TY - JOUR TI - New multi-soliton solutions of Whitham-Broer-Kaup shallow-water-wave equations AU - Zhang Sheng AU - Liu Mingying AU - Xu Bo JN - Thermal Science PY - 2017 VL - 21 IS - 11 SP - 137 EP - 144 PT - Article AB - In this paper, new and more general Whitham-Broer-Kaup equations which can describe the propagation of shallow-water waves are exactly solved in the framework of Hirota's bilinear method and new multi-soliton solutions are obtained. To be specific, the Whitham-Broer-Kaup equations are first reduced into Ablowitz- Kaup-Newell-Segur equations. With the help of this equations, bilinear forms of the Whitham-Broer-Kaup equations are then derived. Based on the derived bilinear forms, new one-soliton solutions, two-soliton solutions, three-soliton solutions, and the uniform formulae of n-soliton solutions are finally obtained. It is shown that adopting the bilinear forms without loss of generality play a key role in obtaining these new multi-soliton solutions.