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1 Introduction

1.1 Research Background and Significance

1.2 Overview of Fire Monitor Development at Home and Abroad

1.2.1 Basic Concepts for Fire Monitors

1.2.2 Overview of Fire Monitor Products at Home and Abroad

1.2.3 Equipping and Using of Fire Monitors in China

1.2.4 Comparison of Fire Monitor at Home and Abroad

1.3 Research Status of Fire Monitor

2 Basic Theory and Structural Design of Fire Monitor Jet

2.1 Basic Theory of Fire Monitor Jet

2.2 Structural Design of Fire Monitor

2.3 Fire Monitor Test Bench and PIV System

3 Rotary Structure and Internal Flow of Fire Monitor Seat

3.1 Rotary Structure Design of Monitor Seat

3.2 Internal Flow Calculation of Monitor Seat

3.2.1 Mathematical Model and Boundary Conditions of Numerical Simulation of Flow Field in Monitor Seat

3.2.2 Economic Diameter (Limit Value of Economic Velocity) Design of Monitor Seat

3.3 Comparative Analysis of Numerical Simulation of Internal Flow in Monitor Seat

3.3.1 Numerical Simulation Analysis of Three Monitor Seat Outlets and Internal Flow Regime

3.3.2 Secondary Flow Analysis and Internal Flow of the Flow Field in Monitor Seat with Large Rotary Structure

3.4 Influence of Guide Vane in Monitor Seat on Flow Field Parameters

3.4.1 Influence of Guide Vane Length

3.4.2 Influence of Guide Vane Migration Position

3.5 PIV Experiment of Monitor Seat and Comparison with Numerical Simulation

4 Rectification Performance of Fire Monitor Tube

4.1 Tube Rectifier Design

4.2 Analysis and Comparison of Rectification Performance

4.2.1 Mathematical Model, Boundary Conditions and Comparative Schemes for Rectification Performance Research of Monitor Tube

4.2.2 Comparison of Rectification Performance with Same Rectifier Volume

4.2.3 Comparison of Rectification Performance with Same Overflow Surface Area of Rectifier

4.2.4 Comparison of Rectification Performance with the Setting of Rectifier in the Mid-section of the Straight Pipe of the Monitor Tube

4.2.5 Comparison of Rectification Performance with Equal Wall Thickness of Rib Plate of Rectifier

4.2.6 Economic Length of Rectifier

4.2.7 Influences of Rectifier on the Velocity of Outlet Straight Pipe Section

4.2.8 Influences of Different Positions of Rectifiers in Monitor Tube on Rectification Performance

4.2.9 Influences of Water Monitor Outlet Elevation Angle on Rectification Performance

4.2.10 Influences of Rectifier In-outlet Chamfer on Rectification Performance

4.2.11 Influences of Multiple Rectifiers on Rectification Performance

4.3 Orthogonal Test Analysis of Influencing Factors of Rectification Performance

4.4 Effectiveness Analysis of Rectifier on Pressure Fluctuation

5 Performance of Fire Monitor Nozzle

5.1 Design of Nozzles

5.1.1 Nozzle Structure Selection

5.1.2 Design of the Nozzle Outlet Diameter

5.1.3 Contraction Angle of Nozzle Contraction Section

5.1.4 Length-diameter Ratio of Nozzle Outlet Straight Pipe Section

5.2 Large y Simulation of Flow Field in Nozzle

5.2.1 Large y Simulation Theory

5.2.2 Nozzle Simulation Scheme

5.2.3 Analysis of Large y Simulation Results

5.3 Characteristics Analysis of Nozzle Turbulence

5.3.1 Turbulence Intensity Distribution

5.3.2 Reynolds Stress Distribution

5.3.3 Coherent Structure of Turbulence in the Nozzle

5.4 PIV Experiment of Internal Flow Field in the Nozzle

6 External Jet Characteristics of Fire Monitor

6.1 Jet Stability

6.2 Calculation Methods of Jet Range

6.3 Calculation Methods of Jet Height

6.4 Optimal Elevation Angle of Jets

6.5 Jet Trajectory

6.5.1 Mathematical Model of Jet Trajectory

6.5.2 Determination of Coefficients in Jet Trajectory Models

6.5.3 Influences of Wind on Jet Trajectory

6.6 Droplet Distribution of Jets

6.6.1 Test Methods of Water

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