Calculation Accuracy of Pulsating Flow through the Turbine of SI-engine Turbochargers - Part 2 Measurements, Simulation Correlations and Conclusions

2005 ◽  
Author(s):  
Fredrik Westin ◽  
Hans-Erik Ångström
Keyword(s):  
Pulsating Flow ◽  
Si Engine ◽  
Flow Through

Machine Learning Application for Pulsating Flow Through Aluminum Block

2020 ◽  
pp. 189-201
Author(s):  
Somvir Singh Nain ◽  
Rajeev Rathi ◽  
B. Srinivasa Varma ◽  
Ravi Kumar Panthangi ◽  
Amit Kumar
Keyword(s):  
Machine Learning ◽  
Pulsating Flow ◽  
Aluminum Block ◽  
Flow Through

An Investigation of Resonance Conditions for Pulsating Flow of Air through an Orifice in a Pipe

1973 ◽  
Vol 6 (1) ◽  
pp. 41-46
Author(s):  
B W Imrie ◽  
R A Evans†
Keyword(s):  
Acoustic Waves ◽  
Gas Flow ◽  
Pulsating Flow ◽  
Dimensional Parameter ◽  
Inertia Effects ◽  
Diameter Pipe ◽  
Dependent Variables ◽  
Mass Flow Rates ◽  
Flow Through ◽  
Variable Analysis

A review of some previous studies of pulsating air flow through orifices in pipes is presented. In particular, the authors comment on the significance of inertia effects, the use of Strouhal number as a non-dimensional parameter, and the effect of phase change on time-dependent variables. Attention is drawn to the possible importance of the previously neglected interaction between the effects of orifices as acoustical filters and as meters of pulsating flow. Using complex variable analysis, a theoretical model based on plane acoustic waves yields, for resonance conditions, relationships between frequency, pressure and geometry variables. These were investigated experimentally for a 1-in diameter pipe with different orifice diameters for a range of frequencies up to 180 Hz. The results indicate that accurate derivation of mass flow rates from pressure measurements across an orifice in a pipe depends on taking into account the effects of wave action at all frequencies. This would avoid the rig-dependent limitations to which experimental work on pulsating gas flow through an orifice in a pipe is subject.

Distribution of Mass Transfer Rate and Wall Shear Stress Behind Simple Rectangular Stenosis in Pulsating Flow

1989 ◽  
Vol 111 (1) ◽  
pp. 47-54 ◽  
Author(s):  
R. Yamaguchi
Keyword(s):  
Mass Transfer ◽  
Shear Stress ◽  
Wall Shear Stress ◽  
Transfer Rate ◽  
Schmidt Number ◽  
Fluid Dynamic ◽  
Mass Transfer Rate ◽  
Pulsating Flow ◽  
Flow Through ◽  
Wall Shear

The distributions of mass transfer rate and wall shear stress in sinusoidal laminar pulsating flow through a two-dimensional asymmetric stenosed channel have been studied experimentally and numerically. The distributions are measured by the electrochemical method. The measurement is conducted at a Reynolds number of about 150, a Schmidt number of about 1000, a nondimensional pulsating frequency of 3.40, and a nondimensional flow amplitude of 0.3. It is suggested that the deterioration of an arterial wall distal to stenosis may be greatly enhanced by fluid dynamic effects.

On the dispersion of a solute in pulsating flow through a tube

1960 ◽  
Vol 259 (1298) ◽  
pp. 370-376 ◽  
Keyword(s):  
Diffusion Coefficient ◽  
Pressure Gradient ◽  
Circular Tube ◽  
Dispersion Coefficient ◽  
Pulsating Flow ◽  
Periodic Flow ◽  
Pressure Pulsations ◽  
Effective Dispersion ◽  
Mean Pressure ◽  
Flow Through

The effective dispersion coefficient of a solute in pulsating flow through a circular tube is here found. The case of a viscous flow under a pulsating pressure gradient is treated in detail and it is found that the Taylor diffusion coefficient contains terms proportional to the square of the amplitude of the pressure pulsations. However, the coefficients of these terms tend rapidly to zero, and the effect of pulsation will rarely contribute a fraction of more than 1/128 (the ratio of the amplitude of pressure gradient pulsation to mean pressure gradient) 2 to the total dispersion coefficient. The methods may be applied to diffusion in any periodic flow.

914 Velocity and Turbulence Intensity in a Pulsating Flow through a Bend

2014 ◽  
Vol 2014.89 (0) ◽  
pp. _9-13_
Author(s):  
Takuroh SENOO ◽  
Masaru SUMIDA ◽  
Junki YAMAMOTO
Keyword(s):  
Turbulence Intensity ◽  
Pulsating Flow ◽  
Flow Through
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