APPLICATION OF THE SUBMERGED JET THEORY TO CALCULATION OF WATER CURTAIN PARAMETERS

This work represents further development of earlier received results of mathematical simulation of water curtains used as fire protection walls. The central objective of the study is to develop calculation method of some major parameters of this mathematical model. These are such parameters: velocities of droplets moving, their concentration in space, thickness of sediment water layer. Earlier there was no such calculation procedure, and determination of these parameters was made by means of the difficult experimental measurements. In this study the submerged jet theory is applied for calculation of these parameters. Subject of the theoretical analysis is the fan sprayed water jet which flow from the slot-hole sprinkler. The formulae received in the work allow to carry out calculation of called parameters on the basis of design characteristics of drencher installation. The graphic dependences constructed on the formulae have allowed to define spatial distributions of these parameters. Application of these formulae to earlier developed mathematical model of thermal shielding has allowed to expand its opportunities for practical use. This model can be used for designing of water curtains of fire-prevention appointment, and also for definition of optimum modes of their operation.