排序方式: 共有33条查询结果,搜索用时 15 毫秒
1.
D.L. Skuratov Yu.L. Ratis I.A. Selezneva J. Pérez P. Fernández de Córdoba J.F. Urchueguía 《Applied Mathematical Modelling》2007
This paper deals with modelling the workpiece temperature field produced during the grinding process. The proposed model is given in terms of a two-dimensional boundary-value problem where the interdependence among the grinding wheel, the workpiece and the coolant is described by two variable functions in the boundary condition. An explicit integral form solution is constructed using the Laplace and Fourier transforms and the Green’s function method. 相似文献
2.
The features of the flowfield and heat transfer on the surface of an axisymmetric body with a narrow groove in its nose immersed
in a hypersonic perfect-gas stream (M∞=6.1) are studied on the basis of a numerical analysis of the two-dimensional Navier-Stokes equations. The calculations are
performed for both thermally insulated and isothermal surfaces having grooves of different width. The calculated results are
compared with experimental data.
Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 1, pp. 117–124, January–February,
2000.
The study was carried out with the support of the International Scientific and Technical Center (project No. 036). 相似文献
3.
4.
The stretching of a liquid sample, squeezed out in the vertical direction from an aperture of an arbitrary form, is investigated. The problem of controlling the dimensions of the aperture or the rate of squeezing for obtaining samples of a given configuration is discussed.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 5, pp. 10–14, September–October, 1975. 相似文献
5.
L. A. Vlasukova F. F. Komarov V. N. Yuvchenko V. A. Skuratov A. Yu. Didyk D. V. Plyakin 《Bulletin of the Russian Academy of Sciences: Physics》2010,74(2):206-208
The morphology of the tracks of swift ions revealed in amorphous silicon nitride after treatment in an HF solution is studied.
The Si3N4/Si structures were irradiated with Fe, Kr, and W ions in the electron energy loss regime. Discontinuous tracks were recorded
upon exposure to W only, with an electron energy loss of 20.4 keV nm−1 being maximal for the conditions of our experiment. The results from calculations of the track formation in Si3N4 based on the thermal spike model are presented. 相似文献
6.
B. Gikal S. Dmitriev G. Gulbekian P. Apel’ V. Bashevoi S. Bogomolov O. Borisov V. Buzmakov A. Cherevatenko A. Efremov I. Ivanenko O. Ivanov N. Kazarinov M. Khabarov I. Kolesov V. Mironov A. Papash S. Patschenko V. Skuratov A. Tikhomirov N. Jazvitsky 《Physics of Particles and Nuclei Letters》2008,5(7):629-633
The cyclotron IC-100 station, based on the Laboratory of Nuclear Reactions (JINR, Dubna, Russia), provides the industrial
construction of nuclear filters. During modernization, the cyclotron was equipped with a superconducting ECR-ion source and
an axial injection system. The specialized beam channel with a two coordinate scanning system and equipment for irradiating
polymer films was installed in the implantation part of the station. High intensity heavy ion beams of Ne, Ar, Fe, Kr, Xe,
I, and W have been accelerated to 1 MeV/nucleon energy. The investigation into irradiated crystals features and irradiation
of different polymer films is provided. Also, a few thousands square meters of track films with holes in the wide range of
densities were produced. The cyclotron-based station is capable of solving different kinds of scientific and applied problems
as well.
The text was submitted by the authors in English. 相似文献
7.
F. F. Komarov O. V. Milchanin V. A. Skuratov M. A. Makhavikou A. Janse van Vuuren J. N. Neethling E. Wendler L. A. Vlasukova I. N. Parkhomenko V. N. Yuvchenko 《Bulletin of the Russian Academy of Sciences: Physics》2016,80(2):141-145
The implantation formation of InAs nanoclusters in silicon and silica and their modification via irradiation with Xe ions with an energy of 167 MeV and a fluence of 3 × 1014 cm–2 are studied. It is found that post-implantation annealing and irradiation with high-energy ions alter the size and shape of nanoclusters and cause structural transformations within them. The ordering of nanoclusters and their elongation along the trajectory of Xe ions in a SiO2 matrix is observed. 相似文献
8.
V. I. Balykin P. A. Borisov V. S. Letokhov P. N. Melentiev S. N. Rudnev A. P. Cherkun A. P. Akimenko P. Yu. Apel V. A. Skuratov 《JETP Letters》2006,84(8):466-469
An atom “pinhole camera” with nanometer resolution has been experimentally implemented for the first time. Owing to the use of this camera, an array of ~106 identical nanostructures of Cr atoms with a characteristic size of the nanostructure of less than 50 nm has been created on a glass surface. Nanostructures of arbitrary shapes have been created. 相似文献
9.
B. N. Gikal S. N. Dmitriev G. G. Gul’bekyan P. Yu. Apel’ V. V. Bashevoi S. L. Bogomolov O. N. Borisov V. A. Buzmakov I. A. Ivanenko O. M. Ivanov N. Yu. Kazarinov I. V. Kolesov V. I. Mironov A. I. Papash S. V. Pashchenko V. A. Skuratov A. V. Tikhomirov M. V. Khabarov A. P. Cherevatenko N. Yu. Yazvitskii 《Physics of Particles and Nuclei Letters》2008,5(1):33-48
Industrial production of nuclear filters has been implemented at the IC-100 cyclotron complex of the Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research. After the complete upgrade, the cyclotron was equipped with the superconducting ECR ion source and the system of external axial beam injection. The implantation complex was equipped with the special transportation channel with the beam scanning system and the setup for irradiation of polymer films. Intense beams of heavy ions Ne, Ar, Fe, Kr, Xe, I, and W with an energy of ~1 MeV/nucleon were obtained. the properties of irradiated crystals were studied, different polymer films were irradiated, and several thousands of square meters of track membranes with pore densities varying in a wide range were produced. Other scientific and applied problems can be solved at the cyclotron complex. 相似文献
10.
Supersonic boundary layer transition induced by roughness on the attachment line of a yawed cylinder
The effect of a single two-dimensional irregularity and sandy roughness on boundary layer transition in supersonic flow over a yawed cylinder (M = 6)-has been experimentally investigated. The characteristic flow regimes beyond the roughness are identified, and their limits are determined as a function of the Reynolds number and the ratio of the height of the roughness to the characteristic thickness of the boundary layer. A qualitative comparison is made with the flow regimes induced by roughness on the attachment line in incompressible flow over a cylinder [1–3]. The thermal indicator coating method is used to measure the heat fluxes along the attachment line and a comparison is made with calculations carried out in accordance with the methods of other authors.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 6, pp. 28–35, November–December, 1991.The authors are grateful to A. F. Kiselev for helping to calculate the heat flux in the turbulent boundary layer. 相似文献