
              M: 02
              Text: Feb2018
              Type: published
              Y: 2018
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              Value: 117
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            – TitleFull: International Journal of Heat & Mass Transfer
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