Heat transfer in envelopes made of porous network materials

The thermal state and the heat transfer in a porous metal shell upon penetration cooling

“…In publications on the numerical and experimental study of heat transfer in porous shells [3][4][5][6][7], the source of heat is given in the form of the internal heat generation, viz., the constancy of the skeleton's tem perature T s = const or the constancy of the heat emis sion into the skeleton's volume = const. However, this also refers to all previous works [8].…”

“…The experimental data on the heat transfer from the shells manufactured of a PMSM [5,6] (see the following section) were obtained within the ranges of the perme ability index K = (0.3-1.3) × 10 -10 m 2 , 10 -3 ≤ Pe ≤ 20, 0.35 < Π < 0.6. To explain the specific features of the temperature distribution under the TSPS conditions, Fig.…”

“…Laboratory experiments [5,6] are dedicated pre dominantly to study of the heat transfer at low Peclet numbers in porous samples made of a PMSM the characteristics of which are reported in preprint [14]. The experimental data on the complete heat transfer Nu VC = obtained by experimental study of cylindrical and flat samples made of a PMSM [5,6] are plotted in Fig.…”

“…The experimental data on the complete heat transfer Nu VC = obtained by experimental study of cylindrical and flat samples made of a PMSM [5,6] are plotted in Fig. 4.…”

“…Generalization of data on the hydraulic resistance of porous meshed shell materials (PMSMs) [1], anal ysis of published information on the heat transfer in porous layers [2], and presentation and generalization of the obtained data on thermal characteristics of porous shells in [3][4][5][6][7] show that use of the permeabil ity index K to power 0.5 as a characteristic linear scale is successful. Thus, in the analysis and the generaliza tions cited in this paper, this linear scale will be also applied.…”