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Dr Marcello Lappa

Senior Lecturer in the Department of Mechanical & Aerospace Engineering

James Weir Fluids Laboratory, Department of Mechanical and Aerospace Engineering,

University of Strathclyde, Glasgow G1 1XJ, UK

marcello.lappa@strath.ac.uk

Bio

Marcello Lappa is Senior Lecturer in the Department of Mechanical & Aerospace Engineering in the University of Strathclyde. Earlier places where he was involved in conducting research were mainly (in reversed chronological order), the Microgravity Advanced Research and Support Center (MARS, Italy from 2002 to 2009), the Institute of Advanced Material Study at the Kyushu University (Fukuoka, Japan, 2001) and the Department of Space Science and Engineering (DISIS) at the University of Naples (from 1995 to 2001). He also had a long working experience in a company working in the field of space applications. Dr. Marcello Lappa has more than 100 publications and has authored three books (published by Elsevier and John Wiley and Sons). In 2014 he attained a qualification (habilitation) to the rank of Full Professor (released by the Italian Minstry of education, University and Research - MIUR) and was appointed one year later at the University of Strathclyde as a Senior Lecturer.

Books

M. Lappa (2004), **Fluids, Materials and Microgravity: Numerical Techniques and Insights into the Physics**, 538 pages, ISBN-13: 978-0-08-044508-3, ISBN-10: 00-804-4508-X, Elsevier Science (2004, Oxford, England)

http://www.elsevier.com/wps/find/bookdescription.cws_home/704347/description#description

M. Lappa (2009), **Thermal Convection: Patterns, Evolution and Stability**, 700 pages, ISBN-13: 978-0-470-69994-2, ISBN-10: 0470699949, John Wiley & Sons, Ltd (2009, Chichester, England).

http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470699949.html

M. Lappa (2012), **Rotating Thermal Flows in Natural and Industrial Processes**, 540 pages, ISBN-13: 978-1-1199-6079-9, ISBN-10: 1119960797, John Wiley & Sons, Ltd (2012, Chichester, England).

http://eu.wiley.com/WileyCDA/WileyTitle/productCd-1119960797.html

Selected publications

2017

**On the propagation and multiple reflections of a blast wave travelling through a dusty gas in a closed box**

M. Lappa, D. Drikakis, I. Kokkinakis

M. Lappa, D. Drikakis, I. Kokkinakis

*Physics of Fluids* (ISSN: 1070-6631), 29(3), 033301 (19 pages)

2017

**On the multiplicity and symmetry of particle attractors in confined non-isothermal fluids subjected to inclined vibrations**

M. Lappa

M. Lappa

*Int. J. Multiphase Flow* (ISSN: 0301-9322), 93: 71-83

2017

**On the effect of thermodiffusion on solute segregation during the growth of semiconductor materials by the vertical Bridgman method**

M. Ben Sassia, S. Kaddeche, M. Lappa, S. Millet, D. Henry, H. Ben Hadid

M. Ben Sassia, S. Kaddeche, M. Lappa, S. Millet, D. Henry, H. Ben Hadid

*J. Cryst. Growth* (ISSN: 0022-0248), 458: 154–165

2017

**Hydrothermal waves in two-dimensional liquid layers with sudden changes in the available cross-section**

M. Lappa

M. Lappa

*Int. J. Num. Meth. Heat Fluid Flow *(ISSN: 0961-5539), Accepted

2017

**On the General Properties of Steady Gravitational Thermal Flows of Liquid Metals in Variable Cross-section Containers**

M. Lappa and H. Ferialdi

M. Lappa and H. Ferialdi

*Review of Applied Physics* (ISSN: 2327-1604), 5(1): 1-10

2016

**On the onset of multi-wave patterns in laterally heated floating zones for slightly supercritical conditions**

M. Lappa

M. Lappa

*Physics of Fluids* (ISSN: 1070-6631), 28(12): 124105 (22 pages)

2016

**Numerical study into the morphology and formation mechanisms of threedimensional particle structures in vibrated cylindrical cavities with various heating conditions**

M. Lappa

M. Lappa

*Physical Review Fluids* (ISSN: 2469-9918), 1(6), 064203 (25 pages)

2016

**On the nature, formation and diversity of particulate coherent structures in Microgravity Conditions and their relevance to materials science and problems of Astrophysical interest**

M. Lappa

M. Lappa

*Geophysical and Astrophysical Fluid Dynamics* (ISSN: 0309-1929), 110(4): 348-386

2016

**Patterning behaviour of gravitationally modulated supercritical Marangoni flow in liquid layers**

M. Lappa

M. Lappa

*Phys. Rev. E* *Statistical Nonlinear, and Soft Matter Physics* (ISSN: 2470-0045), 93(5), 053107, (13 pages)

2016

**A Mathematical and Numerical Framework for the Analysis of Compressible Thermal Convection in Gases at very high Temperatures**

M. Lappa

M. Lappa

*Journal of Computational Physics *(ISSN: 0021-9991), 313: 687–712

2016

**Control of convection patterning and intensity in shallow cavities by harmonic vibrations**

M. Lappa

M. Lappa

*Microgravity Science & Technology* (ISSN: 0938-0108), 28(1): 29-39

2015

**A Practical Engineering Approach to the Design and Manufacturing of a mini kW Blade Wind Turbine: Definition, optimization and CFD Analysis**

G. Frulla , P. Gili, M. Visone , V. D'Oriano and M. Lappa

G. Frulla , P. Gili, M. Visone , V. D'Oriano and M. Lappa

*Fluid Dynamics & Materials Processing* (ISSN: 1555-256X), 11(3): 257-277

2014

**The JEREMI-Project on Thermocapillary Convection in Liquid Bridges. Part B: Impact of Co-axial Gas Flow**

V. Shevtsova, Y. Gaponenko, H.C. Kuhlmann, M. Lappa, M. Lukasser, S. Matsumoto, A. Mialdun, J.M. Montanero, K. Nishino, and I. Ueno

V. Shevtsova, Y. Gaponenko, H.C. Kuhlmann, M. Lappa, M. Lukasser, S. Matsumoto, A. Mialdun, J.M. Montanero, K. Nishino, and I. Ueno

*Fluid Dynamics & Materials Processing* (ISSN: 1555-256X), 10(2), 197-240

2014

**The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid**

M. Lappa

M. Lappa

* Physics of Fluids* (ISSN: 1070-6631)

2014

**Stationary Solid Particle Attractors in Standing Waves**

M. Lappa

M. Lappa

*Physics of Fluids* (ISSN: 1070-6631)*,* 26(1), 013305 (12 pages)

2014

**The JEREMI-Project on thermocapillary convection in liquid bridges. Part A: Overview of Particle Accumulation Structures**

H.C. Kuhlmann, M. Lappa, D. Melnikov, R. Mukin, F.H. Muldoon, D. Pushkin, V.S. Shevtsova, and I. Ueno

H.C. Kuhlmann, M. Lappa, D. Melnikov, R. Mukin, F.H. Muldoon, D. Pushkin, V.S. Shevtsova, and I. Ueno

*Fluid Dyn. Mater. Process*. (ISSN: 1555-256X), 10 (1), 1-36

2013

**On the Existence and Multiplicity of One-dimensional Solid Particle Attractors in Time-dependent Rayleigh-BĂ©nard Convection**

M. Lappa

M. Lappa

*Chaos* (ISSN 1054-1500), 23(1), 013105 (9 pages)

2013

**On the variety of particle accumulation structures under the effect of gjitters**

M. Lappa

M. Lappa

*Journal of Fluid Mechanics* (ISSN: 0022-1120), 726: 160-195

2013

**Assessment of the role of axial vorticity in the formation of Particle Accumulation Structures (PAS) in supercritical Marangoni and hybrid thermocapillary-rotation-driven flows**

M. Lappa

M. Lappa

*Physics of Fluids* (ISSN: 1070-6631)*, *25(1) 012101 (11 pages)

Research interests

Fluid mechanics, thermal sciences and related computational techniques are my primary research interests. Various scientific fields, including (but not limited to) thermal, mechanical and materials engineering, marine, aeronautical and aerospace engineering, organic and inorganic crystal growth, life sciences and many other related fields employ the results of these disciplines.

I am interested in studying problems of practical impact and enjoy the process of exploring applications in different domains, abstracting the essence of the considered subjects, and devising and analyzing techniques that offer solutions to a wide spectrum of real world applications. It is my experience that many superficially different problems, in fact, may share inherent characteristics. Understanding these aspects often enables us to tackle the problem at a deeper level and to develop better solutions that apply across a number of domains. I believe that, in addition to critical thinking and creativity, the ability to appreciate both industrial applications and fundamental research is equally important.

The following list gives a brief account of the past and present research topics of immediate interest to me. These subjects include both canonical problems and emerging technologies.

**Thermogravitational flows**

- Buoyancy convection
- High Temperature Thermal Convection in High Power Density Processes
- Furnace Engineering
- Buoyant rising jets originated from discrete sources of buoyancy

**Multi phase flows **

- Two-phase flows
- Drop coalescence and aggregation phenomena
- Drop coalescence and wetting prevention phenomena
- Thermocapillary migration of drops and bubbles
- Convective phenomena in liquid-liquid systems with a miscibility gap
- Flows with phase change and/or crystallization.

**Solid particle dynamics**

- Dynamics of dispersed particles in metal alloys and emulsions.
- Solid Particle Sedimentation.
- Solid particle spontaneous accumulation phenomena (inertial particle clustering).
- Ordering and transport of small particles in incompressible flows.
- Dynamics of particles in supersonic flow (blast wave propagation in dusty gas)

**CFD applied to Materials Processing **

- Thermal, mechanical and electromagnetic control of stability of flows driven by convection in crystal growth processes and devices.
- Modeling of solidifying interfaces (enthalpy method and related variants).
- Numerical tracking of moving fronts and boundaries (for inorganic and organic crystal growth processes and for biological tissue growth).
- Control of flow patterns and their stability
- Control of three-dimensional instabilities of convective flows by means of static magnetic fields
- Control of three-dimensional instabilities of convective flows by means of thermovibrational effects

**Thermocapillary (Marangoni) flows**

- Stability of Marangoni flow in cylindrical liquid bridges and floating-column configurations
- Marangoni flow in non-cylindrical (e.g., deformed by the effect of gravity) configurations
- Marangoni flows in open (2D and 3D) cavities driven by temperature gradients along the free surface
- Marangoni-Bènard systems (hexagonal flow patterns and subsequent transitions)
- Thermal Marangoni flow around droplets surrounded by a miscible or immiscible liquid

**Thermovibrational flows**

- Averaged models for flows driven by time-periodic forces (e.g., vibrations, g-jitter).
- Vibration-induced (g-jitter) stabilization and destabilization of flows (crystal growth in microgravity and in normal gravity conditions)

**Methods of numerical analysis in Computational Fluid Dynamics and Heat/Mass Transfer**

- Finite volume method in computational fluid dynamics
- Volume of Fluid (VOF) methods for tracking of moving fronts and boundaries
- Level set method for tracking of moving fronts and boundaries

**High Performance Computing**

- Parallelization of CFD codes on parallel computers (e.g., Cray T3E).
- Parallelization programming tools (Message Passing Interface, MPI)

**Biological fluid dynamics**

- Growth, kinetics and morphological evolution of organic protein crystals.
- Periodic precipitation and sedimentation of proteins (crystallization of organic substances in liquid phase, multi-crystal configurations).
- Multiple crystal nucleation phenomena in liquid phase.
- Evaluation of fluid dynamic effects on the growth and morphological stability of protein crystals.
- Application of Volume of Fluid and level-set methods to the growth of protein crystals.

**Tissue Engineering and CFD**

- Modeling of the growth of organic tissues in rotating bioreactors.
- Analysis of shape evolution as a function of environmental factors (e.g., the shear fluid dynamic stress)
- Application of VOF and level-set methods to the growth of biological tissue in vitro.