Imperial College London
Professor John Christos Vassilicos

ProfessorJohn ChristosVassilicos

Faculty of Engineering, Department of Aeronautics

Visiting Professor
 
 
 
//

Contact

 

+44 (0)20 7594 5137j.c.vassilicos

 
 
//

Assistant

 

Miss Jackie O'Neill +44 (0)20 7594 5079

 
//

Location

 

CAGB 314City and Guilds BuildingSouth Kensington Campus

//

Summary

 

Publications

Publication Type
Year
to

168 results found

Nicolleau FCGA, Sung K-S, Vassilicos JC, 2013, Vertical Motions of Heavy Inertial Particles Smaller than the Smallest Scale of the Turbulence in Strongly Stratified Turbulence, FLOW TURBULENCE AND COMBUSTION, Vol: 91, Pages: 79-103, ISSN: 1386-6184

Journal article

Onishi R, Takahashi K, Vassilicos JC, 2013, An efficient parallel simulation of interacting inertial particles in homogeneous isotropic turbulence, JOURNAL OF COMPUTATIONAL PHYSICS, Vol: 242, Pages: 809-827, ISSN: 0021-9991

Journal article

Nedic J, Ganapathisubramani B, Vassilicos JC, Boree J, Brizzi LE, Spohn Aet al., 2012, Aeroacoustic Performance of Fractal Spoilers, 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Publisher: AMER INST AERONAUT ASTRONAUT, Pages: 2695-2710, ISSN: 0001-1452

Conference paper

Gomes-Fernandes R, Ganapathisubramani B, Vassilicos JC, 2012, Particle image velocimetry study of fractal-generated turbulence, JOURNAL OF FLUID MECHANICS, Vol: 711, Pages: 306-336, ISSN: 0022-1120

Journal article

Devenish BJ, Bartello P, Brenguier J-L, Collins LR, Grabowski WW, IJzermans RHA, Malinowski SP, Reeks MW, Vassilicos JC, Wang L-P, Warhaft Zet al., 2012, Droplet growth in warm turbulent clouds, QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Vol: 138, Pages: 1401-1429, ISSN: 0035-9009

Journal article

Laizet S, Fortune V, Lamballais E, Vassilicos JCet al., 2012, Low Mach number prediction of the acoustic signature of fractal-generated turbulence, 7th Symposium on Turbulence and Shear Flow Phenomena (TSFP), Publisher: ELSEVIER SCIENCE INC, Pages: 25-32, ISSN: 0142-727X

Conference paper

Valente, P & Vassilicos JC, 2012, Universal dissipation scaling for non-equilibrium turbulence, Phys. Rev. Lett

Journal article

Valente PC, Vassilicos JC, 2012, Dependence of decaying homogeneous isotropic turbulence on inflow conditions, PHYSICS LETTERS A, Vol: 376, Pages: 510-514, ISSN: 0375-9601

Journal article

Vassilicos JC, Mazellier N, 2012, Turbulence without Richardson-Kolmogorov Cascade, 4th Interdisciplinary Turbulence Initiative (ITI) Conference, Publisher: SPRINGER-VERLAG BERLIN, Pages: 17-20, ISSN: 0930-8989

Conference paper

Onishi R, Vassilicos JC, Takahashi K, 2012, Direct numerical simulation of interacting inertial particles in homogeneous isotropic turbulence, 7th International Symposium on Turbulence Heat and Mass Transfer (THMT), Publisher: BEGELL HOUSE, INC, Pages: 1472-1475

Conference paper

Laizet S, vassilicos JC, 2012, Fractal space-scale unfolding mechanism for energy-efficient turbulent mixing, Physical Review E, Vol: 86(4)

Journal article

Laizet S, Vassilicos JC, 2011, DNS of Fractal-Generated Turbulence, FLOW TURBULENCE AND COMBUSTION, Vol: 87, Pages: 673-705, ISSN: 1386-6184

Journal article

Valente PC, Vassilicos JC, 2011, The decay of turbulence generated by a class of multiscale grids, JOURNAL OF FLUID MECHANICS, Vol: 687, Pages: 300-340, ISSN: 0022-1120

Journal article

Valente PC, Vassilicos JC, 2011, Comment on "Dissipation and decay of fractal-generated turbulence" [Phys. Fluids 19, 105108 (2007)], PHYSICS OF FLUIDS, Vol: 23, ISSN: 1070-6631

Journal article

Dallas V, Vassilicos JC, 2011, Rapid growth of cloud droplets by turbulence, PHYSICAL REVIEW E, Vol: 84, ISSN: 2470-0045

Journal article

Dallas V, Vassilicos JC, 2011, Rapid growth of cloud droplets by turbulence., Phys Rev E Stat Nonlin Soft Matter Phys, Vol: 84

Assuming perfect collision efficiency, we demonstrate that turbulence can initiate and sustain the rapid growth of very small water droplets in air even when these droplets are too small to cluster, and even without having to take gravity and small-scale intermittency into account. This is because the range of local Stokes numbers of identical droplets in the turbulent flow field is broad enough even when small-scale intermittency is neglected. This demonstration is given for turbulence which is one order of magnitude less intense than is typical in warm clouds but with a volume fraction which, even though small, is nevertheless large enough for an estimated a priori frequency of collisions to be ten times larger than in warm clouds. However, the time of growth in these conditions turns out to be one order of magnitude smaller than in warm clouds.

Journal article

Clark NR, Vassilicos JC, 2011, Kinematic Simulation of Fully Developed Turbulent Channel Flow, FLOW TURBULENCE AND COMBUSTION, Vol: 86, Pages: 263-293, ISSN: 1386-6184

Journal article

Laizet S, Vassilicos JC, 2011, Passive scalar stirring by multiscale-generated turbulence

The stirring and mixing of a passive scalar by fractal gen- erated turbulence in the presence of a mean scalar gradient is studied in three dimensions by DNS (Direct Numerical Simu- lation). Passive scalar behaviour is of preliminary importance in turbulent mixing and can also provide an opportunity to understand turbulence itself. Recent experiments in wind tun- nels [1, 2] have shown that it is possible to tune fractal objects (see figure 1) as very efficient turbulence generators of po- tential use for static inline mixers. In this numerical work, turbulent mixing in regular and fractal grid turbulence is in- vestigated with a Prandtl number of 0.1. The results show that it is possible to improve turbulent stirring and heat transfer mixing by using a fractal square grid instead of a regular grid, even with the same blockage ratio and the same input velocity.

Conference paper

Laizet S, Fortuneé V, Lamballais E, Vassilicos JCet al., 2011, Fractal grid turbulence and acoustic predictions

In this numerical work, we compare the acoustic properties of a fractal square grid with those of a regular grid by means of a hybrid approach based on Lighthill's analogy and Direct Numerical Simulation (DNS). It has been shown that the turbulence generated by fractal objects can have different properties than those generated by a regular object: whereas a regular object effectively introduces a single length-scale into the flow, a fractal object can introduce a wide range of length-scales into the flow. These distinct turbulent states depending on the grid are found to lead to different acoustic radiations both in terms of sound pressure levels and frequencies.

Conference paper

Dallas V, Vassilicos JC, 2011, The Stagnation Point Structure of Wall-Turbulence and the Law of the Wall in Turbulent Channel Flow, WALLTURB International Workshop on Understanding and Modelling of Wall Turbulence, Publisher: SPRINGER, Pages: 327-334, ISSN: 1382-4309

Conference paper

Vassilicos JC, 2011, An infinity of possible invariants for decaying homogeneous turbulence, Phys. Lett. A

Journal article

Dallas V, Vassilicos JC, Hewitt GF, 2010, Strong polymer-turbulence interactions in viscoelastic turbulent channel flow, PHYSICAL REVIEW E, Vol: 82, ISSN: 2470-0045

Journal article

Faber T, Vassilicos JC, 2010, Acceleration-based classification and evolution of fluid flow structures in two-dimensional turbulence, PHYSICAL REVIEW E, Vol: 82, ISSN: 1539-3755

Journal article

Bartello P, Devenish BJ, Haigh JD, Vassilicos JCet al., 2010, CLOUDS AND TURBULENCE, BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, Vol: 91, Pages: 1087-1089, ISSN: 0003-0007

Journal article

Stresing R, Peinke J, Seoud RE, Vassilicos JCet al., 2010, Defining a New Class of Turbulent Flows, PHYSICAL REVIEW LETTERS, Vol: 104, ISSN: 0031-9007

Journal article

Laizet S, Lamballais E, Vassilicos JC, 2010, A numerical strategy to combine high-order schemes, complex geometry and parallel computing for high resolution DNS of fractal generated turbulence, COMPUTERS & FLUIDS, Vol: 39, Pages: 471-484, ISSN: 0045-7930

Journal article

Dallas V, Vassilicos JC, Hewitt GF, 2010, The mean flow profile of wall-bounded turbulence and its relation to turbulent flow topology, Pages: 87-90, ISSN: 1382-4309

Conference paper

Laizet S, Vassilicos JC, 2010, Direct Numerical Simulation of Fractal-Generated Turbulence, 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, Publisher: SPRINGER, Pages: 19-+, ISSN: 1382-4309

Conference paper

Mazellier, N & Vassilicos JC, 2010, Turbulence without Richardson-Kolmogorov cascade., Phys. Fluids, Vol: 22

Journal article

Chen L, Coleman SW, Vassilicos JC, Hu Zet al., 2010, Acceleration in turbulent channel flow, JOURNAL OF TURBULENCE, Vol: 11, Pages: 1-23, ISSN: 1468-5248

Journal article

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-html.jsp Request URI: /respub/WEB-INF/jsp/search-html.jsp Query String: id=00310192&limit=30&person=true&page=3&respub-action=search.html