scholarly journals Liquid Jet Flow into Still Gas : 4th Report, Water Jet from Rough Circular Pipe

1969 ◽  
Vol 35 (270) ◽  
pp. 339-349
Author(s):  
Takeshi KUSUI
Keyword(s):  
Jet Flow ◽  
Water Jet ◽  
Circular Pipe ◽  
Liquid Jet

Study on Jet Flow Issuing From Pipe With Rotating Inclined Section

2003 ◽  
Author(s):  
Masahiro Nakashima ◽  
Hui Li ◽  
Takahide Tabata ◽  
Tsutomu Nozaki
Keyword(s):  
Image Processing ◽  
Flow Visualization ◽  
Jet Flow ◽  
Water Jet ◽  
Circular Pipe ◽  
Rotating Speed ◽  
Plane Normal ◽  
Inclined Angle

The water jet flow issuing from the rotating circular pipe with the inclined section has been studied by the method of the flow visualization and the image processing. The velocity distributions and the width of the jet have been measured in the cases of various inclined angles of the section and rotating speeds of the pipe. The effects of these variables on the jet diffusion have been clarified by measuring the jet width obtained from the superimposed images in the plane normal to the jet flow. As a result, it has been found that the jet diffusion is affected by the inclined angle and the rotating speed of the pipe. Furthermore, it has been clarified that there exists the rotating speed showing the effects of the rotating inclined section remarkably.

Simulation of the impinging liquid jet cooling process of a flat plate

2015 ◽  
Vol 25 (1) ◽  
pp. 153-170 ◽  
Author(s):  
Paul Stark ◽  
Udo Fritsching
Keyword(s):  
Heat Transfer ◽  
Flow Field ◽  
Flat Plate ◽  
Local Heat Transfer ◽  
Jet Flow ◽  
Water Jet ◽  
Direct Result ◽  
Liquid Jet ◽  
Cooling Process ◽  
Content Type

Purpose – The purpose of this paper is to develop a numerical model to simulate the flow field as well as the conjugate heat transfer during unsteady cooling of a flat plate with a single submerged water jet. At wall temperatures above the liquid boiling point, the vapor formation process and the interaction of the vapor phase with the developing jet-flow field are included. Design/methodology/approach – The time-dependent flow and temperature distribution during all occurring boiling phases as well as the local and temporal distribution of the heat transfer coefficient on a flat plate can be simulated. Findings – The influence of the liquid jet flow rate (10,800=Re_d=32,400) and the nozzle distance to the plate (4=H/d=20) on the transient cooling process are analyzed. This includes the time-dependant positions of the transition regions between the boiling phases on the plate as well as the temperatures at these transition regions. Additionally, the local heat transfer rates are a direct result of the unsteady cooling simulation. Originality/value – A single model approach is developed and utilized to simulate the unsteady cooling process of a flat plate with an impinging water jet including all occurring boiling phases.

PULSE RADIOGRAPHY INVESTIGATION OF LIQUID JET FLOW STRUCTURE IN A NONTRANSPARENT MEDIUM

1993 ◽  
Vol 1 (1) ◽  
pp. 69-73
Author(s):  
V. L. Ovsiannikov ◽  
A. R. Berngardt ◽  
E. I. Pal'chikov
Keyword(s):  
Flow Structure ◽  
Jet Flow ◽  
Liquid Jet

Chemical effects induced by gas–liquid jet flow

2022 ◽  
Author(s):  
Zhiliang Zhang ◽  
Jiaqi Lu ◽  
Bingqian Lv ◽  
Wei Liu ◽  
Shuyuan Shen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Jet Flow ◽  
Reaction Process ◽  
Liquid Jet ◽  
First Order ◽  
First Order Kinetics ◽  
Chemical Effects ◽  
Pseudo First Order

The gas-liquid jet flow was proved to be capable of inducing chemical consequences which can lead to the decomposition of methylene blue (MB). The reaction process follows a pseudo-first-order kinetics....

Research into a New Method for Trimming Hooves by Liquid Jet

2016 ◽  
Vol 832 ◽  
pp. 177-183
Author(s):  
Viliam Čačko ◽  
Juraj Ondruška ◽  
Iveta Onderová ◽  
Ľubomír Šooš ◽  
Zdenko Krajný
Keyword(s):  
Beef Cattle ◽  
Liquid Water ◽  
Water Jet ◽  
New Method ◽  
Liquid Jet ◽  
Original Research ◽  
Basic Parameters ◽  
Design And Testing ◽  
Modern Technologies ◽  
Initial Research

The contribution deals with the trimming of beef cattle hooves by means of a new method, specifically with a liquid water jet. Present methods of trimming hooves are outdated; almost nowhere are new modern technologies used for this purpose. The use of more contemporary methods would enable a reduction in the high labour demands to accomplish this task. But the main advantage of this new method is increasing so-called animal WELFARE. Present-day methods which are performed mechanically are always stressful, and many times also painful, for the animal. In the article we will specifically focus on the possibility of trimming the hooves of beef cattle by means of a water jet. The original research was focused on the size of the basic parameters such as pressure, flow, nozzle diameter and cutting time. The results of this initial research serve as a step towards further research, whose goal will be the design and testing of complex equipment for trimming beef cattle hooves by cutting with a liquid water jet.

scholarly journals Behavior of Water Jet Horizontally Discharged from a Small Circular Hole Set on a Circular Pipe-Surface into Air.

2001 ◽  
Vol 67 (656) ◽  
pp. 882-888
Author(s):  
Koji TSUYUKI ◽  
Saburo IGARASHI ◽  
Seiichi SUDO ◽  
Akira KIKUCHI ◽  
Masahiro YAMABE ◽  
...  
Keyword(s):  
Circular Hole ◽  
Water Jet ◽  
Circular Pipe ◽  
Pipe Surface

scholarly journals Jet flow of polyacrylamide solution from a circular pipe.

1984 ◽  
Vol 10 (6) ◽  
pp. 675-680
Author(s):  
Kohei Ogawa ◽  
Chiaki Kuroda ◽  
Ichiro Inoue
Keyword(s):  
Jet Flow ◽  
Circular Pipe ◽  
Polyacrylamide Solution

Study on Stability of Liquid Jet for Liquid Lithium Target of Boron Neutron Capture Therapy (BNCT)

2016 ◽  
Author(s):  
Yuki Maehara ◽  
Masatoshi Kondo ◽  
Minoru Takahashi
Keyword(s):  
Boron Neutron Capture Therapy ◽  
Neutron Capture ◽  
Jet Flow ◽  
Water Jet ◽  
Liquid Lithium ◽  
Neutron Capture Therapy ◽  
Nozzle Outlet ◽  
Boron Neutron Capture ◽  
Surface Disturbance ◽  
The Stability

For the development of the liquid lithium (Li) jet target system for the boron neutron capture therapy (BNCT), the stability of the Li jet is important. The purpose of the present study is to investigate the characteristics of the disturbances and the droplet formation of a water jet flow at high velocity. The experimental studies for a water jet flow were performed to simulate the liquid Li jet flow. The nozzles in the experiment had a rectangular flow channel with the gap of 0.5 mm and the length of 10 mm and 70 mm. The water flow velocities in these nozzles were 5 m/s, 10 m/s or 15 m/s. The stability of the water jet flow was investigated by the observation of the surface disturbance using a high speed video camera. The formation of water droplet from the water jet flow was detected, and the characteristics of the droplet formation were analyzed using Phase Doppler Anemometry (PDA). Then, the surface disturbance of the jet flow was characterized by the characteristics of the droplet generation. In the experiment with 10mm length of nozzle, a lot of droplets are generated from the jet surface and the surface is considered to be unstable. On the other hand the smooth jet surface and the stable jet are made near nozzle outlet. In the experiment with 70mm length of nozzle, few droplets are generated from the surface of the jet and the surface of the jet is very smooth especially for the place near nozzle outlet. It was concluded that the droplet generation from the surface of the water jet was promoted by the distortion of the jet surface. Also the surfaces of the jet flow made by the nozzle having the length of 70 mm was smoother than those in the tests with the nozzle having the length of 10 mm. The large eddy in the flow must be dumped before the nozzle outlet because the turbulence was fully developed in the nozzle.

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