Numerical dissipation switch for two-dimensional central-upwind schemes

We propose a numerical dissipation switch, which helps to control the amount of present in central-upwind schemes. Our main goal is reduce without risking oscillations. This achieved with help more accurate estimate local propagation speeds parts computational domain, are near contact discontinuities and shears. To this end, we introduce switch parameter, depends on distributions energy x - y -directions. The resulting new tested number examples, demonstrate superiority proposed method over original scheme.