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|Title: ||Far-field behavior of waves in a relaxing gas|
|Authors: ||JENA, J|
|Issue Date: ||1997|
|Publisher: ||PERGAMON-ELSEVIER SCIENCE LTD|
|Citation: ||ACTA ASTRONAUTICA, 40(10), 713-718|
|Abstract: ||An asymptotic equation is derived which describes the far-field behavior of the governing system of partial differential equations for a one dimensional unsteady plane and radially symmetric Bow of an inviscid relaxing gas; this evolution equation, is a generalized Burger's equation, which enables us to study in detail the various effects that appear in the propagation of plane, cylindrical and spherical waves in a dissipative medium with a quadratic nonlinearity. An approximate solution of this equation is obtained by using the method of matched asymptotic expansions; the method enables us to determine how the shock amplitude and the shift in the shock center are influenced by the relaxation effects. (C) 1997 .|
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