A septic B-spline collocation method for solving the generalized equal width wave equation

In this work, a septic B-spline collocation method is implemented to find the numerical solution of the generalized equal width (GEW) wave equation by using two different linearization techniques. Test problems including single soliton, interaction of solitons and Maxwellian initial condition are solved to verify the proposed method by calculating the error norms L2 and L∞ and the invariants I1, I2 and I3. Applying the Von-Neumann stability analysis, the proposed method is shown to be unconditionally stable. As a result, the obtained results are found in good agreement with the some recent results

Numerical solutions of the generalized equal width wave equation using the Petrov–Galerkin method

In this article, we consider a generalized equal width wave (GEW) equation which is a significant nonlinear wave equation as it can be used to model many problems occurring in applied sciences. Here we study a Petrov–Galerkin method for the model problem, in which element shape functions are quadratic and weight functions are linear B-splines. We investigate the existence and uniqueness of solutions of the weak form of the equation. Then, we establish the theoretical bound of the error in the semi-discrete spatial scheme as well as of a full discrete scheme at t = t n. Furthermore, a powerful Fourier analysis has been applied to show that the proposed scheme is unconditionally stable. Finally, propagation of solitary waves and evolution of solitons are analyzed to demonstrate the efficiency and applicability of the proposed scheme. The three invariants (I1, I2 and I3) of motion have been commented to verify the conservation features of the proposed algorithms. Our proposed numerical scheme has been compared with other published schemes and demonstrated to be valid, effective and it outperforms the others

Numerical investigations of shallow water waves via generalized equal width (GEW) equation

In this article, a mathematical model representing solution of the nonlinear generalized equal width (GEW) equation has been considered. Here we aim to investigate solutions of GEW equation using a numerical scheme by using sextic B-spline Subdomain finite element method. At first Galerkin finite element method is proposed and a priori bound has been established. Then a semi-discrete and a Crank-Nicolson Galerkin finite element approximation have been studied respectively. In addition to that a powerful Fourier series analysis has been performed and indicated that our method is unconditionally stable. Finally, proficiency and practicality of the method have been demonstrated by illustrating it on two important problems of the GEW equation including propagation of single solitons and collision of double solitary waves. The performance of the numerical algorithm has been demonstrated for the motion of single soliton by computing L∞ and L2 norms and for the other problem computing three invariant quantities I1, I2 and I3. The presented numerical algorithm has been compared with other established schemes and it is observed that the presented scheme is shown to be effectual and valid

Application of the collocation method with b-splines to the gew equation

In this paper, the generalized equal width (GEW) wave equation is solved numerically by using a quintic B-spline collocation algorithm with two different linearization techniques. Also, a linear stability analysis of the numerical scheme based on the von Neumann method is investigated. The numerical algorithm is applied to three test problems consisting of a single solitary wave, the interaction of two solitary waves, and a Maxwellian initial condition. In order to determine the performance of the numerical method, we compute the error in the L2- and L∞ norms and in the invariants I1, I2, and I3 of the GEW equation. These calculations are compared with earlier studies. Afterwards, the motion of solitary waves according to different parameters is designe

Petrov galerkin method with cubic B splines for solving the MEW equation

In the present paper, we introduce a numerical solution algorithm based on a Petrov-Galerkin method in which the element shape functions are cubic B-splines and the weight functions quadratic B-splines . The motion of a single solitarywave and interaction of two solitarywaves are studied. Accuracy and efficiency of the proposed method are discussed by computing the numerical conserved laws and L2 , L¥ error norms. The obtained results show that the present method is a remarkably successful numerical technique for solving the modified equal width wave(MEW) equation. A linear stability analysis of the scheme shows that it is unconditionally stable

B-spline kollokasyon yöntemi ile genelleştirilmiş eşit genişlikli dalga denkleminin sayısal çözümleri

Bu tezde GEW denkleminin sayısal çözümleri kuintik ve septik B-spline kollokasyon sonlu elemanlar yöntemi ile elde edilmiştir. Bu tez çalışması dört bölümden oluşmaktadır. Tezin birinci bölümünde; Sonlu Elemanlar Yöntemi, Spline Fonksiyonlar, B-Spline Fonksiyonlar, Kollokasyon Yöntemi, Eşit Genişlikli Dalga (EW) denklemi, Genelleştirilmiş Eşit Genişlikli Dalga (GEW) denklemi, Modifiye Edilmiş Dalga (MEW) denklemi hakkında detaylı bilgi verilmiştir. Tezin ikinci bölümünde; kuintik B-spline kollokasyon yöntemi ile genelleştirilmiş eşit genişlikli dalga denkleminin sayısal çözümleri elde edilmiştir. Tezin üçüncü bölümünde; septik B-spline kollokasyon yöntemi ile genelleştirilmiş eşit genişlikli dalga denkleminin sayısal çözümleri elde edilmiştir. Tezin son bölümünde ise elde ettiğimiz sayısal çözümlerle ilgili sonuç ve öneriler verilmiştir. Anahtar Kelimeler: Genelleştirilmiş Eşit Genişlikli (GEW) Denklemi, Kollokasyon Yöntemi, Sonlu Elemanlar Yöntemi, Spline, B-Spline

A numerical solution of the MEW equaiton using sextic B splines

In this article, a numerical solution of the modified equal width wave (MEW) equation, based on subdomain method using sextic B-spline is used to simulate the motion of single solitary wave and interaction of two solitary waves. The three invariants of the motion are calculated to determine the conservation properties of the system. L2 and L∞ error norms are used to measure differences between the analytical and numerical solutions. The obtained results are compared with some published numerical solutions. A linear stability analysis of the scheme is also investigate

Numerical solution of the modified equal width wave equation

Numerical solution of the modified equal width wave equation is obtained by using lumped Galerkin method based on cubic B-spline finite element method. Solitary wave motion and interaction of two solitary waves are studied using the proposed method. Accuracy of the proposed method is discussed by computing the numerical conserved laws L2 and L∞ error norms. The numerical results are found in good agreement with exact solution. A linear stability analysis of the scheme is also investigated

GEW ve GRLW denklemlerinin sonlu elemanlar yöntemi ile sayisal çözümleri

Bu tez c¸alıs¸masında, GEW ve GRLW denklemleri, B-spline fonksiyonlar kullanılarak kollokasyon ve Galerkin sonlu elemanlar yontemleri ile sayısal olarak çozüldü. Von-Neumann tekniği kullanılarak, lineerleştirilmis¸ algoritmaların şartsız kararlı olduğu g österildi. Sayısal algoritmalar; tek solitary dalga, iki ve üç¸ solitary dalganın etkileşimi, Maxwellian başlangıç şartı ile dalga oluşumu ve ardışık dalgaların gelişimini içeren orneklere uygulanarak test edildi. Sayısal algoritmaların performansını kanıtlamak için, L2 ve L∞ hata normları hesaplandı ve daha önce elde edilen sayısal sonuçlarla karşılaştırıldı. Sayısal algoritmaların kütle, momentum ve enerji ile ilgili ozellikleri koruduğunu göstermek için I1, I2 ve I3 ile ifade edilen korunum sabitlerindeki degişim hesaplandı. Ayrıca, solitary dalgaların farklı zamanlardaki hareketleri grafik çizilerek gosterildi