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61.
Multiscale Lattice Boltzmann Schemes with Turbulence Modeling 总被引:1,自引:0,他引:1
Olga Filippova Sauro Succi Francesco Mazzocco Cinzio Arrighetti Gino Bella Dieter Hnel 《Journal of computational physics》2001,170(2):812
The viability of multiscale lattice Boltzmann schemes for the numerical simulation of turbulent flows is discussed and numerically demonstrated for turboaxial machine applications. The extension of boundary-fitting formulas based on wall functions is proposed, which enables the efficient computation of turbulent flows in complex curvilinear geometry using a simple Cartesian grid. Examples of two-dimensional turbulent flows in an axial compressor cascade are presented. 相似文献
62.
Nigmatullin RR Fishman AI Filippova EA Smith G 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2005,61(11-12):2691-2696
A new method, based on the presentation of initial data in the form of probability circles (PC), has been developed for constructing a calibration curve, which shows a monotonic dependence with respect to the given concentration. The centre of the reference probability circle is defined by its mean value and the radius of the circle is calculated as the value of the standard deviation of the sampling considered. The comparative probability circle is defined by the same corresponding parameters but rotated, relative to the initial reference circle, by an angle, which is related to the Pearson's correlation coefficient (PCC). The two parameters of the PCC and the statistical proximity factor (PCF), which defines the positions of the centres of the circles relative to each other, can be chosen as statistical parameters for the construction of the desired calibration curve. Experiments realized with the mixture of two liquids (chloroform serves as the basic matrix) and acetone (serves as an additive) confirm the efficiency of this new analytical method and demonstrate a possible increase sensitivity for the detection of lower concentration limit by approximately one order of magnitude. This new approach, which is free from model assumptions, and having very clear geometrical meaning, can be applied for different types of spectra and has many potential applications in the construction of calibration curves for different additives embedded within different matrices. 相似文献
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M. F. Shostakovskii S. P. Sushchinskaya V. B. Pukhnarevich A. I. Borisova A. Kh. Filippova V. G. Sakharovskii 《Russian Chemical Bulletin》1969,18(11):2443-2445
Conclusions The addition of trialkylsilanes to phenoxyacetylene in the presence of chlorplatinic acid proceeds stereospecifically at the triple bond, primarily according to the Farmer rule.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2599–2601, November, 1969. 相似文献
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