A numerical Investigation of the Flow in Water Jet Nozules

Bilir, Ahmet Çağrı; Doğrul, Ali; Cosgun, Taner; Yurtseven, Ahmet; Vardar, Nurten

doi:10.18186/jte.55087

Cited by 4 publications

(3 citation statements)

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“…Moreover, the analysis also showed that presence of a ring significantly increases mean velocity at the exit and increased inlet pressure is required to move the fluid through the nozzle. These results are consistent with one of the previous studies conducted by Bilir et al [27], who showed that narrow outlet section in all nozzle types helps velocity to reach at its maximum value.…”

supporting

confidence: 93%

Optimizing the velocity of ring shape parameter for designing the nozzles using CFD

Younis¹,

Ahmed²,

Mohammed³

et al. 2021

J Appl Eng Science

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This study aims to optimize the velocity of ring shape parameter for designing the nozzles using computational fluid dynamics (CFD) and investigated the flow in nozzles using ANSYS, Inc. simulation software. The model geometries were defined using ANSYS FLUENT-Design Modeler platform. All nozzles were designed on unstructured triangular elements comprising of 1200000 mesh nodes. The differential governing equations were applied in ANSYS FLUENT based on a finite volume method. The distance and dimensions of ring location significantly influence the velocity of water during flow where the maximum velocity at double rings reduces the surface area at distance of 7mm and 15mm and 2x2 mm dimensions. Considering 8, 10, and 12 bar liner proportions, there was an increase in the velocity at maximum points in ring shapes.

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supporting

confidence: 93%

Optimizing the velocity of ring shape parameter for designing the nozzles using CFD

Younis¹,

Ahmed²,

Mohammed³

et al. 2021

J Appl Eng Science

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“…There are many types of nozzle geometries such as Pelton, reverse Pelton, Convex type, concave type and conical nozzle with different angles. Bilir et al [22] designed five different types of fi-fi monitor nozzle with the same outlet diameter and conducted numerical analyses. They compared the reaction force in addition to velocity and pressure.…”

Section: Design Methodologymentioning

confidence: 99%

An Extensive Investigation of Flow Conditioners Inside a Fi-Fi Monitor

Bilir

Doğrul

Vardar

2022

brod

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As it is known, to provide fire protection for any type of surface vessel, external fire-fighting (EFF) systems have been commonly used for decades as well as in coastal regions. These types of systems exist on several types of vessels such as fire-fighting ships, tugboats, supply vessels and naval vessels. Flow conditioners can be used in the EFF systems to provide better performance by regulating the flow inside the fi-fi monitor. In the present study, a fire-fighting (fi-fi) monitor was designed and different flow conditioners were implemented into the fi-fi monitor. A unique flow conditioner was designed in addition to the recommended ones by ISO 5167-3 in order to improve the performance of the flow conditioner in terms of head ratio and flow rate. A commercial computational fluid dynamics (CFD) solver was used to investigate the performance of the different flow conditioners. Before comparing the numerical results of different flow conditioners, the numerical model was validated with the experimental data and verified with appropriate methods. The results showed that the unique flow conditioner successfully regulates the streamlines and it has better performance than the recommended ones by ISO 5167-3 in terms of flow rate and head ratio. As the last part of the study, the effect of unique flow conditioner length was investigated and the best length was determined.

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“…The combination of nozzles with different engineer-ing applications is used to generate sprays and jets [5]. They are also widely used as aviation systems, maritime systems, automotive systems, and industrial systems as single equipment or part of equipment [6]. The effect of nozzles on flow characteristics in the spiral nozzle was investigated by Matsuo et al [7] using an annual slit.…”

Section: Introductionmentioning

confidence: 99%

Determining the effect of nozzle groove on the fluid flow through viscous 2D planar fluid

Younis¹,

Ahmed²,

Hamdan³

et al. 2021

J Appl Eng Science

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The study aims to determine the effect of nozzle groove on fluid flow through viscous 2D planar fluid. To fulfil the study’s aim, numerical method was adopted to introduce grooves of different dimensions from the nozzle exit. The study adopts SoldWork software was used to design nozzles and introduce groove shaped nozzles, each consisting of six different designs. The nozzle base model used in this study was similar to the one used in a previous study. The procedure was performed with different pressures (8, 10, and 12 bar) at the similar firefighting nozzle. The velocities contours were predicted based on the choice of nozzle section during the numerical stimulation. The results of present study demonstrated a new approach that can be used for increasing velocity at various types of modified nozzles through grooves at different pressures and locations. For grooves, dimensions 1×1 (mm) and location 15 mm at 8 bar, 10 bar and 12 bars showed no effect on velocity as it reduces velocity by increasing surface area. The velocity increases with increasing pressure in proportion relationship. This clearly explains that the groove has no effect on velocity as it increases due to increase in pressure. This is because the groove reduces the velocity by increasing surface area. The study concludes that use of groove increases velocity of water that further improves nozzles operation.

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A numerical Investigation of the Flow in Water Jet Nozules

Cited by 4 publications

References 0 publications

Optimizing the velocity of ring shape parameter for designing the nozzles using CFD

Optimizing the velocity of ring shape parameter for designing the nozzles using CFD

An Extensive Investigation of Flow Conditioners Inside a Fi-Fi Monitor

Determining the effect of nozzle groove on the fluid flow through viscous 2D planar fluid

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