3/48 7.1 Local Flow Velocity,Magnitude and Direction 1.Flow Visualization gives an overall view of flow patterns 2.Velocity Magnitude from Pitot-Static Tube(皮托静压管) 3.Velocity Direction from Yaw Tube(偏航管)，Pivoted Vane(叶轮)and Servoed Sphere 4.Dynamic Wind-Vector(风矢量)Indicator 5.Hot-Vire and Hot-Film Anemometers(风速计) 6.Hot-Film Shock-Tube激波管)Velocity Sensors 7.Laser Doppler Anemometer 4/48 7.1.0 Flow Classifications ◆Classifications: Single-phase flow Two-phase flow Multi-phase flow ◆Flow Patterns: 2. (a)Two-phase Flow Patterns in Vertical Upflow Bubby Slug Churn Wispy-Annular Annular Bubbly Slug (b)Two-phase Flow Patterns in 0 Horizontal Flow Plug Annular 0 Stratified Annular with Mist Flow Figure 7.0 Gas/Liquid Flow Patterns Wave7.1 Local Flow Velocity, Magnitude and Direction 1. Flow Visualization gives an overall view of flow patterns 2. Velocity Magnitude from Pitot-Static Tube (皮托静压管) 3. Velocity Direction from Yaw Tube (偏航管), Pivoted Vane(叶轮) and Servoed Sphere 4. Dynamic Wind-Vector(风矢量) Indicator 5. Hot-Wire and Hot-Film Anemometers(风速计) 6. Hot-Film Shock-Tube(激波管) Velocity Sensors 7. Laser Doppler Anemometer 3/48 7.1.0 Flow Classifications ‹ Classifications: − Single-phase flow − Two-phase flow − Multi-phase flow ‹ Flow Patterns: Figure 7.0 Gas/Liquid Flow Patterns (a) Two-phase Flow Patterns in Vertical Upflow (b) Two-phase Flow Patterns in Horizontal Flow 4/48