Sökning: "formal Lagrangian"

Hittade 2 uppsatser innehållade orden formal Lagrangian.

1. 1. Application of Ibragimov's method and Noether's theorem for constructing conservation laws of the linear elasticity model

   Master-uppsats, Blekinge Tekniska Högskola/Institutionen för matematik och naturvetenskap

   Författare :Pouya Sinaian; [2014]
   Nyckelord :conservation law; Noether s theorem; Ibragimov s method; formal Lagrangian; linear elasticity; the Lame equation.;

   Sammanfattning : In this thesis, conservation laws of the Lame equation describing linear elasticity have been constructed. This has been done by the implementation of two theorems for constructing conservation laws: the new theorem suggested by N H.Ibragimov, and the classical theorem presented by E.Noether. LÄS MER

3. 2. Investigation of the Mathematical Model of Acoustic Waves in a Fluid with Bubbles Using Lie Group Analysis Method

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Erkan Karagözlü; [2012]
   Nyckelord :Acoustic waves; fluid with bubbles; formal Lagrangian; nonlinear self-adjointness; Lie group analysis; conservation law; invariant solution;

   Sammanfattning : This thesis comprises investigation of the mathematical model of acoustic waves in a fluid with bubbles for nonlinear self-adjointness, Lie point symmetries, conservation laws and invariant solutions. It is based on the theory developed recently by Prof. Nail Ibragimov. LÄS MER