【摘要】 该研究应用PIV系统(粒子成像测速仪)这种先进的流场测试技术在不干扰流场的情况下,进行高精度的测量,即利用撒在流体中的粒子对光的散射作用,用光学的方法记录下粒子在不同时刻的位置,从而得到粒子的位移,基于粒子对流场的跟随性,测出水流在离心泵叶片流道内的绝对速度分布,并利用软件进行数据处理,得到离心叶轮内部从吸力边到压力边相对速度的分布,为离心泵的设计提供了更为可靠的理论依据。更多还原

【Abstract】 This research made use of system of PIV (Particle Image Velocimeter), the advanced measuring technique of fluid field, to perform high precision measurement under the situation of not disturbing the fluid field, namely, utilizing the scatter effect of particles, being spread in the fluid, against light and using the optics method to record the position of particle at different time, there by obtained the displacement of particle. Based on the following features of particles against fluid field, the absolute velocity distribution of flow inside the blade passage of centrifugal pump was measured, and using software to carry out data processing, so as to obtain the relative velocity distribution from suction side to pressure side inside the centrifugal impeller, and thus provided a more reliable theoretical base for the design of centrifugal pump.更多还原