Unsteady-Flow Velocity Measurements Around an Intake Valve of a Reciprocating Engine

1987 ◽  
Author(s):  
Sherif H. EI Tahry ◽  
Bahram Khalighi ◽  
William R. Kuziak
Keyword(s):  
Unsteady Flow ◽  
Flow Velocity ◽  
Intake Valve ◽  
Velocity Measurements ◽  
Reciprocating Engine

Experimental Study on the Piping Erosion Mechanism of Gap-Graded Soils Under a Supercritical Hydraulic Gradient

2021 ◽  
Author(s):  
Liang Chen ◽  
Yu Wan ◽  
Jian-Jian He ◽  
Chun-Mu Luo ◽  
Shu-fa Yan ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Unsteady Flow ◽  
Relative Density ◽  
Flow Velocity ◽  
Steady Flow ◽  
Fine Particle ◽  
Failure Process ◽  
Hydraulic Gradient ◽  
Particle Content ◽  
Piping Erosion

Abstract Seepage-induced piping erosion is observed in many geotechnical structures. This paper studies the piping mechanism of gap-graded soils during the whole piping erosion failure process under a supercritical hydraulic gradient. We define the supercritical ratio Ri and study the change in the parameters such as the flow velocity, hydraulic conductivity, and fine particle loss with Ri. Under steady flow, a formula for determining the flow velocity state of the sample with Ri according to the fine particle content and relative density of the sample was proposed; during the piping failure process, the influence of Rimax on the rate at which the flow velocity and hydraulic conductivity of the sample increase as Ri decreases was greater than that of the initial relative density and the initial fine particle content of the sample. Under unsteady flow, a larger initial relative density corresponds to a smaller amplitude of increase in the average value of the peak flow velocity with increasing Ri. Compared with the test under steady flow, the flow velocity under unsteady flow would experience abrupt changes. The relative position of the trend line L of the flow velocity varying with Ri under unsteady flow and the fixed peak water head height point A under steady flow were related to the relative density of the sample.

scholarly journals 2004 Indian Ocean tsunami flow velocity measurements from survivor videos

2006 ◽  
Vol 33 (24) ◽  
Author(s):  
Hermann M. Fritz ◽  
Jose C. Borrero ◽  
Costas E. Synolakis ◽  
Jeseon Yoo
Keyword(s):  
Indian Ocean ◽  
Flow Velocity ◽  
Indian Ocean Tsunami ◽  
Velocity Measurements ◽  
2004 Indian Ocean Tsunami

scholarly journals Reproducibility of blood flow velocity measurements using colour decoded Doppler imaging

Eye ◽  
2004 ◽  
Vol 18 (4) ◽  
pp. 400-405 ◽  
Author(s):  
E T Matthiessen ◽  
O Zeitz ◽  
G Richard ◽  
M Klemm
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Doppler Imaging ◽  
Velocity Measurements

scholarly journals High-repetition-rate interferometric Rayleigh scattering for flow-velocity measurements

2018 ◽  
Vol 124 (3) ◽  
Author(s):  
Jordi Estevadeordal ◽  
Naibo Jiang ◽  
Andrew D. Cutler ◽  
Josef J. Felver ◽  
Mikhail N. Slipchenko ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Repetition Rate ◽  
Rayleigh Scattering ◽  
High Repetition Rate ◽  
Velocity Measurements ◽  
High Repetition
Sign in / Sign up

Export Citation Format

Share Document