Special Issue "Flow-Based Optimization of Products or Devices"

A special issue of Fluids (ISSN 2311-5521).

Deadline for manuscript submissions: 30 November 2019.

Special Issue Editor

Guest Editor
Dr. Nils Tångefjord Basse

Toftehøj 23, Høruphav, 6470 Sydals, Denmark
Website | E-Mail
Interests: physics and engineering; modelling and simulation; diagnostics and signal processing

Special Issue Information

Dear Colleagues,

Flow-based optimization of products and devices is an immature field compared to corresponding optimization based on solid mechanics. However, it is an essential part of components with both internal and/or external flow. Examples of the quantities which can be optimized for flow include:

  • pressure drop
  • pressure transients
  • flow noise
  • turbulent mixing
  • heat transfer
  • energy/particle confinement in fusion plasmas
  • fluidic oscillators
  • rheology measurements
  • swirl
  • velocity profile symmetry
  • manifold distribution

Flow-based optimization can be achieved by e.g. coupling of computational fluid dynamics (CFD) and optimization software; both open-source and commercial options exist. We invite contributions applying CFD-only or coupled approaches. Model-based (1D) optimization is also within the scope of this special issue. The motivation for flow-based optimization can be to improve performance, reduced size/cost, extract additional information or a combination of these objectives. The outcome of the optimization may be geometries which are more suitable for additive manufacturing instead of traditional subtractive manufacturing. Both original research and review papers are welcome.

Dr. Nils Tångefjord Basse
Guest Editor

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 papers will be 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. Fluids is an international peer-reviewed open access quarterly 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 1000 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

  • flow-based optimization
  • internal and/or external flow
  • modelling and simulation
  • CFD
  • additive manufacturing

Published Papers (1 paper)

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Research

Open AccessArticle
Computational Optimization of Adaptive Hybrid Darrieus Turbine: Part 1
Received: 17 April 2019 / Revised: 10 May 2019 / Accepted: 16 May 2019 / Published: 17 May 2019
PDF Full-text (15622 KB) | HTML Full-text | XML Full-text
Abstract
Darrieus-type Vertical Axis Wind Turbines (VAWT) are promising for small scale decentralized power generation because of their unique advantages such as simple design, insensitive to wind direction, reliability, and ease of maintenance. Despite these positive aspects, poor self-starting capability and low efficiency in [...] Read more.
Darrieus-type Vertical Axis Wind Turbines (VAWT) are promising for small scale decentralized power generation because of their unique advantages such as simple design, insensitive to wind direction, reliability, and ease of maintenance. Despite these positive aspects, poor self-starting capability and low efficiency in weak and unsteady winds deteriorate further development. Adaptive Hybrid Darrieus Turbine (AHDT) was proposed by the author in the past study as a potential solution to enhance low wind speed characteristics. The objective of the current research is to optimize the parameters of AHDT. AHDT integrates a dynamically varying Savonius rotor with a Darrieus rotor. A fully detailed 2D numerical study employing Reynold-Averaged Navier Stokes (RANS) is carried out to investigate the impact of the Darrieus rotor diameter (DR) on the Savonius rotor (DT) with regard to hybrid turbine performance. The power coefficient of the Darrieus rotor is evaluated when the Savonius rotor is in the closed condition (cylinder) of various diameters. The influence of Reynolds number (Re) on the torque coefficient is examined. Power loss of 58.3% and 25% is reported for DR/DT ratio of 1.5 and 2 respectively for AHDT with solidity 0.5 at 9 m/s. The flow interaction between the Savonius rotor in closed configuration reveals the formation of von Karman vortices that interact with Darrieus blades resulting in flow detachment. An optimum diametrical ratio (DR/DT) of 3 is found to yield the maximum power coefficient of the Darrieus rotor. Full article
(This article belongs to the Special Issue Flow-Based Optimization of Products or Devices)
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