scholarly journals Studi Kecepatan Aliran Air dengan Menggunakan Tabung Pitot

2018 ◽  
Vol 5 (1) ◽  
pp. 14
Author(s):  
Muhammad Taufik Iqbal ◽  
Zulvyah Faisal
Keyword(s):  
Flow Velocity ◽  
Water Flow ◽  
Flow Rate ◽  
Open Channel ◽  
Flow Analysis ◽  
Distribution Channel ◽  
Research Process ◽  
Flow Speed ◽  
Water Flow Velocity ◽  
Speed Distribution

The tools and methods used in the measurement of water flow velocity are now very diverse, such as by using Venturi Meter, Orifice, Current Meter, Pitot Tube, and so forth. To learn more about water flow velocity measurement method, in order to improve professionalism in the field of water resources can be done research at Hydraulics Laboratory by researching Water Flow Analysis by Using Pitot Tubes. The research process will be carried out using three varied channel basis samples: reviewing the velocity of the water flow at the bottom of the channel with slippery base, reviewing the flow rate of the water on the gravel base channel, and reviewing the flow rate of the water on the channel with the decking concrete base. The expected result of this research is knowing the distribution of velocity in a cross section such as drainage channel, irrigation channel and river, so construction of water structure can be adjusted position placement in the open channel section. In addition it can be used as a reference in planning an open channel. One of the benefits to construction cofferdam construction speed distribution is to determine the dewatering system to be carried out during construction.Keywords— Flow Speed, Speed Distribution. Channel Basic Variations

scholarly journals Study on the Motion Characteristics of Residual Air Mass in Pipelines in Water Transfer Project

2018 ◽  
Vol 246 ◽  
pp. 01113
Author(s):  
Huang Haocheng ◽  
Jiang Jin ◽  
Chen Qi ◽  
Liao Zhifang ◽  
Liu Laiquan
Keyword(s):  
Flow Velocity ◽  
Water Flow ◽  
Flow Rate ◽  
Water Flow Rate ◽  
Water Transfer ◽  
Long Distance ◽  
Water Flow Velocity ◽  
Air Mass ◽  
Motion Characteristics ◽  
Residual Air

For long-distance water transfer projects, the residual air mass in the pipeline will not only reduce the efficiency, but also be detrimental to the safety of the system. In order to study the influence of the water flow velocity of the pressurized water pipeline and the pipeline angle of the hump on the motion characteristics of the residual air mass, an experimental platform with Particle Image Velocimetry (PIV) measuring system was constructed to analyse the flow field. The RSM turbulence model was combined with the VOF multiphase flow model to construct a local high-point gas-liquid two-phase fluid dynamics model for numerical simulation. The results showed that with the increase of water flow velocity, the local hump residual air mass would go through three states, namely, no bubble generation, air bubble was generated and partial discharged, and air mass discharge at one time. If the gas was greater than a certain volume, the increase in the water flow rate required to carry the air mass out of the hump at one time would slow down; the larger the local hump angle was, the greater the water flow rate was required to carry the gas out of the local hump part.

The Influence of Seawater Velocity to the Corrosion Rate and Paint Degradation at Mild Steel Plate Immersed in Sea Water

2014 ◽  
Vol 554 ◽  
pp. 218-221 ◽  
Author(s):  
Manuhutu Ferry ◽  
W.B. Wan Nik ◽  
Che Wan Mohd Noor
Keyword(s):  
Corrosion Rate ◽  
Mild Steel ◽  
Flow Velocity ◽  
Water Flow ◽  
Steel Plate ◽  
Sea Water ◽  
Electrochemical Impedance ◽  
Flow Speed ◽  
Plate Surface ◽  
Water Flow Velocity

Mild steel is one of the materials that used to build ships and other marine construction which go through current, streams, waves with different speed. The aim of this study is to investigate the effect of seawater flow speed on the corrosion rate of mild steel and the paint thickness degradation. The simulation is done at laboratory scale using mild steel coupons exposure under different flow velocity of seawater that are 2 m/s, 4 m/s, 6 m/s and as control is used stationary flow, 0 m/s. Electrochemical impedance spectroscopy is used to determine the corrosion rate occurred on the coupons plate surface and its paint degradation as function of immersion time. Scanning electron microscopy also is used to observe the plate surface rust and the damage of paint which occurred during the experiment. Experiment is run for thirty days for every water flow speed and the data is taken every ten days. The result of this study revealed that the corrosion rate and paint degradation are increased by the increasing of water flow velocity which is proposed to validate seawater flow rate as parameter that increased the paint damage and corrosion rate of mild steel plate.

The effects of changing water flow velocity on the formation of biofilms and water quality in pilot distribution system consisting of copper or polyethylene pipes

2006 ◽  
Vol 40 (11) ◽  
pp. 2151-2160 ◽  
Author(s):  
Markku J. Lehtola ◽  
Michaela Laxander ◽  
Ilkka T. Miettinen ◽  
Arja Hirvonen ◽  
Terttu Vartiainen ◽  
...  
Keyword(s):  
Water Quality ◽  
Flow Velocity ◽  
Water Flow ◽  
Distribution System ◽  
Water Flow Velocity ◽  
Polyethylene Pipes

Effect of slope gradient on the subsurface water flow velocity of sand layer profile

2020 ◽  
Vol 17 (3) ◽  
pp. 641-652 ◽  
Author(s):  
Zhen Han ◽  
Xiao-yan Chen ◽  
Yu-han Huang ◽  
Bang-lin Luo ◽  
Hang Xing ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Water Flow ◽  
Subsurface Water ◽  
Sand Layer ◽  
Slope Gradient ◽  
Water Flow Velocity

scholarly journals Water load pattern in a production hall

2018 ◽  
Vol 45 ◽  
pp. 00015 ◽  
Author(s):  
Edyta Dudkiewicz ◽  
Alina Żabnieńska-Góra
Keyword(s):  
Flow Velocity ◽  
Water Flow ◽  
Hot Water ◽  
Domestic Water ◽  
Water Flow Velocity ◽  
Water Load ◽  
Actual Volume ◽  
Load Pattern ◽  
And Gender ◽  
Selection Of

The actual volume of water consumption in the various industrial halls is very diverse. Many factors have an impact on that value, depending on the demand for: domestic, fire-fighting, technologically specific target and other purposes. The demand for domestic water in the production hall is primarily due to the use of showers, wash basins and flush toilets. Workplaces should be appropriately equipped with hygienic and sanitary facilities, depending on its degree of soiling, type of work and gender. The water flow is relevant for dimensioning the water supply system including the diameter selection of the water pipes. Criterion for selection of the diameter is the flow velocity of the water which varies depending on the manufacturer’s guidelines, the material used and the law. The article analyses the dynamics of load pattern of hot water in industrial halls. The methods of flow calculation in production halls based on an analysis of patterns available in literature and the water flow velocity criteria is discussed. The results of the research of the dynamics of water load pattern in a production hall located in Wroclaw is presented and discussed.

scholarly journals Application of a Volterra quadratic polynomial to modeling elements of heat engineering devices

2019 ◽  
Vol 114 ◽  
pp. 01007 ◽  
Author(s):  
Ekaterina Antipina ◽  
Vadim Spiryaev ◽  
Emir Tairov
Keyword(s):  
Power Series ◽  
Flow Velocity ◽  
Power Unit ◽  
Water Flow ◽  
Cooling Water ◽  
Steam Flow ◽  
Dynamic Processes ◽  
Water Flow Velocity ◽  
Temperature Changes ◽  
Extreme Problem

This paper considers integral models built to describe dynamic processes in a 135 MW power unit condenser. For this purpose, we use a quadratic segment of the Volterra integral power series. The first set of models was built with a perturbation of the cooling water flow, and the second one with a perturbation of the steam flow. For all sets of models, changes in pressure and temperature in the condenser, as well as temperature changes in LHP-1, were considered as a response to perturbation. For models built with perturbation of the cooling water flow velocity, we considered an extreme problem of finding optimal amplitudes of the input perturbations. The results of calculations proved to be sufficiently accurate.

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