We designed five kinds of fluid pipeline and nozzle position and simulated the fluid field to make the bit clear . after comparing the simulation results we chose one better construction of fluid pipeline and nozzle position 为了分析钻头的井底流场特性，针对钻头的结构设计了五种流道形式和喷嘴组合方式，并分别进行了模拟和分析，最终选择了一种比较理想的喷嘴布置方式。
