I'm Reader in Computational Fluid Dynamics and Director of Centre for Mathematical Modelling and Flow Analysis (CMMFA) at MMU.
Over the last 20 years I have been engaged in research and teaching in computational modelling of water and air flow and its interaction with structures with applications in offshore, ocean and aerospace engineering.
I have published widely in some of the most reputed journals in the field of computational physics, ocean and coastal engineering e.g., Journal of Computational Physics, Pro Roy Soc A, Inter. J. Num. Methods Eng., Physics of Fluids, Coastal Engineering, Ocean Engineering and Computers and Fluids on topics ranging from the development of novel numerical algorithms to their application to real engineering flow problems. Besides, I have presented numerous papers at major international conferences of the field e.g. ISOPE, ICCE, OMAE etc.
My reserach has been mainly funded by the EPSRC and in the past five years I have been PI or Co-I on six high profile projects with a total research income of over £1.8 m to MMU. My current research activities are primarily focused on the development of an integrated and efficient Numerical Wave Tank (NWT) CFD software for coastal and ocean engineering applicaitons.
I have taught the following undergradute units at MMU:
I have taught the following MMath unit as unit leader:
External Examiner (PhD), Dundee University, UK, 2016.
J. Tang, Y. Shen, DM. Causon, L. Qian, CG. Mingham (2017). Numerical study of periodic long wave run-up on a rigid vegetation sloping beach. Coastal Engineering. 121, pp.158-166.
P. Ferrer, D. Causon, L. Qian, C. Mingham, Z. Ma (2016). A multi-region coupling scheme for compressible and incompressible flow solvers for two-phase flow in a numerical wave tank. Computers and Fluids. 125, pp.116-129.
ZH. Ma, DM. Causon, L. Qian, CG. Mingham, T. Mai, et al. D. Greaves, A. Raby. (2016). Pure and aerated water entry of a flat plate. Physics of Fluids. 28(1), pp.016104-016104.
ZH. Ma, DM. Causon, L. Qian, CG. Mingham, HB. Gu, et al. P. Martínez Ferrer. (2014). A compressible multiphase flow model for violent aerated wave impact problems. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 470(2172), pp.20140542-20140542.
HB. Gu, L. Qian, DM. Causon, CG. Mingham, P. Lin (2014). Numerical simulation of water impact of solid bodies with vertical and oblique entries. Ocean Engineering. 75, pp.128-137.
Introductory Finite Volume Methods for PDEs. Bookboon.
P. Martínez Ferrer, L. Qian, Z. Ma, D. Causon, C. Mingham (2018). Improved numerical wave generation for modelling ocean and coastal engineering problems. Ocean Engineering. 152, pp.257-272.
P. Martinez-Ferrer, L. Qian, Z. Ma, D. Causon, C. Mingham (2018). Numerical Simulation of Wave Slamming on a Flap-Type Oscillating Wave Energy Device. International Journal of Offshore and Polar Engineering. 28(1), pp.65-71.
Z. Ma, L. Qian, PJ. Martinez-Ferrer, D. Causon, C. Mingham, et al. W. Bai. (2018). An overset mesh based multiphase flow solver for water entry problems. Computers and Fluids.
X. Feng, W. Bai, XB. Chen, L. Qian, ZH. Ma (2017). Numerical investigation of viscous effects on the gap resonance between side-by-side barges. Ocean Engineering. 145, pp.44-58.
J. Tang, Y. Shen, DM. Causon, L. Qian, CG. Mingham (2017). Numerical study of periodic long wave run-up on a rigid vegetation sloping beach. Coastal Engineering. 121, pp.158-166.
Z. Ma, D. Causon, L. Qian, C. Mingham, P. Martinez Ferrer (2016). Numerical investigation of air enclosed wave impacts in a depressurised tank. Ocean Engineering. 123, pp.15-27.
W. Bai, CG. Mingham, DM. Causon, L. Qian (2016). Detached eddy simulation of turbulent flow around square and circular cylinders on Cartesian cut cells. Ocean Engineering. 117, pp.1-14.
P. Ferrer, D. Causon, L. Qian, C. Mingham, Z. Ma (2016). A multi-region coupling scheme for compressible and incompressible flow solvers for two-phase flow in a numerical wave tank. Computers and Fluids. 125, pp.116-129.
ZH. Ma, DM. Causon, L. Qian, CG. Mingham, T. Mai, et al. D. Greaves, A. Raby. (2016). Pure and aerated water entry of a flat plate. Physics of Fluids. 28(1), pp.016104-016104.
ZH. Ma, DM. Causon, L. Qian, HB. Gu, CG. Mingham, et al. PM. Ferrer. (2015). A GPU based compressible multiphase hydrocode for modelling violent hydrodynamic impact problems. Computers & Fluids. 120, pp.---.
ZH. Ma, DM. Causon, L. Qian, CG. Mingham, HB. Gu, et al. P. Martínez Ferrer. (2014). A compressible multiphase flow model for violent aerated wave impact problems. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 470(2172), pp.20140542-20140542.
HB. Gu, L. Qian, DM. Causon, CG. Mingham, P. Lin (2014). Numerical simulation of water impact of solid bodies with vertical and oblique entries. Ocean Engineering. 75, pp.128-137.
J. Tang, D. Causon, C. Mingham, L. Qian (2013). Numerical study of vegetation damping effects on solitary wave run-up using the nonlinear shallow water equations. Coastal Engineering. 75, pp.21-28.
HB. Gu, DM. Causon, CG. Mingham, L. Qian (2013). Development of a free surface flow solver for the simulation of wave/body interactions. European Journal of Mechanics, B/Fluids. 38, pp.1-17.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2013). Numerical Simulation of Water Impact on a Wave Energy Converter in Free Fall Motion. Open Journal of Fluid Dynamics. 03(02), pp.109-115.
L. Qian, D. Causon, C. Mingham (2012). Comment comments on 'An improved free surface capturing method based on Cartesian cut cell mesh for water-entry and -exit problems'. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 468(2138), pp.305-309.
HB. Gu, DM. Causon, CG. Mingham, L. Qian (2012). Development of a free surface flow solver for the simulation of wave/body interactions. European Journal of Mechanics, B/Fluids.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2012). A Cartesian cut cell free surface capturing method for 3D water impact problems. International Journal for Numerical Methods in Fluids.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2011). Numerical simulation of floating bodies in extreme free surface waves. Natural Hazards and Earth System Science. 11(2), pp.519-527.
ZH. Ma, L. Qian, DM. Causon, HB. Gu, CG. Mingham (2011). A Cartesian ghost-cell multigrid Poisson solver for incompressible flows. International Journal for Numerical Methods in Engineering. 85(2), pp.230-246.
W. Bai, CG. Mingham, DM. Causon, L. Qian (2010). Finite volume simulation of viscous free surface waves using the Cartesian cut cell approach. International Journal for Numerical Methods in Fluids. 63(1), pp.69-95.
HB. Gu, D. Causon, C. Mingham, L. Qian, L. Qian, et al. PZ. Lin. (2010). A porous cell method for the simulation of fluid-solid interactions. Journal of Waterway and Harbor. 31(5),
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2009). Numerical wave tank study of a wave energy converter in heave. Proceedings of the International Offshore and Polar Engineering Conference.
L. Qian, DM. Causon, CG. Mingham, DM. Ingram (2006). A free-surface capturing method for two fluid flows with moving bodies. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 462(2065), pp.21-42.
L. QIAN, C. MINGHAM, D. CAUSON, D. INGRAM, M. FOLLEY, et al. T. WHITTAKER. (2005). NUMERICAL SIMULATION OF WAVE POWER DEVICES USING A TWO-FLUID FREE SURFACE SOLVER. Modern Physics Letters B. 19(28n29), pp.1479-1482.
L. Qian, DM. Causon, DM. Ingram, CG. Mingham (2003). Cartesian cut cell two-fluid solver for hydraulic flow problems. Journal of Hydraulic Engineering. 129(9), pp.688-696.
L. Qian, DM. Causon, DM. Ingram, CG. Mingham (2002). A two-fluid solver for hydraulic applications. Water Studies. 10, pp.327-336.
L. Qian, M. Vezza (2001). A Vorticity-Based Method for Incompressible Unsteady Viscous Flows. Journal of Computational Physics. 172(2), pp.515-542.
L. Qian, M. Vezza (1999). Simulation of parallel blade–vortex interaction using a discrete vortex method. The Aeronautical Journal. 103(1029), pp.537-543.
L. Qian, QP. Cao (1995). Computation of supersonic separated flow over the compression corner with local blowing and suction. Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica. 16(4), pp.477-481.
L. Qian, QP. Cao (1995). Numerical solution of supersonic flows over the compression corners using the pressure-splitting form reduced Navier-Stokes equations. Kongqi Donglixue Xuebao/Acta Aerodynamica Sinica. 13(2), pp.222-226.
. Tang DB, L. Qian, C. Shu (1993). Solution of unsteady boundary layer equation using the generalized differential quadrature method. Chinese Journal of Computational Physics. 10(2), pp.98-107.
L. QIan, QP. Cao (1992). Numerical simulation of the turbulent drag reduction by plate. Acta Aerodynamica Sinica. 10(3), pp.300-304.
C. Mingham, L. Qian, DM. Causon (2016). Computational Fluid Dynamics (CFD) Models. In: Numerical Modelling of Wave Energy Converters, State-of-the-Art Techniques for Single WEC and Converter Arrays. Academic Press,
DM. Causon, C. Mingham, L. Qian (2010). Developments in Multi-Fluid Finite Volume Cartesian Cut Cell Free Surface Capturing Methods. In: Advances in Numerical Simulation of Nonlinear Water Waves. World Scientific,
PJ. Martínez Ferrer, L. Qian, ZH. Ma, DM. Causon, CG. Mingham (2017). Modelling wave interaction with deformable structures based on a multi-region approach within OpenFOAM. In: Proceedings of The 27th International Ocean and Polar Engineering Conference. San Francisco, California, 25/6/2017. pp.678-685.
X. Chen, W. Bai, P. Taylor, ST. Quek, L. Qian, et al. J. Zhou, Z. Ma. (2017). Water Depth Effects on Fully Nonlinear Focused Waves. Dalian, China, 23/4/2017.
L. Qian, Z. Ma, P. Martinez Ferrer, D. Causon, C. Mingham (2016). Adapting OpenFOAM for modelling violent wave impact on structures. Osaka, Japan,
PJM. Ferrer, DM. Causon, L. Qian, CG. Mingham, ZH. Ma (2016). Numerical simulation of wave slamming on a flap type oscillating wave energy device. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.672-677.
Z. Ma, L. Qian, PM. Ferrer, D. Causon, C. Mingham (2016). Numerical simulation of water entry of 2D wedges. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.21-26.
F. Gao, ZH. Ma, J. Zang, DM. Causon, CG. Mingham, et al. L. Qian. (2015). Simulation of breaking wave impact on a vertical wall with a compressible two-phase flow model. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.679-683.
S. Yan, QW. Ma, V. Sriram, L. Qian, PJM. Ferrer, et al. T. Schlurmann. (2015). Numerical and experimental studies of moving cylinder in uni-directional focusing waves. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.711-718.
ZH. Ma, L. Qian, DM. Causon, CG. Mingham, T. Mai, et al. D. Greaves, A. Raby. (2015). The role of fluid compressibility in predicting slamming loads during water entry of flat plates. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.642-646.
HB. Gu, DM. Causon, CG. Mingham, L. Qian, ZH. Ma, et al. H-B. Chen, Z. Zheng. (2012). POWER OF A PISTON WAVE MAKER BY NUMERICAL METHOD. In: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON APAC 2011. Univ Hong Kong, Hong Kong, PEOPLES R CHINA, 14/12/2011.
L. Qian (2011). Simulation of focused waves using a free-surface capturing code. In: AIP Conference Proceedings. pp.255-257.
ZH. Ma, L. Qian, DM. Causon, CG. Mingham (2011). Simulation of solitary breaking waves using a two-fluid hybrid turbulence approach. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.231-237.
HB. Gu, DM. Causon, CG. Mingham, L. Qian, HB. Chen (2011). On the numerical simulation of a piston-type wavemaker. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.652-657.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2010). Numerical simulation of water impact involving three dimensional rigid bodies of arbitrary shape. In: Proceedings of the Coastal Engineering Conference.
HB. Gu, DM. Causon, CG. Mingham, L. Qian, PZ. Lin (2010). Numerical Simulation of Local Current Induced Scour. In: CHINESE-GERMAN JOINT SYMPOSIUM ON HYDRAULIC AND OCEAN ENGINEERING (CG JOINT 2010). Tianjin Univ, Tianjin, PEOPLES R CHINA, 21/9/2010. pp.374-380.
ZH. Ma, L. Qian, DM. Causon, HB. Gu, CG. Mingham (2010). The development of a Cartesian ghost-cell method for moving boundary problems. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.632-638.
HB. Gu, DM. Causon, CG. Mingham, L. Qian, F. Gao (2010). High resolution computation of free surface flows using a level set approach. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.715-722.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2010). Numerical simulation of nonlinear wave interactions with a wave energy converter. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.871-876.
HB. Gu, DM. Causon, CG. Mingham, L. Qian (2009). Modelling 3D fluid sloshing using a semi-lagrangian level set method. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.247-251.
ZZ. Hu, DM. Causon, CG. Mingham, L. Qian (2009). Numerical wave tank study of a wave energy converter in heave. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.383-388.
HB. Gu, DM. Causon, CG. Mingham, L. Qian (2009). A fast-marching semi-lagrangian level set method for free surface flows. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.359-364.
D. Causon, L. Qian, ZZ. Hu, C. Mingham (2008). CFD modeling of wave loads on offshore wave energy devices. In: Proceedings of the International Offshore and Polar Engineering Conference.
D. Causon, L. Qian, ZZ. Hu, C. Mingham (2008). CFD modeling of wave loads on offshore wave energy devices. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.137-142.
L. Qian, D. Causon, C. Mingham (2007). Cartesian cut cell free surface capturing solver for wave floating body interactions. In: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. pp.641-646.
L. Qian, DM. Causon, C. Mingham (2007). Development of a 3D free surface capturing code for coastal engineering flow problems. In: NEW TRENDS IN FLUID MECHANICS RESEARCH. Shanghai, PEOPLES R CHINA, 15/8/2007. pp.328-331.
C. Mingham, L. Qian, DM. Causon, D. Ingram A parametric study of the OWSC wave power device using a two-fluid free surface capturing solver. In: Proceedings of World Maritime Technology Conference 2006. London, UK, 6/3/2006.
L. Qian, C. Mingham, D. Causon, D. Ingram (2005). A numerical study of the OWSC using a two-fluid free surface capturing code. In: Proceedings of 6th European Wave and Tidal Energy Conference,. Glasgow, 29/8/2005.
CG. Mingham, L. Qian, DM. Causon, DM. Ingram (2004). Non-linear simulation of wave energy devices. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.194-201.
DM. Causon, CG. Mingham, DM. Ingram, L. Qian (2004). Numerical experiments on slamming of rigid wedge-shaped bodies. In: Proceedings of the International Offshore and Polar Engineering Conference. pp.546-553.
L. Qian, C. Mingham, D. Causon, D. Ingram (2004). Numerical simulation of a wave driven rotating vane using a two-fluid solver. St. Thomas, US Virgin,
C. Mingham, L. Qian, D. Causon, D. Ingram, M. Folley, et al. TJ. Whittaker. (2003). A two-fluid numerical model of the LIMPET OWC. In: Proceedings of the Fifth European Conference on Wave Energy. Cork, Ireland,
L. Qian, D. Causon, D. Ingram, C. Mingham (2002). Development of a two-fluid solver for hydraulic flow problems. Montreal, Canada,
L. Qian, D. Causon, D. Ingram, D. Mingham (2002). Numerical simulation of breaking wave flow past a submerged hydrofoil using the two-fluid Cartesian cut cell approach. In: Proceedings of the 5th International Conference on Hydroinformatics. Cardiff, UK,
L. Qian (2001). A Cartesian cut cell method for incompressible unsteady viscous flows. Swansea, UK,
L. Qian, M. Vezza (2000). Development of a vorticity-based method for bluff body flows. Marseille, France,
L. Qian (1998). ‘Numerical simulation of blade-vortex interaction using a discrete vortex method. In: Proceedings of the 2nd European Conference on Wind Engineering. Prague,
L. Qian, X. Ming, QP. Cao (1995). Numerical simulation of the plane symmetric sudden expansion flow at low Re number. Singapore,
L. Qian, QP. Cao (1995). Solution of separated flows using the Ψ-ω form steady NS equation. In: Proceedings of the first Asian conference on CFD. Hong Kong,
L. Qian, QP. Cao (1993). Optimal study of turbulent drag reduction by plate manipulators. In: Proceedings of National Conference on Turbulence and Flow Instability. Nanjing, China,
L. Qian, QP. Cao (1991). Computation of supersonic viscous flow using reduced NS equations. In: Proceedings of the second international conference on fluid mechanics. Beijing, China,
L. Qian, D. Ingram, D. Causon (2001). Numerical modelling of blast wave interaction with obstacles. MMU, Health and Safety Laboratory.
C. Catlin, M. Ivings, D. Ingram, D. Causon, L. Qian (2001). Explosion hazard assessment: a study of the feasibility and benefits of extending current HSE methodology to take account of blast sheltering. Health and Safety Laboratory
L. Qian, M. Vezza (1996). A 3-D vortex particle method and the fast summation algorithm. Glasgow University
L. Qian (1995). Numerical solution of supersonic and hypersonic flow around a blunt cone at high incidence using the 3-D thin layer NS equations. Nanjing Aeronautical University
I have been invited to organise and chair sessions at the following international conferences:
I have been invited to review a large number of technical papers for the following journals and conferences:
Besides, I am a memebr of EPSRC Peer Review College responsible for reviewing its grant applicaitons.
I have been PI/Co-I on the following EPSRC and Leverhulme Trust projects with a total research income over £1.8M to MMU:
I have been invovled in the management of the EPSRC CCP-WSI project (EP/M022382, 2015 – 2020), a collaborative computational project among six UK universities and research institute with a further 35 academic and industrial partners. The project aims to build a UK wide network in wave structure interaction (WSI) research and to develop a generic numerical wave tank facility applicable to a wide range of engineering applications. As part of its activities, a number of code developers’ training sessions have been organised or planned for researchers working on the related projects and those from the broader WSI research communities and relevant industries within the UK. Focus Group Workshops will also be organised, to which academics and industry experts will be invited, to discuss WSI challenges in the context of: offshore oil and gas structures; wave and tidal energy structures; offshore wind structures. An output of these Focus Group Workshops will be the WSI computation and experiment roadmap identifying the research priorities in WSI and informing the EPSRC for its future funding decision.
Member, Peer Review College, EPSRC.