Firefighter Nozzle Reaction

@article{Chin2017FirefighterNR,
  title={Firefighter Nozzle Reaction},
  author={S. K. Chin and Grunde Jomaas and Peter B. Sunderland},
  journal={Fire Technology},
  year={2017},
  volume={53},
  pages={1907-1917}
}
Nozzle reaction and hose tension are analyzed using conservation of fluid momentum and assuming steady, inviscid flow and a flexible hose in frictionless contact with the ground. An expression that is independent of the bend angle is derived for the hose tension. If this tension is exceeded owing to anchor forces, the hose becomes straight. The nozzle reaction is found to equal the jet momentum flow rate, and it does not change when an elbow connects the hose to the nozzle. A forward force must… 
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References

SHOWING 1-10 OF 37 REFERENCES
Development of a Flow Modifier for Reducing the Reaction Force of Firefighting Nozzles
Abstract : The purpose of this study was to develop a device that can be inserted upstream of conventional water firefighting nozzles in order to reduct their reaction force. The device was intended
A Quantitative Approach to Selecting Nozzle Flow Rate and Stream, Part 2
Even the smallest flow rate nozzle, regardless of stream type, if operated long enough, can suppress any fire in a confined compartment. However, when the lives of trapped occupants or firefighters
Backward Reaction Force on a Fire Hose, Myth or Reality?
The reader may have noticed a backward force when using a hose, if not, searching the internet for ‘‘fire hose car lift’’ or ‘‘flyboard’’ provides videos of a car or a man suspended in the air by the
Fluid Mechanics
Ludwig Krinner (Dated: November 5th 2012) Abstract This is a script made with the help of Landau Lifshitz, Book VI [1] on fluid mechanics, that gives a short introduction to basic fluid mechanics.
Engineering fluid mechanics
PREFACE. CHAPTER 1 Introduction. 1.1 Liquids and Gases. 1.2 The Continuum Assumption. 1.3 Dimensions, Units, and Resources. 1.4 Topics in Dimensional Analysis. 1.5 Engineering Analysis. 1.6
Principles of fluid mechanics
1. Introduction and Basic Definitions. 2. Conservation Laws for Closed Systems. 3. Conservation Laws for Open Systems. 4. Differential View of Fluid Motion: Fluid Kinematics. 5. Differential Form of
Introduction to Fluid Mechanics
  • J. Fay
  • Engineering, Physics
  • 1994
Fluid statics conservation of mass inviscid flow conservation of momentum laminar viscous flow turbulent viscous flow conservation of energy flow in fluid systems dimensional analysis and modelling
Mechanics of Fluids
Part 1 Basic principles of fluid mechanics: fundamental notions stress at point fluid statics foundations of flow analysis basic laws for finite sysems and finite control continuity and momentum
Prandtl's essentials of fluid mechanics
Introduction.- Properties of Liquids and Gases.- Kinematics of Liquids and Gases.- Dynamics of Liquids and Gases.- Fundamental Equations of Fluid Mechanics.- Aerodynamics.- Turbulent Flows.- Fluid
...
1
2
3
4
...