On the Problem of Creating a Physically Consistent Model of a Liquid Pool Boiling Crisis (Comment on the Article of E.D.
- PDF / 159,845 Bytes
- 3 Pages / 612 x 792 pts (letter) Page_size
- 73 Downloads / 156 Views
SCUSSION
On the Problem of Creating a Physically Consistent Model of a Liquid Pool Boiling Crisis (Comment on the Article of E.D. Fedorovich “On the Expediency of Developing a Two-Stage Model of Boiling Crisis of a Liquid Wetting a Heating Surface”) M. A. Gotovskii* Polzunov Scientific and Development Association for Research and Design of Power Equipment, St. Petersburg, 191167 Russia *e-mail: [email protected] Received January 15, 2020; revised January 15, 2020; accepted February 19, 2020
Abstract—This article lays out the author’s views on the evolution of approaches to describing the heat transfer crisis during boiling in a large volume. The preparation of this commentary is related to the publication of E.D. Fedorovich’s brief report “On the Feasibility of Developing a Two-Stage Model of the Boiling Crisis of a Liquid Wetting the Heating Surface,” which outlines the idea of developing a two-stage model of the emergence and development of a heat transfer crisis during boiling, in which one of the stages is the violation of the stability of the two-phase wall layer and the other is the appearance of and fusion of dry spots on the heating surface. Keywords: boiling crisis, Kutateladze and Zuber, dry spot fusion model DOI: 10.1134/S0040601520110063
In the initial period of his work at the CCTI immediately after graduating from the Leningrad Polytechnic Institute (1963), the author of this communication was faced with the problem of the heat transfer crisis during bubble boiling in large volumes. Shortly before that, he defended his doctoral dissertation by Veniamin Mironovich Borishansky (the scientific adviser of the author), who had long-standing close relations (both scientific and friendly) with Samson Semenovich Kutateladze, who published his model of a fluid boiling crisis in large volume in 1950 [1]. Somewhat later, the work of Zuber [2] appeared in which a similar model was considered, containing a theoretical description of such a crisis scheme, and a calculation formula was obtained that was similar in appearance to Kutateladze’s. Borishansky suggested that the author of this communication consider the model of Zuber and try to take into account the effect of fluid viscosity. This was done because some experimental data appeared in which this effect was taken into account. As a result, an article was published in 1965 that described the results of a computational study [3]. The reviewer for this article was Kutateladze. The cardinal issues related to heat transfer processes were not considered in this work, and the influence of fluid viscosity was taken into account in the form of a dimensionless complex. Subsequently, the author of this communication switched to the study of liquid metals and returned to
two-phase flows only after defending a candidate dissertation in the 1970s. A set of studies was then carried out to develop the thermophysical regime of nuclear power plants with RBMK reactors. By this time, the question had already been raised about the validity of using the models of heat transfer c
Data Loading...
