Methodology and Results of Catalycity and Plasma Erosion Tests on FEI Components

Experimental and Theoretical Simulation of Heterogeneous Catalysis in Aerothermochemistry (a Review)

“…The determination of these characteristics under the same conditions as those under which the catalytic properties of the coating are determined remains a pressing problem. One approach is based on making simultaneous measurements of the surface temperature using thermocouples and a thermal imaging system [35].…”

“…In the subsonic regime of dissociated air flow past models numerical solutions of the one-dimensional nonequilibrium boundary layer equations at the stagnation point have been used [18]. The two-dimensional Navier-Stokes equations for nonequilibrium five-component air were solved by the implicit finite-element method [49] in a nozzle and along a flat plate and a wavy surface [35,50]. In [21,37,51] the following three problems were successively solved: equilibrium plasma flow in a discharge plasmatron channel on the basis of the two-dimensional Navier-Stokes equations for swirled flow and a quasi-one-dimensional equation for the average complex amplitude of the electric field; axisymmetric subsonic equilibrium dissociated gas flow past a cylindrical model within the framework of the Navier-Stokes equations; and a one-dimensional nonequilibrium boundary layer of finite thickness at the model stagnation point.…”

“…For three different heat shield coatings [35,116] and quartz in dissociated carbon dioxide flows the effective recombination probabilities γ = γ O = γ CO have been obtained experimentally using an induction plasmatron [20,21,32]. In [117] the catalytic properties of SiO 2 with respect to O and CO recombination at low surface temperatures were determined by the diffusion method.…”

“…The numbers correspond to the experimental regimes [20] In [118,119] the mechanism of heterogeneous recombination of the products of carbon dioxide dissociation was considered in detail. Models of the catalytic properties of heat shield coatings [34,35,116] and quartz based on this approach were developed in [110][111][112][113][114][115].…”

Numerical and experimental study of catalytic activity of super high-temperature ceramics

“…Понимание роли неравновесных процессов, протекающих в потоке и на поверхности, и их корректное количественное описание также важны для интерпретации данных экспериментов, полученных в высокоэнтальпийных газодинамических установках, и переноса этих данных на условия входа в атмосферу [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”