Nuclear Flow in Consistent Boltzmann Algorithm Models

We investigate the stochastic Direct Simulation Monte Carlo method (DSMC) for numerically solving the collision-term in heavy-ion transport theories of the Boltzmann-Uehling-Uhlenbeck (BUU) type. The first major modification we consider is changes in the collision rates due to excluded volume and shadowing/screening effects (Enskog theory). The second effect studied by us is the inclusion of an additional advection term. These modifications ensure a non-vanishing second virial and change the equation of state for the scattering process from that of an ideal gas to that of a hard-sphere gas. We analyse the effect of these modifications on the calculated value of directed nuclear collective flow in heavy ion collisions, and find that the flow slightly increases.Comment: 12 pages, REVTeX, figures available in PostScript from the authors upon reques

The principles of the full-factor numeral-field analysis of the turbogenerator’s loading mode

Изложен принцип анализа режима нагрузки турбогенератора посредством численного расчета магнитного поля. Одним из результатов этого является ток возбуждения при заданных параметрах на выходе обмотки статора. Магнитное поле в режиме нагрузки рассчитывается в поперечном сечении турбогенератора, но при этом учитываются активное сопротивление обмотки статора и индуктивное сопротивление ее лобового рассеяния.The principle of analysis of the turbogenerator’s loading mode by means of the numeral magnetic field’s calculation, is presented. The one of its results is the current of excitation in case of set parameters on the output of stator’s windings. The magnetic field in the loading mode is calculated in the turbogenerator’s cross-section, but the active resistance of stator’s windings and the inductive resistance of its frontal parts is taken into accoun