Fracture geometry depends on stresses and rock
properties in hydraulic fracturing operation. Poisson’s
ratio imports directly in the calculations related to
formation stresses. The most important reason for
limiting fracture height is the natural stresses contrast
resulting from the differences with Poisson ratios.
Without this difference, fracture would have largely
uncontrolled height. The goal of this study is
mathematical investigation of the effect of Poisson’s
ratio on the formation stresses that is necessary to select
value of breakdown pressure in hydraulic fracturing
operation. In this article, a mathematical model has been
coded using “MATLAB” software for prediction of
stresses in the various layers. This designed program is
able to present both digital and graphical output results
for different values of Poisson’s ratio. At the end,
stresses exerted on the different layers of the several real
oil reservoirs have simulated and breakdown pressures
have determined
The article proposes an approach to constructing a
methodology for modeling managerial situations in the
construction of real estate objects using a hierarchical
system and choosing a developer company to be
charged with the construction of real estate. A
comprehensive methodology has been developed on
the basis of which it is possible to forecast problem
situations that arise during the construction of a real
estate object and conduct a scientifically valid choice
of a developer company
The variant of the decision of a task of management of a transport resource of buses is submitted on the basis of the current information on a condition of a route. The real speed of movement of transport, change of number of the passengers is taken into account. The considered task concerns to a class of extreme tasks on networks and is complicated by a set of restrictions
On the base of the smoothed particles hydrodynamics method, the mathematical model of plasma coating process on details surfaces in the mode of electrical parameters modulation is performed. This model al-lowed optimizing the plasma coating process parame-ters
The process of drying of a corrugated cardboard is described and the mathematical model is resulted in this article. Questions of use of the received model are considered at process research
A mathematical model of the process of adhesive bonding of wood with glues, treated by an electric field, is suggested. The model allows determining the dependence of the strength of adhesive joints on tech-nological process parameters
The methods of modeling of radiating effects of microcircuits in microcircuits are submitted. The technique of designing, information and lingware is considered. The methods of an estimation of stability to transitive effects are offered
The article is devoted to the mathematical modeling of the air temperature changing process in intergranular space during the microwave-recirculation grain drying with active aeration
The urgency of models and algorithms of adaptive control of fish filleting process researches has been shown. The structure of adaptive automatic management system of filleting equipment, including estimator in the form of consequent statistical analyzer and adaptator as a linear tactic automaton, is offered. The lite recurrent model of adaptation algorithm for statistical tests by Monte-Carlo method and results of modeling is offered, modeling results were stated.
The article has examined the application and found the
processes that need to be automated. The advantages
of this method of automation of the technical support
service are considered. Using the unified modeling
language (UML), an information system model is
constructed based on the information received. Using
the developed model, the method of accounting for
channel services and equipment will be automated, as
well as the process of interaction with customers