نتایج جستجو برای: predictor homotopy analysis method

تعداد نتایج: 4041459  

Journal: :نظریه تقریب و کاربرد های آن 0
h. vosoughi department of mathematics, faculty of science, islamshahr branch, islamic azad university, islamshahr, tehran, iran e. shivanian department of mathematics, imam khomeini international university, qazvin, 34149-16818, iran m. anbarloei department of mathematics, faculty of science, islamshahr branch, islamic azad university, islamshahr, tehran, iran

the purpose of this letter is to revisit the nonlinear reaction-di usion modelin porous catalysts when reaction term is fractional function of the concen-tration distribution of the reactant. this model, which originates also in uidand solute transport in soft tissues and microvessels, has been recently givenanalytical solution in terms of taylors series for di erent family of reactionterms. we...

پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1390

بررسی وجود و چندگانگی جوابهای معادلات دیفرانسیل به ویژه با شرایط مرزی اغلب بسی دشوار بوده و همراه با گام های ملالت آور می باشد بطوریکه همواره نیاز به پیش شرط هایی می باشد که معادلات دیفرانسیل با شرایط مرزی مورد نظر باید داشته باشد. بنابراین اثبات آنالیزی وجود و چندگانگی جوابهای مسائل مقدار مرزی غیر خطی اغلب غیر ممکن می باشد. روشهای تقریبی- تحلیلی یا روشهای عددی صرفاً برای بدست آوردن جواب موجود ...

Journal: :iranian journal of optimization 2010
h. saberi-nik s. effati r. buzhabadi

in this paper, we give an analytical approximate solution for an integro- differential equation which describes the charged particle motion for certain configurations of oscillating magnetic fields is considered. the homotopy analysis method (ham) is used for solving this equation. several examples are given to reconfirm the efficiency of these algorithms. the results of applying this procedure...

Journal: :iranian journal of optimization 2009
h. jafari m. saeidy m. arab firoozjaee

in this paper, nonlinear klein-gordon equation with quadratic term is solved by means of an analytic technique, namely the homotopy analysis method (ham).comparisons are made between the adomian decomposition method (adm), the exact solution and homotopy analysis method. the results reveal that the proposed method is very effective and simple.

Journal: :نظریه تقریب و کاربرد های آن 0
آ عزیزی دانشگاه پیام نور تهران ج سعیدیان دانشگاه خوارزمی تهران ا بابلیان دانشگاه خوارزمی تهران

although homotopy-based methods, namely homotopy analysis method andhomotopy perturbation method, have largely been used to solve functionalequations, there are still serious questions on the convergence issue of thesemethods. some authors have tried to prove convergence of these methods, butthe researchers in this article indicate that some of those discussions are faulty.here, after criticizi...

Journal: :iranian journal of science and technology (sciences) 2015
s. m. hosseini harat

in this study, a new efficient semi-analytical method is introduced to give approximate solutions of strongly nonlinear oscillators. the proposed method is based on combination of two different methods, the multi-step homotopy analysis method and spectral method, called the multi-step spectral homotopy analysis method (msham). in this method, firstly, we propose a new spectral homotopy analysis...

E. Shivanian, H. Vosoughi M. Anbarloei

The purpose of this letter is to revisit the nonlinear reaction-diusion modelin porous catalysts when reaction term is fractional function of the concen-tration distribution of the reactant. This model, which originates also in uidand solute transport in soft tissues and microvessels, has been recently givenanalytical solution in terms of Taylors series for dierent family of reactionterms. We a...

Journal: :journal of heat and mass transfer research 0
a.k. abdul hakeem assistant professor department of mathematics sri ramakrishna mission vidyalaya college of arts and science, coimbatore, tamil nadu b. ganga department of mathematics,providence college for women, coonoor - 643 104, india s. mohamed yusuff ansari department of mathematics, jamal mohamed college, trichy - 6420 020, india n.vishnu ganesh of mathematics, sri ramakrishna mission vidyalaya college of arts & science, coimbatore - 641 020, india.

mhd boundary layer flow of two phase model nanofluid over a vertical plate is investigated both analytically and numerically. a system of governing nonlinear partial differential equations is converted into a set of nonlinear ordinary differential equations by suitable similarity transformations and then solved analytically using homotopy analysis method and numerically by the fourth order rung...

Journal: :international journal of mathematical modelling and computations 0
m. matinfar university of mazandaran iran, islamic republic of m. ghasemi iran, islamic republic of

in this paper, elzaki homotopy perturbation method is employed for solving linear and nonlinear differential equations with a variable coffecient. this method is a combination of elzaki transform and homotopy perturbation method. the aim of using elzaki transform is to overcome the deficiencies that mainly caused by unsatised conditions in some semi-analytical methods such as homotopy perturbat...

Journal: :نظریه تقریب و کاربرد های آن 0
m. paripour department of mathematics, islamic azad university, hamedan branch , hamedan, 6518118413, iran. j. saeidian department of mathematics and computer science, tarbiat moallem university, 599 taleghani avenue, tehran 1561836314, iran.

omotopy analysis method (ham) is a promising method for handling func-tional equations. recent publications proved the e ectiveness of ham in solvingwide variety of problems in di erent elds. ham has a unique property whichmakes it superior to other analytic methods, this property is its ability to con-trol the convergence region of the solution series. in this work, we clari ed theadvantages ...

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