Flow conditioning—A new development

Laws, E.M.

doi:10.1016/0955-5986(90)90006-s

Cited by 36 publications

(11 citation statements)

References 2 publications

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“…The nature of flow inside the pipe without an entrance insert was determined to focus on laminar flow control with the flow conditioners. In this respect the characteristics of a perforated plate [3,13], a tube bundle [14,15] and an etoile [12] produced in conformity with ISO 5167 and experimental test cases covering Re range of 547 ≤ Re ≤ 9000 are given in Table 1. The flow conditioners were placed at 10D downstream of the MFC unit.…”

Section: Experimental Set-up Measurements and Methodology Utilizedmentioning

confidence: 99%

Laminar flow control via utilization of pipe entrance inserts (a comment on entrance length concept)

Çarpınlıoǧlu

Özahi

2011

Flow Measurement and Instrumentation

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Section: Experimental Set-up Measurements and Methodology Utilizedmentioning

confidence: 99%

Laminar flow control via utilization of pipe entrance inserts (a comment on entrance length concept)

Çarpınlıoǧlu

Özahi

2011

Flow Measurement and Instrumentation

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“…Technical data of the 2D-DPIV system adjustable to measure the influence of asymmetrical flow effects. In the intake of the shroud pipe a perforated flow rectifier according to Laws [14] is inserted, which reduces the swirl of the flow and thus provides a nearly symmetrical flow pattern in the tundish cross-sections. The geometric data are given in table 3, the fluidic data are given in Table 3.…”

Section: Dpiv Table 2 Is a Methods To Record Timedependent Velocity mentioning

confidence: 99%

Mechanism of fluid flow in a continuous casting tundish with different turbo‐stoppers

et al. 2001

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The fluid flow in a continuous casting tundish affects the separation of non‐metallic particles and the cleanliness of the steel. Today, laser‐optical investigations of water models are state of the art and enable detailed information about the effect of baffles, i. e. dams, weirs and turbo‐stoppers, on the flow. In this work 3D‐LDA and 2D‐DPIV‐investigations for different turbo‐stoppers in a water model on a scale of 1:1.7 of a 16 t single strand tundish are presented. Three circular turbo‐stoppers are investigated. Detailed measurements of the mean velocity and turbulence intensity in the tundish with and without turbo‐stopper are shown. With a suitable turbo‐stopper geometry the recirculation area in the tundish centre and short‐circuit flows along the side walls can be avoided and thus more favourable residence time distributions can be obtained. It is shown that the turbo‐stopper produces higher turbulence in the inlet region of the tundish, which is spatially more limited, however, in relation to the flow without turbo‐stopper. Thereby a more homogeneous flow is created at the discharge of the tundish with better conditions for the particle separation. The experimental data yield a good understanding of the flow phenomena in a tundish with turbo‐stopper and are used as validating criterion for numerical simulations (Fluent 5.5) on the basis of the Reynolds equations. The turbulence modelling is based on a two‐equation model (realizable k‐ε model).

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“…The standard k-e model is often used for isotropic uniform turbulent flow, such as circular pipe. It obtains the solution of k and e by solving the k-e two-equation model, [22][23][24][25] then calculates the turbulent viscosity using the solutions of k and e, and finally obtains the solution of the Reynolds stress by the Boussinesq assumption. In 1972, Launder and Spalding introduced a turbulent dissipative rate e equation based on the turbulent kinetic energy k equation and developed the k-e twoequation model, as described below:…”

Section: Mathematic Modelmentioning

confidence: 99%

Performance optimization of ultrasonic flow meter based on computational fluid dynamics

Peng

Liao

Tan

2018

Advances in Mechanical Engineering

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As a common nature gas measuring tool, ultrasonic flow meter is more and more put into use. Therefore, the accuracy of measurement is what we concern the most. The performance of ultrasonic flow meter is closely related to fluid state which flows through it. This article identified the evaluation method of rectification effect of gasotron and its implementation steps. It proposed an assessing index L min based on dichotomy. Computational fluid dynamics method is used to simulate the model of an upstream straight pipe section with a header and plate gasotron, which obtained the assessing index L min in five different transmission conditions. Finally, the feasibility of the gasotron is validated against comparing indication errors in different installation conditions: with a header, benchmark, with a header and gasotron.

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Flow conditioning—A new development

Cited by 36 publications

References 2 publications

Laminar flow control via utilization of pipe entrance inserts (a comment on entrance length concept)

Laminar flow control via utilization of pipe entrance inserts (a comment on entrance length concept)

Mechanism of fluid flow in a continuous casting tundish with different turbo‐stoppers

Performance optimization of ultrasonic flow meter based on computational fluid dynamics

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