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791.
Nynke A. M. Verhaegh Jeroen S. van Duijneveldt Jan K. G. Dhont Henk N. W. Lekkerkerker 《Physica A》1996,230(3-4):409-436
Mixtures of colloidal silica spheres and polydimethylsiloxane in cyclohexane with a colloid-polymer size ratio of about one were found to phase separate into two fluid phases, one which is colloid-rich and one which is colloid-poor. In this work the phase separation kinetics of this fluid-fluid phase separation is studied for different compositions of the colloid-polymer mixtures, and at several degrees of supersaturation, with small angle light scattering and with light microscopy. The small angle light scattering curve exhibits a peak that grows in intensity and that shifts to smaller wave vector with time. The characteristic length scale that is obtained from the scattering peak is of the order of a few μm, in agreement with observations by light microscopy. The domain size increases with time as
, which might be an indication of coarsening by diffusion and coalescence, like in the case of binary liquid mixtures and polymer blends. For sufficiently low degrees of supersaturation the angular scattering intensity curves satisfy dynamical scaling behavior. 相似文献
792.
793.
A multigrid acceleration technique developed for solving the three-dimensional Navier–Stokes equations for subsonic/transonic flows has been extended to supersonic/hypersonic flows. An explicit multistage Runge–Kutta type of time-stepping scheme is used as the basic algorithm in conjunction with the multigrid scheme. Solutions have been obtained for a blunt conical frustum at Mach 6 to demonstrate the applicability of the multigrid scheme to high-speed flows. Computations have also been performed for a generic High-Speed Civil Transport configuration designed to cruise at Mach 3. These solutions demonstrate both the efficiency and accuracy of the present scheme for computing high-speed viscous flows over configurations of practical interest. 相似文献
794.
S. É. Lapin 《Mathematical Notes》1993,54(1):701-704
Translated from Matematicheskie Zametki, Vol. 54, No. 1, pp. 52–56, July, 1993. 相似文献
795.
A deflecting system formed by two parallel-plate capacitors on opposite sides of an optoelectronic element that alters the
energy of a beam of charged particles, is calculated numerically. The conditions for correcting the chromatic beam spreading
in the plane of the target are found. Good agreement with the results of an approximate analytical calculation is demonstrated.
Zh. Tekh. Fiz. 67, 86–88 (December 1997) 相似文献
796.
V. G. Zhuravlev 《Journal of Mathematical Sciences》1997,83(6):750-761
For a generating Dirichlet vector series with coefficients equal to the number of representations of a quadratic form by another
one we abtain a decomposition into the product of a finite number of Dirichlet L-functions and an infinite number of matrix
polynomials. The coefficients of the polynomials are the Eichler-Brandt matrices of the basis double cosets of the local orthogonal
Hecke rings.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 212, 1994, pp. 97–113.
Translated by N. Yu. Netsvetaev. 相似文献
797.
S. Ya. Khavinson 《Journal of Mathematical Sciences》1993,63(2):275-290
The paper is devoted to the theory of factorization of univalent analytic functions on a compact Riemann surface with boundary. The main component of the theory is a new method for the removal of the periods of certain functions (the natural analogues of the Schwarz integral and Blaschke products) along the boundary curves and bundle sections.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova Akademii Nauk SSSR, Vol. 170, pp. 285–313, 1989. 相似文献
798.
E. V. Il'ina 《Computational Mathematics and Modeling》1993,4(1):90-94
Translated from Pryamye i Obratnye Zadachi Matematicheskoi Fiziki, pp. 198–203, 1991. 相似文献
799.
An analogue of the differential calculus associated with a unitary solution of the quantum Young-Baxter equation is constructed.
An example of a ring sheaf is considered in which local solutions of the Young-Baxter quantum equation are defined but there
is no global section. Bibliography: 13 titles.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 199, 1992, pp. 51–70.
Translated by I. A. Izergina. 相似文献
800.
A. V. Shapovalov I. V. Shirokov Ya. V. Lisitsyn V. I. Firstov 《Russian Physics Journal》1995,38(2):209-212
D'alambert's equation is used as an example to study the possibilities of a new method of exactly integrating systems of linear differential equations — the method of noncommutative integration (NI). The results confirm that use of the NI is equivalent to complete separation of the variables in the case of four-dimensional subalgebras of conformal algebra. However, the method does simplify determination of the exact solution in this instance.Tomsk University. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 120–124, February, 1995. 相似文献