精密滴灌灌水器快速响应开发的方法

提出一种快速响应开发方法，首先将流道设计成参数化、尺寸驱动的三维模型。然后，利用数值模拟的方法得到水流压力、速度分布等微观水力特征，并以此分析新型结构流道的消能原理及效果。最后，利用快速成形技术制造出多种结构形式的一体式灌水器原型，同时利用这些原型直接完成性能试验。以自行开发的新型绕流灌水器为例，对比传统开发方法，其开发成本和周期均减少50％以上。

Study on the Rapid Respond Method to Develop Precise Drip Emitters

A rapid respond method of developing precise drip emitter was proposed. At first, the emitter channel was designed into a parameterized dimension-driven three-dimensional CAD model. Then, the flow in the emitter was simulated by the computational fluid dynamics, and some micro hydraulic performances such as pressure and velocity distributions were obtained. These visual simulated results were helpful to analyze the dissipation principle and degree. Finally, the monolithic emitter prototypes with manifold shapes were manufactured by the rapid prototyping technique, and then the performance experiments were completed directly with these emitter prototypes. Taking the new round-flow emitter developed by us as an example, the time and cost of development have been decreased by more than 50% compared to the traditional method.