Willy Hereman ; Rehana Naz - Conservation laws of nonlinear PDEs arising in elasticity and acoustics in Cartesian, cylindrical, and spherical geometries

ocnmp:17124 - Open Communications in Nonlinear Mathematical Physics, December 25, 2025, Special Issue in honour of George W Bluman - https://doi.org/10.46298/ocnmp.17124
Conservation laws of nonlinear PDEs arising in elasticity and acoustics in Cartesian, cylindrical, and spherical geometriesArticle

Authors: Willy Hereman ; Rehana Naz

    Conservation laws are computed for various nonlinear partial differential equations that arise in elasticity and acoustics. Using a scaling homogeneity approach, conservation laws are established for two models describing shear wave propagation in a circular cylinder and a cylindrical annulus. Next, using the multiplier method, conservation laws are derived for a parameterized system of constitutive equations in cylindrical coordinates involving a general expression for the Cauchy stress. Conservation laws for the Khokhlov-Zabolotskaya-Kuznetsov equation and Westervelt-type equations in various coordinate systems are also presented.

    To appear in Open Communications in Nonlinear Mathematical Physics. Special Issue in Honor of George W. Bluman, 2025 (27 pages, 6 tables, 54 references)


    Volume: Special Issue in honour of George W Bluman
    Published on: December 25, 2025
    Accepted on: December 21, 2025
    Submitted on: December 16, 2025
    Keywords: Analysis of PDEs, Mathematical Physics, Exactly Solvable and Integrable Systems, 35A30, 37K05, 76Q05