Nozzle and Diffuser V2>V1 P2<P1 Nozzle:velocity T in the direction of flow 、A↓ Flow-straigftening Nozzle Screens Cross-sectional area (A)varying Acceleration Deceleration Test V2<V1 LNozzle section P2>P1 A↑ Practical application Diffuser:velocity in the direction of flow Diffuser 上游充通大 March 31,2018 3 SHANGHAI JIAO TONG UNIVERSITYMarch 31, 2018 3 Nozzle and Diffuser Nozzle: velocity ↑ in the direction of flow Diffuser: velocity ↓ in the direction of flow Cross-sectional area (A) varying A ↓ A ↑ Practical application