scholarly journals Experimental study on flow pattern in forebay pump station and rectification scheme

2021 ◽  
Vol 768 (1) ◽  
pp. 012014
Author(s):  
Xixi Li ◽  
Shengzhi Zhou ◽  
Gang Xu
Keyword(s):  
Experimental Study ◽  
Flow Pattern ◽  
Pump Station

Experimental study of high rate pond system treating piggery wastewater

1996 ◽  
Vol 34 (11) ◽  
pp. 125-132 ◽  
Author(s):  
Baozhen Wang ◽  
Wenyi Dong ◽  
Jinlan Zhang ◽  
Xiangdong Cao
Keyword(s):  
Experimental Study ◽  
Energy Consumption ◽  
Flow Pattern ◽  
Fish Farming ◽  
High Rate ◽  
Land Area ◽  
Piggery Wastewater ◽  
Hydraulic Flow ◽  
Pond System ◽  
Economic Analyses

The results of an experimental study conducted in a full-scale high rate pond system treating piggery wastewater at Jianfengshan Piggery, Panyu City, Guandong Province, are presented. The system consists of two advanced anaerobic ponds (AAP) in parallel, followed by an anaerobic transformation pond (ATP) and a five-cell algae-bacterial pond (ABP). The mechanism of the AAP is described and the hydraulic flow pattern analyzed. Fermentation pits (FP) built on the bottom performed very efficiently, operating like UASB in principle. A new concept of ATP is advanced, based on its ability to transform poorly degradable materials to more easily degradable ones. It was found in the study that the HRP system was more efficient, more reliable and saved 40% land area compared with a conventional pond system. Economic analyses of both the energy consumption and the benefit to the pond system of fish farming are also included in the paper.

scholarly journals Experimental Study of Pipes Extrusion Process by Using Method of Coordinate Grids

2018 ◽  
Vol 7 (3) ◽  
pp. 58
Author(s):  
Kosmatskiy Yaroslav Igorevich ◽  
Al-Khuzaie Ahmed Saleem Oleiwi ◽  
Al-Jumaili Mohammed Jasim Mohammed
Keyword(s):  
Experimental Study ◽  
Flow Pattern ◽  
Metal Flow ◽  
Extrusion Process ◽  
Deformable Material ◽  
Contact Surfaces ◽  
Pipe Extrusion

The paper presents the results of an experimental study of the pipe extrusion process using the method of coordinate grids. The estimation of influence of separate conditions of friction on the contact surfaces of the deformable material and the pressing tool on metal flow pattern. The calculation of the forming operation is made for extrusion process stages.

An Experimental Study on Air-Water Two-Phase Flow Patterns in Pebble Beds

2010 ◽  
Vol 132 (4) ◽  
Author(s):  
Bai Bofeng ◽  
Liu Maolong ◽  
Su Wang ◽  
Zhang Xiaojie
Keyword(s):  
Experimental Study ◽  
Flow Pattern ◽  
Test Section ◽  
Slug Flow ◽  
Annular Flow ◽  
Two Phase Flow ◽  
Flow Patterns ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Pattern Transition

An experimental study was conducted on the air-water two-phase flow patterns in the bed of rectangular cross sections containing spheres of regular distribution. Three kinds of glass spheres with different diameters (3 mm, 6 mm, and 8 mm) were used for the establishment of the test section. By means of visual observations of the two-phase flow through the test section, it was discovered that five different flow patterns occurred within the experimental parameter ranges, namely, bubbly flow, bubbly-slug flow, slug flow, slug-annular flow, and annular flow. A correlation for the bubble and slug diameter in the packed beds was proposed, which was an extended expression of the Tung/Dhir model, Jamialahmadi’s model, and Schmidt’s model. Three correlations were proposed to calculate the void friction of the flow pattern transition in bubble flow, slug flow, and annular flow based on the bubble model in the pore region. The experimental result showed that the modified Tung and Dhir model of the flow pattern transition was in better agreement with the experimental data compared with Tung and Dhir’s model.

An experimental study on the influence of fluid flow pattern on microbubble generation

2008 ◽  
Vol 72 (4) ◽  
pp. 233-240 ◽  
Author(s):  
N. M. Nouri ◽  
A. Sarreshtehdari ◽  
E. Maghsoudi ◽  
A. Moosaie
Keyword(s):  
Experimental Study ◽  
Fluid Flow ◽  
Flow Pattern

Experimental Study on Deposition Promotion and Erosion Control for Pit Collapse

2012 ◽  
Vol 204-208 ◽  
pp. 3022-3027
Author(s):  
Qiang Ying ◽  
Sheng Ying Yuan
Keyword(s):  
Experimental Study ◽  
Flow Pattern ◽  
Erosion Control ◽  
Comparative Experiment ◽  
Limited Effect ◽  
Generalized Model ◽  
Emergency Rescue ◽  
Topographic Data ◽  
Proper Distance ◽  
Velocity Reduction

Based on the actual measured topographic data of the pit collapse occurred at Sanjiangkou in Nanjing, a generalized model of pit collapse is established. With this model, the experimental study of flow pattern changes is made with the schemes of crow of a tree and tetrahedron-like penetrating frames. The study shows that the scheme with crow of tree play greater effect in pit velocity reduction, so it can be used in emergency rescue project. Although tetrahedron-like penetrating frames can also reduce velocity, but too crowded arrangement make limited effect in reducing velocity, therefore tetrahedron-like penetrating frames should keep proper distance while dumping into the pit collapse. Moreover, a comparative experiment is made on the effects between the singe project (only arranging the project in the slide pit) and the combined project (contains collapse entrance project and inside project). The study experiment shows that the combined project has no obvious better effect than the single project.

scholarly journals Enhancing flow pattern upstream of New Hafeer Pump Station

Water Science ◽  
2018 ◽  
Vol 32 (1) ◽  
pp. 16-31 ◽  
Author(s):  
Yasser M. Shawky
Keyword(s):  
Flow Pattern ◽  
Pump Station
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