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Popov I.A.,polev Kazan National Research Technical University Kai | Shchelchkov A.V.,polev Kazan National Research Technical University Kai
Journal of Engineering Physics and Thermophysics | Year: 2014

This paper presents the results of experimental studies of the heat transfer of microstructurized surfaces of various configurations and sizes obtained by the method of deforming cutting. It has been shown that the intensity of heat transfer on such surfaces with three-dimensional columnar and channel structures increases by 20 times, and on microfinned surfaces by 2.5 times, compared to the smooth boiling surface. The critical heat flow density increases 4.1–6 times thereby. The obtained results on the heat transfer on the above surfaces and the critical flow densities on them can be used for calculating the heat transfer coefficients and the heat loads in boiling of various saturated liquids on such surfaces with sizes of fin elements from 50 to 420 μm at a pressure of 0.1 MPa under free convection conditions. © 2014, Springer Science+Business Media New York. Source


Popov I.A.,polev Kazan National Research Technical University Kai | Shchelchkov A.V.,polev Kazan National Research Technical University Kai | Yarkaev M.Z.,polev Kazan National Research Technical University Kai
Journal of Engineering Physics and Thermophysics | Year: 2015

Experimental investigations of hydraulic resistance and heat transfer in channels with intensifiers in the form of systems of spherical protrusions have been generalized in a wide range of working and design parameters. A unified approach to the correlation of experimental data of various investigators with account for the differences in the geometry of heat transfer surfaces has been worked out. Unified universal dependences for the coefficients of hydraulic resistance and heat transfer in channels with spherical protrusions are obtained. © 2015, Springer Science+Business Media New York. Source


Altunin V.A.,polev Kazan National Research Technical University Kai | Altunin K.V.,polev Kazan National Research Technical University Kai | Aliev I.N.,Moscow State Technical University | Gortyshov Yu.F.,polev Kazan National Research Technical University Kai | And 4 more authors.
Journal of Engineering Physics and Thermophysics | Year: 2012

Based on the analysis of scientific-technical literature, the development of investigations and application of electric (electrostatic) fields in liquid and gaseous media in earth and space conditions is shown. A course of further investigations of electric wind in liquid and gaseous hydrocarbon fuels and coolants under the conditions of their natural and forced convection in wide ranges of pressure and temperature parameters with visualization of the characteristic features of thermal processes with the aid of Toepler's optical device is traced. © 2012 Springer Science+Business Media, Inc. Source

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