Yazar "0000-0001-8590-3396" için FEF - Makale Koleksiyonu | Matematik Bölümü / Department of Mathematics listeleme
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The modified reductive perturbation method as applied to Boussinesq equation: strongly dispersive case
Demiray, Hilmi (Elsevier Science Inc, 2005-05-05)In this work, we extended the application of "the modified reductive perturbation method" to Boussinesq equation for strongly dispersive case and tried to obtain the contribution of higher order terms in the perturbation ... -
A modified reductive perturbation method as applied to nonlinear ion-acoustic waves
Demiray, Hilmi (Physical Society Japan, 1999-06)The basic equations describing the nonlinear ion-acoustic waves in a cold collisionless plasma, in the longwave limit, is re-examined through the use of a modified reductive perturbation method. Introducing the concept of ... -
The modified reductive perturbation method as applied to the Boussinesq equation
Demiray, Hilmi (Verlag Z Naturforsch, 2007-08)In this work, we extended the application of "the modified reductive perturbation method" to long water waves and obtained the governing equations of Korteweg-de Vries (KdV) hierarchy. Seeking localized travelling wave ... -
Modulation of cylindrical (spherical) waves in a plasma with vortex electron distribution
Demiray, Hilmi (American Institute of Physics Inc., 2018-07-01)In the present work, employing cylindrically (spherically) symmetric field equations of a plasma consisting of a cold electron fluid, hot electrons obeying a trapped/vortex-like distribution and stationary ions, we studied ... -
Modulation of electron-acoustic waves in a plasma with kappa distribution
Demiray, Hilmi (American Institute of Physics Inc., 2016-03)In the present work, employing a one dimensional model of an unmagnetized collisionless plasma consisting of a cold electron fluid, hot electrons obeying κ velocity distribution, and stationary ions, we study the amplitude ... -
Modulation of electron-acoustic waves in a plasma with vortex electron distribution
Demiray, Hilmi (Walter De Gruyter GMBH, 2015-04)In the present work, employing a one-dimensional model of a plasma composed of a cold electron fluid, hot electrons obeying a trapped/vortex-like distribution and stationary ions, we study the amplitude modulation of ... -
Modulation of generalized symmetric regularized long-wave equation: generalized nonlinear Schrödinger equation
Demiray, Hilmi (Freund Publishing House Ltd, 2010-12)In this work, the application of "the modified reductive perturbation method" is extended to the generalized symmetric regularized long-wave equation for strongly dispersive case and the contribution of higher order terms ... -
Modulation of non-linear axial and transverse waves in a fluid-filled thin elastic tube
Akgün, Güler; Demiray, Hilmi (Pergamon-Elsevier Science, 2000-07)In the present work, utilizing the non-linear equations of a pre-stressed thin elastic tube filled with an incompressible inviscid fluid the propagation of weakly non-linear waves in such a medium is studied. Considering ... -
Modulation of non-linear waves in a viscous fluid contained in an elastic tube
Demiray, Hilmi (Pergamon-Elsevier Science, 2001-06)In the present work, utilizing the non-linear equations of a prestressed thin elastic tube filled with an incompressible viscous fluid the propagation of weakly non-linear waves in such a medium is studied. Considering ... -
Modulation of nonlinear waves in a thin elastic tube filled with a viscous fluid
Demiray, Hilmi (Pergamon-Elsevier Science Ltd, 1999-11)In the present work, utilizing the nonlinear equations of a prestressed thin elastic tube filled with an incompressible viscous fluid the propagation of weakly nonlinear waves in such a medium is studied. Considering that ... -
Modulation of nonlinear waves in a viscous fluid contained in a tapered elastic tube
Demiray, Hilmi (Pergamon-Elsevier Science, 2002-10)In the present work, treating the arteries as a tapered, thin walled, long and circularly conical prestressed elastic tube and the blood as a Newtonian fluid, we have studied the amplitude modulation of nonlinear waves in ... -
Modulation of nonlinear waves near the marginal state of instability in fluid-filled elastic tubes
Bakırtaş, İlkay; Demiray, Hilmi (Elsevier Inc, 2004-02-05)Using the nonlinear differential equations governing the motion of a fluid-filled and prestressed long thin elastic tube, the propagation of nonlinear waves-near the marginal state is examined through the use of reductive ... -
Modulational instability of acoustic waves in a dusty plasma with nonthermal electrons and trapped ions
Demiray, Hilmi; Abdikian, Alireza (Pergamon-Elsevier Science Ltd, 2019-04)In the present work, employing the nonlinear field equations of a hot dusty plasma in the presence of nonthermal electrons and trapped ions, we studied the amplitude modulation of nonlinear waves in such a plasma medium ... -
Modulational instability of three dimensional waves in a plasma with vortex electron distribution
Demiray, Hilmi (Işık University Press, 2019-02-10)In the present work, employing the three dimensional equations of a plasma composed of a cold electron fluid, hot electrons obeying a trapped / vortex-like distribution, and stationary ions, we study the amplitude modulation ... -
Multiple time scale formalism and its application to long water waves
Demiray, Hilmi (Elsevier Science Inc, 2010-05)In the present work, by employing the multiple time scaling method, we studied the non-linear waves in shallow-water problem and obtained a set of Korteweg-deVries equations governing the various order terms in the ... -
Multiple-scale expansion for nonlinear ion-acoustic waves
Demiray, Hilmi (Freund Publishing House Ltd, 2010-08)By employing the multiple-scale expansion method, the present work examines non-linear waves in a cold collision less plasma, in the long-wave limit, and obtains a set of KdV equations governing various order terms in the ... -
Non-linear waves in a fluid-filled inhomogeneous elastic tube with variable radius
Demiray, Hilmi (Pergamon-Elsevier Scıence Ltd, 2008-05)In the present work, by employing the non-linear equations of motion of an incompressible, inhomogeneous, isotropic and prestressed thin elastic tube with variable radius and the approximate equations of an inviscid fluid, ... -
Non-linear waves in a viscous fluid contained in an elastic tube with variable cross-section
Demiray, Hilmi (Elsevier Ltd, 2006-04)In the present work, treating the large arteries as a thin-walled, long and circularly cylindrical, prestressed elastic tube with variable cross-section and using the reductive perturbation method, we have studied the ... -
Nonlinear wave modulation in a fluid-filled elastic tube with stenosis
Demiray, Hilmi (Verlag Z Naturforsch, 2008-01)In the present work, treating the arteries as a thin-walled and prestressed elastic tube with a stenosis and the blood as a Newtonian fluid with negligible viscosity, we have studied the amplitude modulation of nonlinear ... -
Nonlinear wave modulation in a fluid-filled linearly tapered elastic tube
Demiray, Hilmi (Gauthier-Villars/Editions Elsevier, 2003-08)In the present work, treating the arteries as a thin-walled, linearly tapered, prestressed elastic tube and using the reductive perturbation method, we have studied the amplitude modulation of nonlinear waves in such a ...