Professor Yonghao Zhang

Mechanical and Aerospace Engineering

Personal statement

Yonghao Zhang is Weir Professor of Thermodynamics and Fluid Mechanics and Director of James Weir Fluids Laboratory (http://www.jwfl.ac.uk). His ambition is to lead JWFL to advance our understanding of fundamental flow physics and chemistry in micro/nano systems, with the aim of utilising these research advances to develop new technologies with capabilities beyond any currently conceived.

His expertise is in the fluid dynamics of rarefied flows, which presents an important technological challenge, with long-term research and industrial implications. His group is among the first to develop lattice Boltzmann (LB) methods for simulating rarefied flows. In particular, they were the first to prove that high-order LB models can be reduced to the linearised BGK equation, giving confidence that LB models can be applied to highly rarefied gas dynamics. His group also developed a fast spectral method for solving the Boltzmann equation, considering different molecular potential models. His other research activities centre on complex flow physics, including multiphase flows, droplet technologies and granular flows. His research has been funded by the EPSRC, EU FP7, STFC, Royal Society of Edinburgh, and the Leverhulme Trust. 

Expertise

Has expertise in:

    My research has mainly been on understanding multi-scale and multi-physical flow physics through theoretical, computational and experimental studies. My group has developed a suite of computational models for gas non-equilibrium flows and multiphase flows, especially at the micro/nano scales. These models can be exploited for both fundamental research and engineering design simulations. We have recently been applying our models for pore scale study of unconventional gas flows in ultra-tight porous media, multiphase flows in porous media, and droplet dynamics in microfluidic channels. While we continue our effort to improve our models, we expand our work to erosion and corrosion of oil pipelines, fluids/surface interactions, and vacuum technologies.

Publications

Modelling thermally induced non-equilibrium gas flows by coupling kinetic and extended thermodynamic methods
Yang Weiqi, Gu Xiao-Jun, Emerson David R, Zhang Yonghao, Tang Shuo
Entropy Vol 21 (2019)
https://doi.org/10.3390/e21080816
GPU acceleration of an iterative scheme for gas-kinetic model equations with memory reduction techniques
Zhu Lianhua, Wang Peng, Chen Songze, Guo Zhaoli, Zhang Yonghao
Computer Physics Communications (2019)
https://doi.org/10.1016/j.cpc.2019.106861
Pore-scale study of counter-current imbibition in strongly water-wet fractured porous media using lattice Boltzmann method
Gu Qingqing, Zhu Lianhua, Zhang Yonghao, Liu Haihu
Physics of Fluids Vol 31 (2019)
https://doi.org/10.1063/1.5099500
A high order off-lattice kinetic method for high speed flows with a moderate Knudsen number
Wang Peng, Zhang Yonghao
31st International Symposium on Rarefied Gas Dynamics, RGD 2018 (2019)
https://doi.org/10.1063/1.5119633
Comparative study of the discrete velocity and the moment method for rarefied gas flows
Yang Weiqi, Gu Xiao Jun, Emerson David, Zhang Yonghao, Tang Shuo
31st International Symposium on Rarefied Gas Dynamics, RGD 2018 (2019)
https://doi.org/10.1063/1.5119619
A multi-physics peridynamics-DEM-IB-CLBM framework for the prediction of erosive impact of solid particles in viscous fluids
Zhang Ya, Pan Guang, Zhang Yonghao, Haeri Sina
Computer Methods in Applied Mechanics and Engineering Vol 352, pp. 675-690 (2019)
https://doi.org/10.1016/j.cma.2019.04.043

more publications

Research interests

I have been working on understanding multiscale fluid dynamics for many years. My research focuses are:

  • rarefied gas dynamics
  • interfacial dynamics
  • microfluidics: device optimal design and operation;
  • experimental and numerical study of microdroplet technology;
  • non-equilibrium fluid flows;
  • lattice Boltzmann method;
  • granualar flows

Projects

Efficient Pore-Scale Kinetic Simulation of Gas Flows in Ultra-Tight Porous Media (EPSKS) MSCA-IF-2017
Zhang, Yonghao (Principal Investigator)
15-Jan-2018 - 14-Jan-2020
UK Consortium on Mesoscale Engineering Sciences (UKOMES)
Zhang, Yonghao (Principal Investigator)
01-Jan-2018 - 31-Jan-2022
Advanced Hybrid Method for Post-Scale Simulation of Shale Gas Flows
Zhang, Yonghao (Principal Investigator) Wu, Lei (Co-investigator)
01-Jan-2018 - 28-Jan-2021
EPSRC Centre for Doctoral Training in Wind & Marine Energy Systems | Bezem, Kinan
Haeri, Sina (Principal Investigator) Zhang, Yonghao (Co-investigator) Bezem, Kinan (Research Co-investigator)
01-Jan-2017 - 01-Jan-2021
Doctoral Training Partnership (DTP 2016-2017 University of Strathclyde) | Houston, Gemma
Oliveira, Monica (Principal Investigator) Zhang, Yonghao (Co-investigator) Houston, Gemma (Research Co-investigator)
01-Jan-2017 - 01-Jan-2021
HiLeMMS: High-Level Mesoscale Modelling System
Zhang, Yonghao (Principal Investigator)
01-Jan-2017 - 01-Jan-2020

more projects

Address

Mechanical and Aerospace Engineering
James Weir Building

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