Results 11 to 20 of about 474,823 (307)
Leakage-Flow Models for Screw Extruders. [PDF]
Polymers (Basel), 2021 Many theoretical analyses of extrusion ignore the effect of the flight clearance when predicting the pumping capability of a screw. This might be reasonable for conventional extruder screws with “normal” clearances but leads to errors when more advanced screw designs are considered. We present new leakage-flow models that allow the effect of the flight
Marschik C +4 more
europepmc +4 more sources
Numerical Analysis on Pipeline Leakage Characteristics for Incompressible Flow
Journal of Applied Fluid Mechanics, 2019 Systematic Computational Fluid Dynamics (CFD) simulations on incompressible water pipe flow with leakage were conducted in the present study. The aim is to provide the understanding of how different parameters, including the leakage pipe diameter, inlet ...
Z. Zeng, R. Luo
doaj +4 more sources
Rakenteiden Mekaniikka, 2023 The effect of wall leakage on the traditional duct flow equations based of the balance of mass, momentum and mechanical energy applied on a duct section is considered. Application of the momentum balance produces a Bernoulli equation type form, where the multiplier 1/2 in the dynamic pressure is however replaced by the value 1. Some relevant literature
Salonen, Eero-Matti, Holopainen, Rauno
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Retrograde Flow Cement Leakage during Kyphoplasty
Maedica - A Journal of Clinical Medicine, 2022 Objective: To report a rare event of a retrograde flow of cement leakage during balloon kyphoplasty and discuss the possible mechanism. Methods:We present a 55-year-old male patient, who underwent a 4-level balloon kyphoplasty for Langerhans histiocytosis that had spread to the spine.
Kalliopi, Alpantaki +3 more
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Measured Air Flow Leakage in Facemask Usage
International Journal of Environmental Research and Public Health, 2023 The importance of wearing a facemask during a pandemic has been widely discussed, and a number of studies have been undertaken to provide evidence of a reduced infectious virus dose because of wearing facemasks. Here, one aspect that has received little attention is the fraction of breathing flow that is not filtered because it passes as leak flow ...
Poul S. Larsen +2 more
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Journal of Pipeline Science and Engineering, 2022 Leakage detection technology is of vital importance to the safe operation and flow insurance of multiphase flow pipelines. This paper for the first time applies acoustic based leakage detection method to stratified flow pipelines and verifies the ...
Xuejie Li +6 more
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Influence of flow pattern on leakage acoustic signal of multiphase pipeline
You-qi chuyun, 2021 In order to solve the problem that it is difficult to apply the existing leakage detection mechanism of singlephase pipelines with no consideration to the influence of flow patterns to the multiphase pipelines, the theoretical study and test analysis ...
Yi WANG, Junfei LI, Baoqiang JI, Jian JI
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Effect of an Axially Offset Impeller on the Transient Physics of Asymmetric Flow in a Double-suction Centrifugal Fan [PDF]
Journal of Applied Fluid MechanicsThe impeller of a double-suction centrifugal fan may be subject to axial offset due to assembly or operational failure. The internal flow is asymmetric about the central disc and deteriorates the fan’s performance.
R. Liu, H. Yang, Y. Wei, W. Zhang
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Quantitative and Qualitative Analysis of Dynamic Cavernosographies in Erectile Dysfunction due to Venous Leakage [PDF]
, 1989 Of 521 patients with erectile dysfunction in whom a multidisciplinary approach was used, 145 (27.8%) showed venous leakage as (concomitant) etiology of the impotence in dynamic cavernosography.
Bookstein +16 more
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International Journal of Turbomachinery, Propulsion and Power, 2020 In the side-chambers of radial turbomachinery, which are rotor–stator cavities, complex flow patterns develop that contribute substantially to axial thrust on the shaft and frictional torque on the rotor.
Tilman Raphael Schröder +3 more
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