This paper uses the boundary layer theory to obtain an asymptotic solution of the nonlinear educed wave equation. This solution is valid in the secular region where the geometrical optics result fails. However it agre...This paper uses the boundary layer theory to obtain an asymptotic solution of the nonlinear educed wave equation. This solution is valid in the secular region where the geometrical optics result fails. However it agrees with the geometrical optics result when the field is away from the secular region. By using this solution the self-focusing length can also be obtained.展开更多
Because of the amalgamation of coal resourcesin Shanxi Province in 2009, coal production centermoved westward in China. The coal outputs of InnerMongolia and Shaanxi got higher. From January
文摘This paper uses the boundary layer theory to obtain an asymptotic solution of the nonlinear educed wave equation. This solution is valid in the secular region where the geometrical optics result fails. However it agrees with the geometrical optics result when the field is away from the secular region. By using this solution the self-focusing length can also be obtained.
文摘Because of the amalgamation of coal resourcesin Shanxi Province in 2009, coal production centermoved westward in China. The coal outputs of InnerMongolia and Shaanxi got higher. From January
