Microwave Heating of a Liquid Stably Flowing in a Circular Channel Under the Conditions of Nonstationary Radiative-Convective Heat Transfer

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Microwave Heating of a Liquid Stably Flowing in a Circular Channel Under the Conditions of Nonstationary Radiative-Convective Heat Transfer. / Salomatov, V. V.; Puzyrev, E. M.; Salomatov, A. V.

In: Journal of Engineering Physics and Thermophysics, Vol. 91, No. 2, 01.03.2018, p. 388-404.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{75479d2549964324a88e8f47ed83ffe8,

title = "Microwave Heating of a Liquid Stably Flowing in a Circular Channel Under the Conditions of Nonstationary Radiative-Convective Heat Transfer",

abstract = "A class of nonlinear problems of nonstationary radiative-convective heat transfer under the microwave action with a small penetration depth is considered in a stabilized coolant flow in a circular channel. The solutions to these problems are obtained, using asymptotic procedures at the stages of nonstationary and stationary convective heat transfer on the heat-radiating channel surface. The nonstationary and stationary stages of the solution are matched, using the {"}longitudinal coordinate–time{"} characteristic. The approximate solutions constructed on such principles correlate reliably with the exact ones at the limiting values of the operation parameters, as well as with numerical and experimental data of other researchers. An important advantage of these solutions is that they allow the determination of the main regularities of the microwave and thermal radiation influence on convective heat transfer in a channel even before performing cumbersome calculations. It is shown that, irrespective of the heat exchange regime (nonstationary or stationary), the Nusselt number decreases and the rate of the surface temperature change increases with increase in the intensity of thermal action.",

keywords = "heat radiation, microwave radiation, nonstationary heat transfer, Nusselt number, radiative-convective heat transfer, round channel, stabilized flow, Stark number, stationary heat transfer",

author = "Salomatov, {V. V.} and Puzyrev, {E. M.} and Salomatov, {A. V.}",

note = "Publisher Copyright: {\textcopyright} 2018, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2018",

month = mar,

day = "1",

doi = "10.1007/s10891-018-1760-9",

language = "English",

volume = "91",

pages = "388--404",

journal = "Journal of Engineering Physics and Thermophysics",

issn = "1062-0125",

publisher = "Springer GmbH & Co, Auslieferungs-Gesellschaf",

number = "2",

}

RIS

TY - JOUR

T1 - Microwave Heating of a Liquid Stably Flowing in a Circular Channel Under the Conditions of Nonstationary Radiative-Convective Heat Transfer

AU - Salomatov, V. V.

AU - Puzyrev, E. M.

AU - Salomatov, A. V.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - A class of nonlinear problems of nonstationary radiative-convective heat transfer under the microwave action with a small penetration depth is considered in a stabilized coolant flow in a circular channel. The solutions to these problems are obtained, using asymptotic procedures at the stages of nonstationary and stationary convective heat transfer on the heat-radiating channel surface. The nonstationary and stationary stages of the solution are matched, using the "longitudinal coordinate–time" characteristic. The approximate solutions constructed on such principles correlate reliably with the exact ones at the limiting values of the operation parameters, as well as with numerical and experimental data of other researchers. An important advantage of these solutions is that they allow the determination of the main regularities of the microwave and thermal radiation influence on convective heat transfer in a channel even before performing cumbersome calculations. It is shown that, irrespective of the heat exchange regime (nonstationary or stationary), the Nusselt number decreases and the rate of the surface temperature change increases with increase in the intensity of thermal action.

AB - A class of nonlinear problems of nonstationary radiative-convective heat transfer under the microwave action with a small penetration depth is considered in a stabilized coolant flow in a circular channel. The solutions to these problems are obtained, using asymptotic procedures at the stages of nonstationary and stationary convective heat transfer on the heat-radiating channel surface. The nonstationary and stationary stages of the solution are matched, using the "longitudinal coordinate–time" characteristic. The approximate solutions constructed on such principles correlate reliably with the exact ones at the limiting values of the operation parameters, as well as with numerical and experimental data of other researchers. An important advantage of these solutions is that they allow the determination of the main regularities of the microwave and thermal radiation influence on convective heat transfer in a channel even before performing cumbersome calculations. It is shown that, irrespective of the heat exchange regime (nonstationary or stationary), the Nusselt number decreases and the rate of the surface temperature change increases with increase in the intensity of thermal action.

KW - heat radiation

KW - microwave radiation

KW - nonstationary heat transfer

KW - Nusselt number

KW - radiative-convective heat transfer

KW - round channel

KW - stabilized flow

KW - Stark number

KW - stationary heat transfer

UR - http://www.scopus.com/inward/record.url?scp=85046421952&partnerID=8YFLogxK

U2 - 10.1007/s10891-018-1760-9

DO - 10.1007/s10891-018-1760-9

M3 - Article

AN - SCOPUS:85046421952

VL - 91

SP - 388

EP - 404

JO - Journal of Engineering Physics and Thermophysics

JF - Journal of Engineering Physics and Thermophysics

SN - 1062-0125

IS - 2

ER -

ID: 13072467