Comparison Research on Hydraulic Characteristics of Three Type’s Orifice Plate

Hydraulic characteristics of orifice plates with multiple triangular holes in hydrodynamic cavitation reactor were experimentally investigated by use of three dimensional particle image velocimetry (PIV), high speed photography, electronic multi-pressure scanivalve and pressure data acquisition system, and numerically simulated by CFD software Flow 3D in this paper. Effects of number, arrangement and ratio of holes on hydraulic characteristics of the orifice plates were considered. Effects of arrangement and ratio of holes and flow velocity ahead of plate on cavitation number and velocity profile were compared. Distribution of turbulent kinetic energy and similarity of velocity profile were analyzed. And characteristics of cavitating flow downstream of the orifice plate were photographically observed by high speed camera. Also, a comparison with flow characteristics of orifice plate with hybrid holes (circle, square and triangle) was made.

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Review on the Research of Orifice Plate Hydraulic Characteristics

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.590.101 ◽

2014 ◽

Vol 590 ◽

pp. 101-104

Author(s):

Jia Hong Wang ◽

Wan Zheng Ai

Keyword(s):

Energy Loss ◽

Orifice Plate ◽

Effective Energy ◽

Hydraulic Characteristics ◽

Energy Dissipater

Orifice plate energy dissipater, as a kind of effective energy dissipater with characteristics of economic, has become welcomed more and more by hydraulics researchers. Although many researches have been conducted on orifice plate’s hydraulic characteristics, there are many other issues, which are closely related with orifice plate’s energy loss and cavitations, needed to be solved. Some issues on orifice plate’s hydraulic characteristics have been put forward in this paper so as to strengthen research in this field.

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Comparison on hydraulic characteristics between orifice plate and plug

Journal of Shanghai Jiaotong University (Science) ◽

10.1007/s12204-014-1527-1 ◽

2014 ◽

Vol 19 (4) ◽

pp. 476-480 ◽

Cited By ~ 2

Author(s):

Wan-zheng Ai ◽

Jian-hua Wu

Keyword(s):

Orifice Plate ◽

Hydraulic Characteristics

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A new method of two-phase flow measurement by orifice plate differential pressure noise

International Journal of Multiphase Flow ◽

10.1016/s0301-9322(97)88252-3 ◽

1996 ◽

Vol 22 ◽

pp. 108

Author(s):

W Wang

Keyword(s):

Flow Measurement ◽

Two Phase Flow ◽

Differential Pressure ◽

Orifice Plate ◽

New Method ◽

Phase Flow ◽

Two Phase

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Pengaruh Penerapan Strategi Pemecahan Masalah dalam Pembelajaran Kooperatif Pendekatan Struktural Think Pair Share (TPS) Terhadap Hasil Belajar Matematika Siswa Kelas VIII SMP Negeri 14 Pekanbaru

Talenta Conference Series Science and Technology (ST) ◽

10.32734/st.v2i2.517 ◽

2019 ◽

Vol 2 (2) ◽

Author(s):

Atma Murni ◽

Rini Dian Anggraini ◽

Sakur

Keyword(s):

Problem Solving ◽

Cooperative Learning ◽

Research Design ◽

Mathematics Learning ◽

Learning Outcome ◽

Structural Approach ◽

Comparison Research ◽

And Mathematics ◽

Problem Solving Strategy ◽

Solving Strategy

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penerapan Strategi Pemecahan Masalah dalam pembelajaran kooperatif pendekatan struktural Think Pair Share (TPS) terhadap hasil belajar matematika siswa kelas VIII SMP Negeri 14 Pekanbaru. Penelitian ini menggunakan desain penelitian pra eksperimental menggunakan desain penelitian perbandingan kelompok statis. Instrumen pengumpulan data meliputi tes keterampilan mahematika awal dan tes hasil belajar matematika. Data dianalisis menggunakan uji t. Hasil penelitian ini menunjukkan bahwa terdapat pengaruh strategi pemecahan masalah dalam pembelajaran kooperatif pendekatan struktural Think Pair Share (TPS) terhadap hasil belajar matematika siswa kelas VIII SMP Negeri 14 Pekanbaru. The aim of this study was to know the influence of Problem Solving Strategy implementation in cooperative learning of structural approach Think Pair Share (TPS) to mathematics learning outcome of VIII class students of SMP Negeri 14 Pekanbaru. This study use pre experimental research design using The static group comparison research design. The instruments of data collection include early mahematics skills test and mathematics learning outcome test. Data were analyzed using t test. The result of this study showed that there is influence of problem solving strategy in cooperative learning of structural approach Think Pair Share (TPS) to mathematics learning outcome of VIII class students of SMP Negeri 14 Pekanbaru

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MODELING THE HYDRAULIC CHARACTERISTICS OF DRAIN VALVE AND BURST FITTING OF AN AIRCRAFT ACCIDENT-RESISTANT FUEL SYSTEM

Computational nanotechnology ◽

10.33693/2313-223x-2020-7-3-37-44 ◽

2020 ◽

Vol 7 (3) ◽

pp. 37-44

Author(s):

KONSTANTIN NAPREENKO ◽

◽

ROMAN SAVELEV ◽

ALEKSEY TROFIMOV ◽

ANNA LAMTYUGINA ◽

...

Keyword(s):

Mathematical Modeling ◽

Hydraulic Resistance ◽

Hydraulic Calculation ◽

Fuel System ◽

Hydraulic Characteristics ◽

System A ◽

Ansys Cfx ◽

Calculation Results ◽

Scale Experiment ◽

Aircraft Accident

The article discusses methods for determining the hydraulic resistance of units of an accident-resistant fuel system. A detailed description of the need to create such fuel systems for modern helicopters is given. The development of such systems today is impossible without the use of the method of mathematical modeling, which allows to qualitatively solve problems arising in the design process. To obtain accurate research results, it is necessary to have a complete description of all elements and assemblies of the system. Methods for determining the hydraulic characteristics of AFS elements using the drag coefficient, reference literature and CFD codes are considered. As the investigated AFS units, a drain valve and burst fitting were studied in the article. A hydraulic calculation of these AFS elements ware performed, the simulation results are presented in the ANSYS CFX software package. Also as the calculation results of bursting fitting, the pressure distribution fields of full and static pressure, velocity and streamlines are also shown. An experimental setup for validating the results obtained using the mathematical modeling method is considered, as well as a methodology for conducting a full-scale experiment to determine the hydraulic resistance of the unit. Materials have been prepared for inclusion in a one-dimensional mathematical model of an accident-resistant fuel system.

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