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Wyszukujesz frazę "Gürbüz, M." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Stokes flow in lid-driven cavity under inclined magnetic field
    Autorzy:
    Gürbüz-Çaldag, M.
    Çelik, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/38695704.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    radial basis function
    MHD
    Stokes flow
    inclination angle
    Opis:
    Stokes flow in a lid-driven cavity under the effect of an inclined magnetic field is studied. The radial basis function (RBF) approximation is employed to the magnetohydrodynamic (MHD) equations which include Navier-Stokes equations of fluid dynamics and Maxwell’s equations of electromagnetics through Ohm’s law with the Stokes approximation. Numerical results are obtained for the moderate Hartmann number (0 ≤ M ≤ 80) and different angles of a magnetic field (0 ≤ α ≤ π). It is found that the increase in the Hartmann number causes the development of new vortices under the main flow due to the impact of a magnetic field. However, the type of the inclination angle (acute or obtuse) determines the location of the vortices.
    Źródło:
    Archives of Mechanics; 2022, 74, 6; 549-564
    0373-2029
    Pojawia się w:
    Archives of Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laguerre polynomial solutions of a class of initial and boundary value problems arising in science and engineering fields
    Autorzy:
    Gürbüz, B.
    Sezer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1061583.pdf
    Data publikacji:
    2016-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    02.30.Gp
    02.30.Hq
    02.70
    Opis:
    In this study, we consider high-order nonlinear ordinary differential equations with the initial and boundary conditions. These kinds of differential equations are essential tools for modelling problems in physics, biology, neurology, engineering, ecology, economy, astrophysics, physiology and so forth. Each of the mentioned problems are described by one of the following equations with the specific physical conditions: Riccati, Duffing, Emden-Fowler, Lane Emden type equations. We seek the approximate solution of these special differential equations by means of a operational matrix technique, called the Laguerre collocation method. The proposed method is based on the Laguerre series expansion and the collocation points. By using the method, the mentioned special differential equations together with conditions are transformed into a matrix form which corresponds to a system of nonlinear algebraic equations with unknown Laguerre coefficients, and thereby the problem is approximately solved in terms of Laguerre polynomials. In addition, some numerical examples are presented to demonstrate the efficiency of the proposed method and the obtained results are compared with the existing results in literature.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 1; 194-197
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laguerre Polynomial Solutions of a Class of Delay Partial Functional Differential Equations
    Autorzy:
    Gürbüz, B.
    Sezer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031231.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    Laguerre polynomials and series
    delay partial differential equations with integral terms
    matrix and collocation methods
    error estimations
    Opis:
    In this study, we develop a novel matrix collocation method based on the Laguerre polynomials to find the approximate solutions of some parabolic delay differential equations with integral terms subject to appropriate initial and boundary conditions. The method reduces the solution of the mentioned equations to the solution of a matrix equation which corresponds to system of algebraic equations with unknown Laguerre coefficients. Besides, the error analysis together with numerical results are performed to illustrate the efficiency of our method computationally.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 558-560
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation on Mechanical Properties and Microstructures of Aluminum Hybrid Composites Reinforced with Al2O3/GNPs Binary Particles
    Autorzy:
    Şenel, M. Can
    Gürbüz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049630.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    composite
    aluminum
    graphene
    alumina
    hybrid
    Opis:
    Nowadays, aluminum-based composites have been produced by pure alumina (Al2O3) or pure graphene nanoplatelets (GNPs) in aluminum matrix because of the high compressive strength of alumina and the solid lubricant properties of graphene. However, there are no studies on the influence of both alumina and graphene reinforced aluminum composites. In this study, Al-Al2O3 and Al-Al2O3-GNPs composites were reinforced with pure alumina (between 0 and 30 wt.%), pure graphene (0, 0.1, 0.3, 0.5 wt.%), and their hybrid forms (Al2O3-GNPs) by the powder metallurgy method. This method involved ultrasonic dispensing, mixing, filtering, drying, pressing, and sintering processes. From the test results, the micro Vickers hardness of pure aluminum (28.2±1 HV) improved to 51.5±0.8 HV (Al-30Al2O3) and 63.1±1 HV (Al-30Al2O3-0.1GNPs). Similarly, the ultimate compressive strength (UCS) enhanced from 92.4±4 MPa (pure aluminum) to 165±4.5 MPa (Al-30Al2O3) and 188±5 MPa (Al-30Al2O3-0.1GNPs), respectively. In conclusion, the Vickers hardness and ultimate compressive strength of aluminum hybrid composites improved up to 0.1 wt.% graphene content. After 0.1 wt.% graphene content, these mechanical properties decreased because of the clumping of graphene nanoparticles.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 1; 97-106
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EXAMINATION OF THE COMMUNICATION SKILLS AND TEAM WORKABILITY OF SPORTS STUDENTS ACCORDING TO A RANGE OF VARIABLES
    Autorzy:
    Mızrak, Orcan
    Gürbüz, Ali
    Belli, Emre
    Kurudirek, M.A.
    Bayraktaroğlu, Yeşim Songün
    Powiązania:
    https://bibliotekanauki.pl/articles/449245.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
    Tematy:
    communication skills
    team workability
    sports students
    Opis:
    The aim of this study is to examine the communication skills and team workability of students educated in sports education in universities according to a range of variables. In the study, a personal information form was used to identify the university, department, class and sports branches of participants. The communication skills scale developed by Ersanlı and Balcı in 1998 was used to determine communication skills. For the determination of team workability, the Team Workability Scale developed by Tuncer in 2008 was used. 165 Students from Atatürk and Kafkas University participated in the study. Frequency analysis and parametric statistical analyses were used in the study. As a result of the study, it was determined that the participants had moderate levels (X=3,56±,861) of communication skills and the majority of the participants have responsibility (n=105 %64). According to the variables of the communication skills and team workability of the students who studied sports education in universities, the communication skills levels did not change statistically according to the universities and departments variables of the participants. The highest average of communication skills amongst the participants are mental skills. (X=3,86±,414). The lowest average of the communication skills of the participants are behavioral. (X=2,44±,616). On the other hand, it has been determined that the team sports athletes among the participants have high averages on Collaboration and Teamwork in team workability. (n=98 %59,39).
    Źródło:
    Journal of Physical Education & Health - Social Perspective; 2017, 6, 10; 27-34
    2084-7971
    Pojawia się w:
    Journal of Physical Education & Health - Social Perspective
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of lichens as bio-indicators of metal pollution
    Ocena porostów jako biologicznych wskaźników zanieczyszczenia metalami
    Autorzy:
    Aslan, A.
    Gurbuz, H.
    Yazici, K.
    Cicek, A.
    Turan, M.
    Ercisli, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/15640.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    The objectives of this study have been to determine the impact of the distance from acombustor of a cement plant (downwind direction) and duration of exposure to pollution on the bioaccumulation of metals by four lichen species. Nickel, cadmium, chromium, cop- per and lead accumulated in lichen thalli, with the highest accumulation occurring at 50 m of the cement plant and upon prolonged exposure. In contrast, the concentrations of Al were not consistently affected by the distance from the plant or the duration of exposure. Pseudevernia furfuracea was most effective as an indicator of cement dust pollution. We concluded that transplantation of Pseudevernia furfuracea on trees or shrubs can be an easy and cost-effective means of Ni, Cd, Cr, Cu and Pb pollution monitoring.
    Źródło:
    Journal of Elementology; 2013, 18, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A New Computational Method Based on Laguerre Polynomials for Solving Certain Nonlinear Partial Integro Differential Equations
    Autorzy:
    Gürbüz, B.
    Sezer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031188.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    nonlinear partial integro-differential equations
    Laguerre polynomials
    matrix and collocation methods
    error estimations
    Opis:
    In this study, we consider some nonlinear partial integro-differential equations. Most of these equations are used as mathematical models in many problems of physics, biology, chemistry, engineering, and in other areas. Our main purpose is to propose a new numerical method based on the Laguerre and Taylor polynomials, called matrix collocation method, for the numerical solution of the mentioned nonlinear equations under the initial or boundary conditions. To show the effectiveness of this approach, some examples along with error estimations are illustrated by tables and figures.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 561-563
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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