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Movements in Electromagnetically Agitated Liquid Metal

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 April 2022) | Viewed by 2767

Special Issue Editors


E-Mail Website
Guest Editor
Paul Scherrer Institute, Research with Neutrons and Muons, CH-5232 Villigen PSI, Switzerland
Interests: general physics; neutron imaging; intelligent systems

E-Mail Website
Guest Editor
Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland
Interests: neutron imaging; materials science

Special Issue Information

Dear Colleagues,

Characteristics of metals, as well as their advantageous applications, increase in step with better alloys and manufacturing processes. Up to now, progress very much depended on a trial-and-error strategy dictated, in part, by limitations in mechanistic understanding and in-situ diagnostics, in particular, for metals in their liquid state. Continually, older methods are improved, and new ones become available to look inside liquid metals and, especially, influence and monitor inside movements. This applies, e.g., to solid or gaseous inclusions, solidification fronts and mixing in general. “Nothing is more practical than a good theory” applies also here: progress in diagnostics and progress with increasingly more detailed simulations are mutually promoting each other, leading to optimized processes for a plethora of applications, which are the main focus of this Special Issue.

Dr. Knud Thomsen
Dr. Pavel Trtik
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • liquid metal
  • magnetic agitation
  • diagnostics
  • simulations
  • process modeling
  • process optimization
  • neutrons
  • X-rays
  • NDT
  • thermal fields
  • mixing
  • separation
  • inclusions
  • solidification
  • foams
  • corrosion
  • “green applications”
  • energy- and recycling-relevant LM-technologies

Published Papers (1 paper)

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Research

40 pages, 17643 KiB  
Article
Resolving Gas Bubbles Ascending in Liquid Metal from Low-SNR Neutron Radiography Images
by Mihails Birjukovs, Pavel Trtik, Anders Kaestner, Jan Hovind, Martins Klevs, Dariusz Jakub Gawryluk, Knud Thomsen and Andris Jakovics
Appl. Sci. 2021, 11(20), 9710; https://doi.org/10.3390/app11209710 - 18 Oct 2021
Cited by 11 | Viewed by 2087
Abstract
We demonstrate a new image processing methodology for resolving gas bubbles travelling through liquid metal from dynamic neutron radiography images with an intrinsically low signal-to-noise ratio. Image pre-processing, denoising and bubble segmentation are described in detail, with practical recommendations. Experimental validation is presented—stationary [...] Read more.
We demonstrate a new image processing methodology for resolving gas bubbles travelling through liquid metal from dynamic neutron radiography images with an intrinsically low signal-to-noise ratio. Image pre-processing, denoising and bubble segmentation are described in detail, with practical recommendations. Experimental validation is presented—stationary and moving reference bodies with neutron-transparent cavities are radiographed with imaging conditions representative of the cases with bubbles in liquid metal. The new methods are applied to our experimental data from previous and recent imaging campaigns, and the performance of the methods proposed in this paper is compared against our previously achieved results. Significant improvements are observed as well as the capacity to reliably extract physically meaningful information from measurements performed under highly adverse imaging conditions. The showcased image processing solution and separate elements thereof are readily extendable beyond the present application, and have been made open-source. Full article
(This article belongs to the Special Issue Movements in Electromagnetically Agitated Liquid Metal)
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