Stephen Longshaw

ORCID: 0000-0003-0420-613X
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About
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Research Areas
  • Fluid Dynamics Simulations and Interactions
  • Lattice Boltzmann Simulation Studies
  • Fluid Dynamics and Heat Transfer
  • Geological Modeling and Analysis
  • Fluid Dynamics and Vibration Analysis
  • Tropical and Extratropical Cyclones Research
  • Spacecraft and Cryogenic Technologies
  • Data Visualization and Analytics
  • Distributed and Parallel Computing Systems
  • Gas Dynamics and Kinetic Theory
  • Diamond and Carbon-based Materials Research
  • Combustion and Detonation Processes
  • Earthquake and Tsunami Effects
  • Computational Physics and Python Applications
  • Advanced Measurement and Metrology Techniques
  • Semantic Web and Ontologies
  • Modeling and Simulation Systems
  • Robotic Mechanisms and Dynamics
  • Simulation Techniques and Applications
  • Computer Graphics and Visualization Techniques
  • Contact Mechanics and Variational Inequalities
  • High-Velocity Impact and Material Behavior
  • Dynamics and Control of Mechanical Systems
  • Model-Driven Software Engineering Techniques
  • Fluid dynamics and aerodynamics studies

Science and Technology Facilities Council
2017-2023

Daresbury Laboratory
2017-2023

UK Research and Innovation
2020

University of Manchester
2014-2015

dsmcFoam+ is a direct simulation Monte Carlo (DSMC) solver for rarefied gas dynamics, implemented within the OpenFOAM software framework, and parallelised with MPI. It open-source released under GNU General Public License in publicly available repository that includes detailed documentation tutorial DSMC flow cases. This release of code many features not found standard dsmcFoam, such as molecular vibrational electronic energy modes, chemical reactions, subsonic pressure boundary conditions....

10.1016/j.cpc.2017.09.030 article EN cc-by Computer Physics Communications 2017-10-24

This paper introduces mdFoam+, which is an MPI parallelised molecular dynamics (MD) solver implemented entirely within the OpenFOAM software framework. It open-source and released under same GNU General Public License (GPL) as OpenFOAM. The source code a publicly open repository that includes detailed documentation tutorial cases. Since mdFoam+ designed C++ object-oriented framework, it inherits number of key features. for extensibility flexibility, so aimed first foremost MD research tool,...

10.1016/j.cpc.2017.09.029 article EN cc-by Computer Physics Communications 2017-10-23

A multiphase fluid-structure interaction (FSI) framework using open-source software has been developed, utilising components able to run on high-performance computing platforms.A partitioned approach is employed, ensuring a separation of concerns (fluid, structure, and coupling), allowing design flexibility robustness while reducing future maintenance effort.Multiphase FSI test cases have simulated compared with published results show good agreement.This demonstrates the ability this in...

10.17736/ijope.2022.jc844 article EN International Journal of Offshore and Polar Engineering 2022-03-01

A domain-decomposed method to simultaneously couple the classical Molecular Dynamics (MD) and Direct Simulation Monte Carlo (DSMC) methods is proposed. This approach utilises MPI-based general coupling library, Multiscale Universal Interface. The provides a direct strategy two OpenFOAM based solvers, mdFoam+ dsmcFoam+, enabling scenarios where both solvers assume one discrete particle equal molecule or atom. ultimate goal of this work enable complex multi-scale simulations involving micro,...

10.1016/j.compfluid.2020.104726 article EN cc-by Computers & Fluids 2020-09-18

Fluid-Structure Interaction (FSI) is a phenomenon that appears in wide range of scientific research and engineering applications at different spatial temporal scales. There are many in-house/commercial solvers capable modelling FSI, but high numerical robustness scalability codes still demand. In this study, framework for FSI simulations has been developed using partitioned approach aimed both good computational scalability. Open-source software used each component the coupled solution, with...

10.23967/wccm-eccomas.2020.272 article EN cc-by-nc-sa 14th WCCM-ECCOMAS Congress 2020 2021-01-01

View Video Presentation: https://doi.org/10.2514/6.2022-1341.vid The SLOshing Wing Dynamics (SLOWD) project aims to investigate the modelling of fuel sloshing physics reduce design loads on aircraft structures. This goal will be achieved through investigating damping effect dynamics flexible wing-like structures carrying liquid (fuel) via development experimental set-ups complemented by novel numerical and analytical tools. primary focus is application capabilities wing large civil passenger...

10.2514/6.2022-1341 article EN AIAA SCITECH 2022 Forum 2022-01-03

As part of a wider project to understand the applicability utilising slosh-based damping for wing-like structures, simulations partially filled tanks subjected harmonically oscillating and vertical motion are presented. The Volume Fluid modelling approach is used capture air–water interface different turbulence models based on Reynolds Averaged Navier–Stokes equations employed. No-model also conducted demonstrate efficacy using in simulation sloshing flows. Accuracy assessed by comparing...

10.3390/app12178851 article EN cc-by Applied Sciences 2022-09-02

The added damping generated by liquid sloshing in a tank has been utilized number of civil applications, including aviation, to reduce the vibration system. As part wider EU H2020 project called SLOWD (Sloshing Wing Dynamics), presented study performed numerical simulations on slosh-induced tanks that were under free decay oscillations and embedded an aircraft wing-like structure. A new open-source partitioned fluid–structure interaction software framework is employed for simulations....

10.3390/app12178481 article EN cc-by Applied Sciences 2022-08-25

Clutter within information visualization (infovis) systems is an area of continuing concern and receiving increasing research interest. Solutions to the problem vary in their approach, ranging from novel visualizations designed specifically cope with high data density, through statistical methodologies such as binning. This paper presents a flexible method that allows interactive placement grid based binning system aims enhance traditional techniques. User evaluations employing two specific...

10.2312/localchapterevents/tpcg/tpcg08/035-042 article EN 2008-01-01

Discrete Element Modelling (DEM) is a numerical technique that uses system of interacting discrete bodies to simulate the movement material being exposed external forces. This often used granular systems; however by adding further elements inter-connect bodies, it can be deformation large volume material. method has precedent for use in Earth Sciences and recently, with increase available computing power, been put good simulating evolution extensional faults scale crustal experiments involve...

10.2312/localchapterevents/tpcg/tpcg12/077-084 article EN 2012-01-01
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