Experimental Study of Dynamic Effects of Iron Bacteria–Formed Biofilms on Pipeline Head Loss and Roughness

2019 ◽  
Vol 145 (9) ◽  
pp. 04019038 ◽  
Author(s):  
Jinzhe Gong ◽  
Mason Erkelens ◽  
Martin F. Lambert ◽  
Peter Forward
Keyword(s):  
Experimental Study ◽  
Head Loss ◽  
Dynamic Effects ◽  
Iron Bacteria

Experimental Study of Ion Dynamic Effects in Overlapping Helium Lines at Low Densities

1983 ◽  
Vol 38 (1) ◽  
pp. 37-46 ◽  
Author(s):  
A. Piel ◽  
H. Richter
Keyword(s):  
Experimental Study ◽  
High Purity ◽  
Line Shape ◽  
Plasma Source ◽  
Line Profiles ◽  
Dynamic Effects ◽  
Electron Densities ◽  
Plasma Parameters ◽  
Critical Comparison

Abstract The line profiles of the overlapping helium lines 447.1 nm and 492.2 nm have been investigated in an improved plasma source of high purity at electron densities of 1 × 1021 m−3 and 3 × 1021 m−3 . The plasma parameters Ne, Te and T0 were determined carefully by independent diagnostics, which enables a critical comparison with existing theories (BCS II and MMM). We observed ion dynamic effects which considerably modify the line shape of the forbidden components. Our experiments extend the existing observations towards higher ion temperatures. Systematic trends observed earlier are critically discussed.

scholarly journals An Experimental Study for Estimation of Head Loss Coefficients at Surcharged Circular Manhole

2008 ◽  
Vol 41 (3) ◽  
pp. 305-314 ◽  
Author(s):  
Jung-Soo Kim ◽  
Ju-Il Song ◽  
Suk-Jin Jang ◽  
Sei-Eui Yoon
Keyword(s):  
Experimental Study ◽  
Head Loss ◽  
Loss Coefficients

Experimental study of the impact of gas adsorption on coal and gas outburst dynamic effects

2019 ◽  
Vol 128 ◽  
pp. 158-166 ◽  
Author(s):  
Jie Cao ◽  
Linchao Dai ◽  
Haitao Sun ◽  
Bo Wang ◽  
Bo Zhao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gas Adsorption ◽  
Coal And Gas Outburst ◽  
Dynamic Effects ◽  
Gas Outburst ◽  
The Impact

Experimental study of dynamic effects in bubble boiling of liquids

1979 ◽  
Vol 37 (6) ◽  
pp. 1420-1423 ◽  
Author(s):  
V. M. Tokarev ◽  
A. A. Bogovin
Keyword(s):  
Experimental Study ◽  
Dynamic Effects

Hydraulic Experimental Study on Two Kinds of Nonmetallic Plastic Pipes

2012 ◽  
Vol 594-597 ◽  
pp. 2014-2017 ◽  
Author(s):  
Bao Jun Liu ◽  
Chen Guan ◽  
Zhi Chen Zong
Keyword(s):  
Experimental Study ◽  
Reynolds Number ◽  
Head Loss ◽  
Measured Data ◽  
Hydraulic Calculation ◽  
Flow Rates ◽  
Plastic Composite ◽  
Reinforced Plastic ◽  
Composite Pipe ◽  
Research Objects

Two kinds of nonmetallic pipes, steel skeleton polythene plastic composite pipe and reinforced plastic composite pipe, whose application effect in oilfield are preferable, were chosen as the research objects in this paper. An indoor experiment apparatus was established to measure the on-way resistance of this two kinds of pipes under different flow rates. Then many hydraulic calculation formulas were used to calculate the on-way head loss of tested pipes and the relation curves of pressure drop gradient on flow velocity and Reynolds Number were drawn. According to the comparison of calculated value and measured data, appropriate calculation formulas of on-way head loss for the two nonmetallic pipes were sorted out respectively. The result shows that as for steel skeleton polythene plastic composite pipe and reinforced plastic composite pipe, Panhandle A formula and Drew Et al Formula are recommended respectively to calculate the on-way hydraulic computation.

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