UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Simulation of the Head-disk Interface Gap Using a Hybrid Multi-scale Method

John, B; Lockerby, DA; Patronis, A; Emerson, DR; (2018) Simulation of the Head-disk Interface Gap Using a Hybrid Multi-scale Method. Microfluidics and Nanofluidics , 22 , Article 106. 10.1007/s10404-018-2126-5. Green open access

[img]
Preview
Text
John2018_Article_SimulationOfTheHead-diskInterf.pdf - ["content_typename_Published version" not defined]

Download (2MB) | Preview

Abstract

We present a hybrid multi-scale method that provides a capability to capture the disparate scales associated with modelling flow in micro- and nano-devices. Our model extends the applicability of an internal-flow multi-scale method by providing a framework to couple the internal (small scale) flow regions to the external (large scale) flow regions. We demonstrate the application of both the original methodology and the new hybrid approach to model the flow field in the vicinity of the head-disk interface gap of a hard disk drive enclosure. The internal flow regions within the gap are modelled by an extended internal-flow multi-scale method that utilises a finite-difference scheme for non-uniform grids. Our proposed hybrid multi-scale method is then employed to couple the internal micro-flow region to the flow external to the gap, to capture entrance/exit effects. We also demonstrate the successful application of the method in capturing other localised phenomena (e.g. those due to localised wall heating).

Type: Article
Title: Simulation of the Head-disk Interface Gap Using a Hybrid Multi-scale Method
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10404-018-2126-5
Publisher version: https://doi.org/10.1007/s10404-018-2126-5
Language: English
Additional information: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Multiscale simulations, Direct simulation Monte Carlo, Hybrid methods, Head-disk interface gap, Scale separation
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/10058104
Downloads since deposit
7Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item