Salinity and growth rate of ice formed by sea spray

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Abstract

A model of salt entrapment in ice grown by sea spray is developed. It is pointed out that during wet growth spray icing the ice/water interface always assumes a dendritic growth morphology, and that consequently liquid water is trapped in the spray ice matrix.
A result of the proposed theory is that the salinity of spray ice depends mainly on the accretion fraction. The ratio k of the salinity of accreted ice to the salinity of sea spray is , where k∗ is the interfacial distribution coefficient (ratio of the ice salinity to the salinity of water at the ice/water interface) and n is the accretion fraction (ratio of the accretion rate to the water impingement rate).
The mechanisms controlling K∗) are discussed, and it is concluded that a constant value of k∗ can be used, as a first approximation, in modelling salt entrapment in spray ice.
To calculate n, the proposed theory is incorporated into a cylinder icing model so that the accretion fraction and the salinities of ice and the liquid film on the icing surface are solved simultaneously by an interative procedure.
This makes it possible to calculate both the salinity and the growth rate of spray ice. At temperatures typical to marine icing the growth rate of saline water spray ice is lower than that of fresh water spray ice.
Original languageEnglish
Pages (from-to)163-171
JournalCold Regions Science and Technology
Volume14
Issue number2
DOIs
Publication statusPublished - 1987
MoE publication typeA1 Journal article-refereed

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spray
Ice
ice
salinity
accretion
Water
water
sea
Salts
salt
liquid
Saline water
Liquid films
matrix

Cite this

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title = "Salinity and growth rate of ice formed by sea spray",
abstract = "A model of salt entrapment in ice grown by sea spray is developed. It is pointed out that during wet growth spray icing the ice/water interface always assumes a dendritic growth morphology, and that consequently liquid water is trapped in the spray ice matrix. A result of the proposed theory is that the salinity of spray ice depends mainly on the accretion fraction. The ratio k of the salinity of accreted ice to the salinity of sea spray is , where k∗ is the interfacial distribution coefficient (ratio of the ice salinity to the salinity of water at the ice/water interface) and n is the accretion fraction (ratio of the accretion rate to the water impingement rate). The mechanisms controlling K∗) are discussed, and it is concluded that a constant value of k∗ can be used, as a first approximation, in modelling salt entrapment in spray ice. To calculate n, the proposed theory is incorporated into a cylinder icing model so that the accretion fraction and the salinities of ice and the liquid film on the icing surface are solved simultaneously by an interative procedure. This makes it possible to calculate both the salinity and the growth rate of spray ice. At temperatures typical to marine icing the growth rate of saline water spray ice is lower than that of fresh water spray ice.",
author = "Lasse Makkonen",
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language = "English",
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pages = "163--171",
journal = "Cold Regions Science and Technology",
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}

Salinity and growth rate of ice formed by sea spray. / Makkonen, Lasse.

In: Cold Regions Science and Technology, Vol. 14, No. 2, 1987, p. 163-171.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Salinity and growth rate of ice formed by sea spray

AU - Makkonen, Lasse

PY - 1987

Y1 - 1987

N2 - A model of salt entrapment in ice grown by sea spray is developed. It is pointed out that during wet growth spray icing the ice/water interface always assumes a dendritic growth morphology, and that consequently liquid water is trapped in the spray ice matrix. A result of the proposed theory is that the salinity of spray ice depends mainly on the accretion fraction. The ratio k of the salinity of accreted ice to the salinity of sea spray is , where k∗ is the interfacial distribution coefficient (ratio of the ice salinity to the salinity of water at the ice/water interface) and n is the accretion fraction (ratio of the accretion rate to the water impingement rate). The mechanisms controlling K∗) are discussed, and it is concluded that a constant value of k∗ can be used, as a first approximation, in modelling salt entrapment in spray ice. To calculate n, the proposed theory is incorporated into a cylinder icing model so that the accretion fraction and the salinities of ice and the liquid film on the icing surface are solved simultaneously by an interative procedure. This makes it possible to calculate both the salinity and the growth rate of spray ice. At temperatures typical to marine icing the growth rate of saline water spray ice is lower than that of fresh water spray ice.

AB - A model of salt entrapment in ice grown by sea spray is developed. It is pointed out that during wet growth spray icing the ice/water interface always assumes a dendritic growth morphology, and that consequently liquid water is trapped in the spray ice matrix. A result of the proposed theory is that the salinity of spray ice depends mainly on the accretion fraction. The ratio k of the salinity of accreted ice to the salinity of sea spray is , where k∗ is the interfacial distribution coefficient (ratio of the ice salinity to the salinity of water at the ice/water interface) and n is the accretion fraction (ratio of the accretion rate to the water impingement rate). The mechanisms controlling K∗) are discussed, and it is concluded that a constant value of k∗ can be used, as a first approximation, in modelling salt entrapment in spray ice. To calculate n, the proposed theory is incorporated into a cylinder icing model so that the accretion fraction and the salinities of ice and the liquid film on the icing surface are solved simultaneously by an interative procedure. This makes it possible to calculate both the salinity and the growth rate of spray ice. At temperatures typical to marine icing the growth rate of saline water spray ice is lower than that of fresh water spray ice.

U2 - 10.1016/0165-232X(87)90032-2

DO - 10.1016/0165-232X(87)90032-2

M3 - Article

VL - 14

SP - 163

EP - 171

JO - Cold Regions Science and Technology

JF - Cold Regions Science and Technology

SN - 0165-232X

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ER -