Documenting the business processes of research centers

The article is devoted to the regulation of business processes on the example of a research center. The goals and objectives of process regulation are presented. The article describes what the regulation is and what it provides for the company

The modified numerical scheme for 2d flow-structure interaction simulation using meshless vortex element method

The modification of the meshless Vortex Element Method based on the Viscous Vortex Domain Method and non-classical approach to boundary conditions satisfaction is developed for numerical simulation in 2D FSI-problems for incompressible flows. The developed approach preserves all advantages of meshless lagrangian vortex methods, however the accuracy of vortex layer computation is much higher than in ‘classical’ re- alizations of vortex methods. No-slip boundary condition is satisfied through limit value of tangential velocity vanishing on the airfoil surface while in ‘classical’ approach nor- mal components of velocity are used. These approaches lead to Fredholm-type integral equation of the second kind and Hilbert-type singular integral equation of the first kind correspondingly. The developed method allows to simulate flow around fixed, movable and deformable airfoils while the computational cost of the algorithm remains nearly the same. The discretization scheme is constructed in such a way that it provides exactly the same results in direct and inversed motion of the airfoil (i. e. when the rigid airfoil moves translationally in still media and when the airfoil is fixed in the unbounded incident flow). In addition to number of model problems which shows advantages of the developed ap- proach and its accuracy order, the well-known two-way coupled problem of vortex induced vibrations and wind resonance phenomenon simulation is considered. The obtained depen- dency of the oscillations amplitude on the eigenfrequency of linear visco-elastic mechanical system (including hysteresis phenomenon) is in good agreement with experimental data and other known numerical simulations. It is shown that meshless vortex method allows to provide numerical simulation in such problems with sufficiently small requirements to memory and computational time and small numerical viscosity

High-order numerical scheme for vortex sheet approximation in vortex methods for 2D flow simulation

The problem of high-order numerical schemes developing is considered for solving of boundary integral equation for vortex sheet intensity, which arises in 2D mesh-less vortex particle methods. Curvilinearity of the airfoil surface line is taken into account: its shape is approximated by Hermite cubic spline interpolation instead of rectilinear pan- els which are usually used in vortex methods. Coefficients of system of linear algebraic equations are represented by define integrals of known functions. For some coefficients (which can not be calculated numerically) approximate analytic formulae are obtained, the other coefficients can be computed using 4 point Gaussian integration. The devel- oped numerical scheme provides 4-th order of accuracy for average values of vortex sheet intensities over the panels

Comparison of the finite volume method with lagrangian vortex method for 2d flow simulation around airfoils at intermediate reynolds number

The paper is dedicated to the numerical simulation of two-dimensional viscous incompressible flow. The Viscous Vortex Domains method is considered, which is one of the modifications of Lagrangian vortex methods. This method is implemented in the open-source VM2D code, which developes by the authors. Model problems of exter- nal and internal flow simulation are considered for VM2D testing. For the problem of the flow simulation around two closely spaced circular cylinders, VM2D is compared to OpenFOAM in terms of computational efficiency. As the internal flow problem the flow in a channel with a backward-facing step is considered. For both problems, the results obtained in VM2D are in good agreement with the results of other researchers

Accurate solution of the boundary integral equation in 2d lagrangian vortex method for flow simulation around curvilinear airfoils

The problem of numerical solution of the boundary integral equation is considered for 2D case. Viscous vortex domains (VVD) method is used for flow simulation, so vorticity is generated on the whole surface line of the airfoil, and there are a lot of vortex elements close to the airfoil. The aim of the research is to provide high accuracy of numer- ical solution of the integral equation; at the same time the computational complexity of the numerical algorithm should be at rather low level. The third-order accuracy numerical scheme, based on piecewise-quadratic solution representation on the curvilinear panels is presented, approximate analytic expressions are obtained for the matrix coefficients. These schemes work perfect in the case of potential flow simulation, when vorticity is absent and also when vortex elements are placed rather far from the airfoil surface line. A trivial way to the accuracy improvement for the closely located vortices, which consists in extremely fine surface line discretization, leads to unacceptably high numerical complexity of the algorithm. This problem is solved by developing semi-analytical correcti- on procedure which makes it possible to achieve high accuracy at extremely coarse surface line discretization. For example, in the model problem of flow simulation around elliptical airfoil with 2:1 semiaxes ratio only 20 panels are required to achieve the error level less than 1 % for arbitrary position of the vortex element in the flow

Clinical predictors of calcification of xenoaortic biological prosthesis of valves

A retrospective analysis of clinical status of the recipients of biological prosthesis in mitral position was conducted: group 1 included patients with histologically confirmed calcification, group 11 included patients with normal morphology andfunctioning ofprosthesis. Follow-up depth was 94,5 %, average terms are 8,0 ± 4,4 years, follow-up scope is2792 patient-years. More severe clinical condition and prolonged cardiopulmonary bypass time while conducting primary surgical interventions are specific for the patients of the 1 group. The risk factors of prosthesis calcification are degree of cardiac failure decompensation, duration and traumatizing effect of surgical intervention

Accuracy comparison of different approaches for vortex sheet discretization on the airfoil in vortex particles method

The hierarchy of numerical schemes is developed for the solution of the boundary integral equation which arises in the vortex particles method. Two different approaches are considered and numerical schemes are presented, which provide 1-st and 2-nd order of accuracy with respect to two different norms. The developed finite element-type schemes have nearly the same computational cost as the simplest scheme with piecewise-constant solution. The necessary formulae are presented for linear system coefficients for the considered schemes

An exploration of Service Design Jam and its ability to Foster Social Enterprise

Social enterprises (SE) are valued as innovative solutions to complex problems but require conditions to nurture and support them. Most support systems rely on individuals who already have an SE idea, and there is very little research on understanding what conditions can support to cultivate the willingness and motivation to engage individuals in this activity. An exploratory study was led to understand whether a particular event, Service Design Jams can provide such conditions. The paper introduces the study of the Lufbra Jam, organised at Loughborough University, from which two social enterprises, Crop Club in 2013, and FrenPal in 2014 emerged. Through literature review desirability and feasibility were extrapolated as key variables to the formation process of social enterprises. A focus group with three Lufbra Jam organisers was led to identify important organisational elements of the Jam that were perceived to have an impact on the formation of the successful SE thus influencing the perception of desirability and feasibility of SE in individuals. The integration of the two created a thematic matrix that was used to analyse findings from the research with the participants of the two successful SE Cases. The research findings suggest that Lufbra Jam enabled individuals to identify socially and environmentally focused issues and formulate service solutions that they deemed to be desirable and feasible ideas. It also provided an insight that winning and an enterprising workshop were important SDJ elements that helped teams to recognise their service ideas not only as feasible solutions but as SE opportunity for the team to take forward

Translation practice and educational activities of the Christian missionary N.I. Ilminsky

© 2016, Ecozone, OAIMDD. All rights reserved.The article briefly reviews the Christianization policy of the Volga-Kama region from the Russian Federation and provides brief historical information about the baptized Tatars. The pedagogical program of the missionary N.I. Ilminsky on education of foreigners has been characterized; its causes and activities of the Translation Commission have been described. Mass Christianization of heterodox peoples of the Volga-Ural region has led to the implementation of the government task to integrate them into the socio-cultural space of Russia on the basis of spiritual unification. But for the Tatar people the Christianization turned into a socio-cultural split-up. As a result of a long-term struggle, the majority of the region inhabitants preserved their former Muslim religion