About

In the field of aeronautical engineering, I work on fluid dynamics, especially the aerodynamics and structures of aeroplanes. My research focuses on both gas and liquid flows at different scales, from the macroscopic (visible to the naked eye) to microscopic and beyond to nanoscopic scales.

I have expertise in non-equilibrium/rarefied gas dynamics (RGD), heat and mass transfer (HMT), droplet evaporation and condensation (DEC), two-phase flows in porous media, and natural convection of Newtonian/non-Newtonian fluids. My computational approaches include molecular dynamics (MD) simulations, kinetic theory modelling, lattice Boltzmann method (LBM) and conventional computational fluid dynamics (CFD).

We welcome visiting researchers and accept PhD students to join our Thermofluids Group at the University of Derby.

Research interests

Fluid mechanics and heat/mass transfer:

• Non-equilibrium/rarefied gas flow (RGD)
• Droplet heating and evaporation (DHE)
• Natural convection of Newtonian/non-Newtonian fluids
• Multiphase flow in porous media

Computational approaches include:

• Computational fluid dynamics (CFD)
• Kinetic theory modelling
• Lattice Boltzmann method (LBM)
• Molecular dynamics (MD) simulations

Recent publications

• Xie J (2022) Multi-scale modelling of fuel droplet heating and evaporation in combustion engines. Preprints 2022, 2022040067 (doi: 10.20944/preprints202204.0067.v1)
• Xie J (2020) A mean free path approach to the micro/nanochannel gas flows. Advances in Aerodynamics 2: 11
• Xie J, Borg MK, Gibelli L, Henrich O, Lockerby DA, Reese JM (2019) Effective mean free path and viscosity of confined gases. Physics of Fluids 31, 072002
• Xie J, Gibelli L, Borg MK, Henrich O, Lockerby DA, Reese JM (2019) Variation of molecular mean free path in confined geometries. AIP Conference Proceedings 2132, 090009
• Lamy-Chappuis B, Yardley BWD, He S, Zu YQ, Xie JF (2018) A test of the effectiveness of pore-scale fluid flow simulations and constitutive equations for modelling the effects of mineral dissolution on rock permeability. Chemical Geology 483, 501-510
• Xie J, Cao BY (2018) Influence of travelling surface waves on nanofluidic viscosity. Computers & Fluids 160, 42-50
• Xie J, Cao BY (2017) Natural convection of power-law fluids under wall vibrations: A lattice Boltzmann study. Numerical Heat Transfer A 72, 600-627
• Xie J, Cao BY (2017) Fast nanofluidics by travelling surface waves. Microfluidics and Nanofluidics 21: 111
• Xie J, He S, Zu YQ, Lamy-Chappuis B, Yardley BWD (2017) Relative permeabilities of supercritical CO2 and brine in carbon sequestration by a two-phase lattice Boltzmann method. Heat and Mass Transfer 53, 2637-2649
• Xie J, Cao BY (2017) Effect of various surface conditions on nanochannel flows past permeable walls. Molecular Simulation 43, 65-75
• Xie J, Cao BY (2016) Nanochannel flow past permeable walls via molecular dynamics. AIP Advances 6, 075307

Membership of professional bodies

• American Society of Mechanical Engineers (ASME)
• Institution of Mechanical Engineers (IMechE)

Qualifications

• PhD Heat and Mass Transfer, University of Brighton
• MSc Computational Fluid Dynamics, Northwestern Polytechnic University (NPU)
• BSc Aeronautical Engineering, NPU

Recent conferences

• Xie J (2022) Assessment of molecular mean free path and its application in micro/nanochannel flows. 32th International Symposium on Rarefied Gas Dynamics (RGD32), 4-8 July 2022, Seoul, South Korea.
• Xie J (2019) UKFN Special Interest Group in “Multiscale and Non-continuum Flows”, 17 December in Windermere, England
• Xie J, Cao BY (2018) Lattice Boltzmann modelling of natural convection of power-law fluids under wall vibrations. 16th International Heat Transfer Conference, 10-15 August 2018, Beijing, China
• Xie J, Gibelli L, Borg MK, Reese JM (2018) Variation of molecular mean free path in confined geometries. 31st International Symposium on Rarefied Gas Dynamics, 23-27 July 2018, Glasgow, Scotland
• Xie J, Gibelli L, Borg MK, Henrich O, Lockerby DA, Reese JM (2018) A direct numerical evaluation of molecular mean free paths. 2018 European Conference on Microfluidics and Non-Equilibrium Gas Flows, 28 Feb-2 March 2018, Strasbourg, France
• Xie J, Cao BY (2016) Effects of fluid-wall interaction on nanochannel flows past permeable walls. 2016 International Conference of Microfluidics, Nanofluidics and Lab-on-a-Chip, 10-12 June 2016, Dalian, China
• Xie J, Cao BY (2016) Molecular dynamics study on the fluid flow in nanochannels with permeable walls. ASME 2016 5th Micro/Nanoscale Mass and Heat Transfer International Conference, 4-6 January 2016, Biopolis, Singapore

In the media

• The Scientists, Engineers and Technologists (SET) for BRITAIN, Exhibition in the Engineering Section, the House of Commons (Parliament), 12th March 2012, London

Teaching responsibilities

• Computational Fluid Dynamics (CFD)
• Finite Element Analysis (FEA)
• Heat and Mass Transfer
• Materials and Manufacturing Processes