Issue No 2, 2008 |
CALCULATION OF CONTACT INTERACTION BETWEEN COUNTABLE DOMAINS USING TIM-2D TECHNIQUE
A. A. Voropinov, L G. Novikov, S. S. Sokolov
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 5-20.
Calculation of contact interaction between countable domains using TIM-2D technique. The technique TIM-2D allows to calculate contact interaction between countable domains using the grid of arbitrary polygons with arbitrary number of connections in nodes. The nodes with arbitrary number of connections are allowed on the boundary. Described here are the following algorithms for boundary computation: rigid wall, free boundary, the boundary between countable domains with tangential discontinuity and the boundary between countable domains without tangential discontinuity. Also given here is the description of computational algorithms for triple points and boundary conditions change. The realized algorithms are verified using the series of test and method computations. It is shown that contact interaction computation does not impair the accuracy of solution and allows to keep Lagrangian boundary lines between the countable domains.
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| ON FLOW BEHAVIOUR FOR CERTAIN DIFFERENCE SCHEMES OF HEAT RADIATION TRANSPORT PROBLEMS IN A KINETIC APPROXIMATION V. V. Zav’yalov, A. A. Shestakov
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 21-30.
Described here is the numerical solution of integro-differential kinetic equation of photon transport using discrete ordinate method. The analysis of the results is carried out by the example of WDD and DDAD schemes in planar and spherically symmetric cases. The results of numerical calculations for test problems are given.
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| AN ALGORITHM FOR DEFINING THE SHORTEST DISTANCE BETWEEN TWO POINTS WITH ENVELOPING OF AN ELLIPSOID OF REVOLUTION D. Yu. D’yanov, K. V. Tsiberev
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 31-40.
This paper describes basic principles of solving the problem of defining the shortest distance between two points in space with enveloping of an ellipsoid of revolution. Some aspects of software implementation in the LEGAK-3D computational technique are given.
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| COMPUTATION TECHNIQUE FOR THE RADIATION FLUX INCIDENT ON THE SURFACE OF THE SPACESHIP S. V. Artamonov, V. A. Proshkin, A. E. Senilov, I. I. Shanin
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 41-59.
Described here is the technique which allows to calculate the radiation flux incident on the surface of the spaceship taking into account its relative motion, initial orientation and the given set of sources of external radiation flux (the Sun, the Earth, the Moon).
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| THE WAVE OF THERMONUCLEAR COMBUSTION IN THE TARGET OF RELATIVISTIC HEAVY-ION DRIVER A. G. Aksenov, M. M. Basko, Eo A. Zabrodina, D. G. Koshkarev, M. D. Churazov, B. Yu. Sharkov
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 60-59.
Described here is the system of design-theoretical estimations of the propagation of the thermonuclear combustion wave in deuterium target for the power relativistic heavy-ion driver. The new physico- mathematical model (MDMT-N) accounts for the primary effects connected with neutron processes in hybrid target. The possibility of the thermonuclear combustion wave in deuterium fuel of the cylindrical target at ρR ~ 3 g/cm2 is shown. Described here is the new control scheme for the ions of relativistic driver which allows the ignition of the priming DT pellet.
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| ACCESS DELIMITATION IN AUTOMATIC ACCOUNT AND TEST EQUIPMENT FOR NUCLEAR MATERIALS A. A. Anishchenko, K. V. Ivanov
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 66-70.
Described here are the problems connected with the problem of access delimitation in automatic account and test equipment for nuclear materials. The particular solution of this problem is given by the example of ACCORD-2005 system.
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| MONITORING PROGRAMM. THE TECHNIQUE OF VISUAL PROBLEM CALCULATION CONTROL AND MANAGEMENT IN REAL TIME USING THE REMOTE MULTIPROCESSORS M. A. Titov, A. B. Kiselev
VANT. Ser.: Mat. Mod. Fiz. Proc. 2008. No 2. P. 71-75.
Described here is the technique of visual control and management of the problem calculation using the software which implements the numerical techniques (Monitoring system). Monitoring system allows the PC user real-time interaction with the problem which is calculated using the remote multiprocessor.
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