Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle

D. Werner; C.R.K. Windows-Yule; Tz. Kokalova-Wheldon; J.P.K. Seville

doi:10.1016/j.mechrescom.2023.104180

Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle

D. Werner, C.R.K. Windows-Yule^*, Tz. Kokalova-Wheldon, J.P.K. Seville

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper we apply, for the first time, positron emission particle tracking (PEPT) to a fluidised bed in which gas is injected through a nozzle-type distributor. The detailed, three-dimensional data obtained provide direct insight into how the angle of the orifices through which gas is injected affects the fluidisation, mixing, and flow patterns observed within the bed. Our results show that the fastest and most consistent recirculation of material – an indicator of good mixing – as well as the most complete fluidisation may be achieved by using a nozzle with horizontal- or near-horizontal outlets.

Original language	English
Article number	104180
Journal	Mechanics Research Communications
Volume	132
Early online date	24 Jul 2023
DOIs	https://doi.org/10.1016/j.mechrescom.2023.104180
Publication status	Published - 1 Oct 2023

Keywords

Fluidised bed
Positron emission particle tracking
Nozzle
PEPT
Mixing

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10.1016/j.mechrescom.2023.104180Licence: Creative Commons: Attribution (CC BY)

WernerD2023InfluenceFinal published version, 1.9 MBLicence: Creative Commons: Attribution (CC BY)

https://linkinghub.elsevier.com/retrieve/pii/S0093641323001398

Advanced Imaging and Numerical Modelling of Segregation and Transport of Plastics in Fluidised Beds: Toward a Circular Economy for Plastics
Windows-Yule, C.
Engineering & Physical Science Research Council
1/02/21 → 30/04/23
Project: Research Councils
Novel Positron Imaging and Euler-Lagrange Modelling of Plastic Recycling Systems
Windows-Yule, C.
Royal Academy of Engineering
1/01/21 → 31/12/22
Project: Research
Positron Imaging of a Novel Plastic-Recycling System
Windows-Yule, C.
The Royal Society
31/03/20 → 30/03/22
Project: Research Councils
KTP - Recycling Technologies Ltd
Leeke, G., Windows-Yule, C. & Seville, J.
Recycling Technologies Ltd, TECHNOLOGY STRATEGY BOARD
4/11/19 → 3/11/21
Project: Research

Cite this

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title = "Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle",

abstract = "In this paper we apply, for the first time, positron emission particle tracking (PEPT) to a fluidised bed in which gas is injected through a nozzle-type distributor. The detailed, three-dimensional data obtained provide direct insight into how the angle of the orifices through which gas is injected affects the fluidisation, mixing, and flow patterns observed within the bed. Our results show that the fastest and most consistent recirculation of material – an indicator of good mixing – as well as the most complete fluidisation may be achieved by using a nozzle with horizontal- or near-horizontal outlets.",

keywords = "Fluidised bed, Positron emission particle tracking, Nozzle, PEPT, Mixing",

author = "D. Werner and C.R.K. Windows-Yule and Tz. Kokalova-Wheldon and J.P.K. Seville",

year = "2023",

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doi = "10.1016/j.mechrescom.2023.104180",

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journal = "Mechanics Research Communications",

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T1 - Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle

AU - Werner, D.

AU - Windows-Yule, C.R.K.

AU - Kokalova-Wheldon, Tz.

AU - Seville, J.P.K.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - In this paper we apply, for the first time, positron emission particle tracking (PEPT) to a fluidised bed in which gas is injected through a nozzle-type distributor. The detailed, three-dimensional data obtained provide direct insight into how the angle of the orifices through which gas is injected affects the fluidisation, mixing, and flow patterns observed within the bed. Our results show that the fastest and most consistent recirculation of material – an indicator of good mixing – as well as the most complete fluidisation may be achieved by using a nozzle with horizontal- or near-horizontal outlets.

AB - In this paper we apply, for the first time, positron emission particle tracking (PEPT) to a fluidised bed in which gas is injected through a nozzle-type distributor. The detailed, three-dimensional data obtained provide direct insight into how the angle of the orifices through which gas is injected affects the fluidisation, mixing, and flow patterns observed within the bed. Our results show that the fastest and most consistent recirculation of material – an indicator of good mixing – as well as the most complete fluidisation may be achieved by using a nozzle with horizontal- or near-horizontal outlets.

KW - Fluidised bed

KW - Positron emission particle tracking

KW - Nozzle

KW - PEPT

KW - Mixing

U2 - 10.1016/j.mechrescom.2023.104180

DO - 10.1016/j.mechrescom.2023.104180

M3 - Article

SN - 0093-6413

VL - 132

JO - Mechanics Research Communications

JF - Mechanics Research Communications

M1 - 104180

ER -

Influence of nozzle design on flow, mixing, and fluidisation in a bubbling bed fluidised by a single nozzle

Abstract

Keywords

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Projects

Advanced Imaging and Numerical Modelling of Segregation and Transport of Plastics in Fluidised Beds: Toward a Circular Economy for Plastics

Novel Positron Imaging and Euler-Lagrange Modelling of Plastic Recycling Systems

Positron Imaging of a Novel Plastic-Recycling System

KTP - Recycling Technologies Ltd

Cite this