Demosthenes Kivotides

Dr

  • United Kingdom

Accepting PhD Students

19992019
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Research Output 1999 2018

2018
2 Citations

Interactions between vortex tubes and magnetic-flux rings at high kinetic and magnetic Reynolds numbers

Kivotides, D., 13 Mar 2018, In : Physical Review Fluids. 3, 3, 21 p., 033701.

Research output: Contribution to journalArticle

Open Access
File
Magnetic flux
Reynolds number
Vortex
Tube
Vortex flow
1 Citations

Mutual-friction induced instability of normal-fluid vortex tubes in superfluid helium-4

Kivotides, D., 5 Jun 2018, In : Physics Letters A. 382, 22, p. 1481-1485 5 p.

Research output: Contribution to journalLetter

vortex tubes
helium isotopes
friction
vorticity
fluids

Superfluid helium-4 hydrodynamics with discrete topological defects

Kivotides, D., 8 Oct 2018, In : Physical Review Fluids. 3, 10, 12 p., 104701.

Research output: Contribution to journalArticle

Open Access
File
Superfluid helium
Topological Defects
Superfluid
Hydrodynamics
Vortex flow
2017
Open Access
File
hydrodynamics
liquids
residual stress
aerosols
interactions
2015
3 Citations

Decay of finite temperature superfluid helium-4 turbulence

Kivotides, D., 1 Oct 2015, In : Journal of Low Temperature Physics. 181, 1, p. 68-76 9 p.

Research output: Contribution to journalArticle

Open Access
File
Superfluid helium
helium isotopes
Turbulence
turbulence
Fluids
4 Citations
Open Access
File
vortex rings
helium isotopes
vortices
fluids
vorticity
2014
6 Citations

Energy spectra of finite temperature superfluid helium-4 turbulence

Kivotides, D., 22 Oct 2014, In : Physics of Fluids. 26, 10, 15 p., 105105.

Research output: Contribution to journalArticle

Open Access
File
helium isotopes
energy spectra
turbulence
fluids
vortices
2011
14 Citations

Spreading of superfluid vorticity clouds in normal-fluid turbulence

Kivotides, D., 10 Feb 2011, In : Journal of Fluid Mechanics. 668, p. 58-75 18 p.

Research output: Contribution to journalArticle

Vorticity
vorticity
Turbulence
turbulence
Vortex flow
2010
5 Citations

Stochastic entangled chain dynamics of dense polymer solutions

Kivotides, D., Wilkin, S. L. & Theofanous, T. G., 14 Oct 2010, In : Journal of Chemical Physics . 133, 14, 10 p., 144903.

Research output: Contribution to journalArticle

Polymer solutions
Polymers
polymers
Elasticity
Dynamic models
3 Citations

Stretching of polymer chains by fluctuating flow fields

Kivotides, D., Wilkin, S. L. & Theofanous, T. G., 15 Nov 2010, In : Physics Letters A. 375, 1, p. 48-52 5 p.

Research output: Contribution to journalArticle

flow distribution
polymers
interactions
probability density functions
microbalances
2009
5 Citations

Elementary vortex processes in thermal superfluid turbulence

Kivotides, D. & Wilkin, S. L., 30 Sep 2009, In : Journal of Low Temperature Physics. 156, 3-6, p. 163-181 19 p.

Research output: Contribution to journalArticle

Open Access
Vorticity
Vortex flow
Turbulence
turbulence
vortices
15 Citations

Entangled chain dynamics of polymer knots in extensional flow

Kivotides, D., Wilkin, S. L. & Theofanous, T. G., 29 Oct 2009, In : Physical Review E. 80, 4, 16 p., 041808.

Research output: Contribution to journalArticle

Knot
Polymers
polymers
Entanglement
Hydrodynamic Interaction
6 Citations

Mesoscopic dynamics of polymer chains in high strain rate extensional flows

Kivotides, D., Mitkin, V. V. & Theofanous, T. G., 30 Sep 2009, In : Journal of Non-Newtonian Fluid Mechanics. 161, 1-3, p. 69-85 17 p.

Research output: Contribution to journalArticle

High Strain Rate
Relaxation time
Stretching
strain rate
Strain rate
2008

Brownian dynamics of polymers at high strain rates

Kivotides, D. & Theofanous, T. G., 7 Jul 2008, AIP Conference Proceedings. Vol. 1027. p. 1384-1386 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

elongation
strain rate
polymers
inference
beads
5 Citations

Collisions of solid particles with vortex rings in superfluid helium

Kivotides, D. & Wilkin, S. L., 1 Jun 2008, In : Journal of Fluid Mechanics. 605, p. 367-387 21 p.

Research output: Contribution to journalArticle

Superfluid helium
vortex rings
Vortex flow
helium
collisions
5 Citations

Dynamics of solid particles in a tangle of superfluid vortices at low temperatures

Kivotides, D., Sergeev, Y. A. & Barenghi, C. F., 27 May 2008, In : Physics of Fluids. 20, 5, 10 p., 055105.

Research output: Contribution to journalArticle

Vortex flow
vortices
Temperature
Fluids
Trajectories
42 Citations

Interactions between particles and quantized vortices in superfluid helium

Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 28 Jan 2008, In : Physical Review B: Condensed Matter and Materials Physics. 77, 1, 13 p., 014527.

Research output: Contribution to journalArticle

Superfluid helium
Particle interactions
Vortex flow
helium
vortices
14 Citations

Motion of a spherical solid particle in thermal counterflow turbulence

Kivotides, D., 12 May 2008, In : Physical Review B: Condensed Matter and Materials Physics. 77, 17, 5 p., 174508.

Research output: Contribution to journalArticle

counterflow
Vortex flow
Turbulence
turbulence
vortices
12 Citations
counterflow
velocity measurement
Velocity measurement
Vortex flow
Turbulence
2007
11 Citations

Close approach of a spherical particle and a quantised vortex in helium II

Barenghi, C. F., Kivotides, D. & Sergeev, Y. A., 31 Aug 2007, In : Journal of Low Temperature Physics. 148, 3-4, p. 293-297 5 p.

Research output: Contribution to journalArticle

Helium
Vortex flow
helium
vortices
particle image velocimetry
23 Citations

Collision of a tracer particle and a quantized vortex in superfluid helium: self-consistent calculations

Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 7 Jun 2007, In : Physical Review B: Condensed Matter and Materials Physics. 75, 21, 4 p., 212502.

Research output: Contribution to journalArticle

Superfluid helium
tracers
Vortex flow
helium
vortices
5 Citations

Erratum: Motion of micron-size particles in turbulent helium II [Phys. Rev. B 74, 184506(2006)]

Sergeev, Y. A., Barenghi, C. F. & Kivotides, D., 25 Jan 2007, In : Physical Review B: Condensed Matter and Materials Physics. 75, 1, 1 p., 019904.

Research output: Contribution to journalArticle

5 Citations

Interaction of solid particles with a tangle of vortex filaments in a viscous fluid

Kivotides, D., Barenghi, C. F., Mee, A. J. & Sergeev, Y. A., 13 Aug 2007, In : Physical Review Letters. 99, 7, 4 p., 074501.

Research output: Contribution to journalArticle

vortex filaments
viscous fluids
direct numerical simulation
turbulence
homogeneous turbulence
3 Citations

Magnetic field generation by coherent turbulence structures

Kivotides, D., Mee, A. J. & Barenghi, C. F., 31 Aug 2007, In : New Journal of Physics. 9, 9 p., 291.

Research output: Contribution to journalArticle

Open Access
File
turbulence
magnetic fields
vortices
vortex filaments
galactic clusters
22 Citations
Energy transfer
bundles
Vortex flow
Vorticity
energy transfer
3 Citations

Superfluid contributions to general turbulence theory

Kivotides, D., 31 Aug 2007, In : Journal of Low Temperature Physics. 148, 3-4, p. 287-291 5 p.

Research output: Contribution to journalArticle

Turbulence
turbulence
phenomenology
mathematical models
Mathematical models

Tracer particles in turbulent superfluid helium

Sergeev, Y. A., Barenghi, C. F. & Kivotides, D., 2007, Advances in Turbulence XI - Proceedings of the 11th EUROMECH European Turbulence Conference. New York: Springer, p. 11-13 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trajectories of solid particles in a tangle of vortex-filaments

Mee, A. J., Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 28 Jun 2007, Advances in Turbulence XI - Proceedings of the 11th EUROMECH European Turbulence Conference. Berlin, Vol. 117. p. 55-57 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations

Viscous microdetonation physics

Kivotides, D., 9 Apr 2007, In : Physics Letters A. 363, 5-6, p. 458-467 10 p.

Research output: Contribution to journalArticle

detonation
physics
Reynolds number
supersonic combustion
deviation
2006
31 Citations

Coherent structure formation in turbulent thermal superfluids

Kivotides, D., 3 May 2006, In : Physical Review Letters. 96, 17, 4 p., 175301.

Research output: Contribution to journalArticle

fluids
vortices
vortex filaments
automatic control
statistical mechanics
9 Citations

Instability of trajectories of solid particles around vortex lines

Sergeev, Y. A., Barenghi, C. F., Kivotides, D. & Vinen, W. F., 13 Feb 2006, In : Physical Review B: Condensed Matter and Materials Physics. 73, 5, 3 p., 052502.

Research output: Contribution to journalArticle

Vortex flow
Visualization
Trajectories
trajectories
vortices
29 Citations

Motion of micron-size particles in turbulent helium II

Sergeev, Y. A., Barenghi, C. F. & Kivotides, D., 6 Nov 2006, In : Physical Review B: Condensed Matter and Materials Physics. 74, 18, 5 p., 184506.

Research output: Contribution to journalArticle

Helium
helium
Particle size
Fluids
Buoyancy
9 Citations

Numerical calculation of the interaction of superfluid vortices and a rigid sphere

Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 30 Sep 2006, In : Journal of Low Temperature Physics. 144, 4, p. 121-134 14 p.

Research output: Contribution to journalArticle

Adaptive algorithms
Vortex flow
vortices
derivation
interactions
8 Citations

Physics of solid particles in thermal counterflow

Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 1 Mar 2006, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 73, 5, p. 733-739 7 p.

Research output: Contribution to journalArticle

counterflow
vortices
physics
particle motion
turbulence
2005
12 Citations

Measurement of the normal-fluid velocity in superfluids

Kivotides, D., Barenghi, C. F. & Sergeev, Y. A., 17 Nov 2005, In : Physical Review Letters. 95, 21, 4 p., 215302.

Research output: Contribution to journalArticle

vortex rings
particle trajectories
fluids
particulates
propagation
7 Citations

Turbulence without inertia in thermally excited superfluids

Kivotides, D., 20 Jun 2005, In : Physics Letters A. 341, 1-4, p. 193-197 5 p.

Research output: Contribution to journalArticle

inertia
turbulence
vortices
fluid flow
unity
2004
14 Citations

Geometrical physics of the many vortex filament problem

Kivotides, D. & Leonard, A., 1 Apr 2004, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 66, 1, p. 69-75 7 p.

Research output: Contribution to journalArticle

vortex filaments
scaling
physics
inertia
vorticity
5 Citations

Quantum turbulence decay

Kivotides, D., 14 Jun 2004, In : Physics Letters A. 326, 5-6, p. 423-428 6 p.

Research output: Contribution to journalArticle

turbulence
vortices
decay
fluids
scaling laws
8 Citations

Stringy turbulence kinematics

Kivotides, D. & Leonard, A., 1 Feb 2004, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 65, 3, p. 344-350 7 p.

Research output: Contribution to journalArticle

kinematics
turbulence
exponents
histograms
eigenvectors
1 Citations

Topological noise scalings in superfluid and classical turbulence

Kivotides, D., 1 Aug 2004, In : JETP Letters. 80, 3, p. 152-156 5 p.

Research output: Contribution to journalArticle

turbulence
scaling
counterflow
vortices
intersections
2003
18 Citations

Computational model of vortex reconnection

Kivotides, D. & Leonard, A., 1 Aug 2003, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 63, 3, p. 354-360 7 p.

Research output: Contribution to journalArticle

vortices
vortex tubes
Kelvin waves
vortex rings
filaments
4 Citations

Geometry of turbulent tangles of material lines

Kivotides, D., 24 Nov 2003, In : Physics Letters A. 318, 6, p. 574-578 5 p.

Research output: Contribution to journalArticle

turbulent flow
torsion
fractals
energy spectra
curvature
28 Citations

Quantized turbulence physics

Kivotides, D. & Leonard, A., 13 Jun 2003, In : Physical Review Letters. 90, 23, p. 1-4 4 p., 234503.

Research output: Contribution to journalArticle

vorticity
turbulence
physics
turbulence models
turbulent flow
28 Citations

Reconnection of colliding vortex rings

Chatelain, P., Kivotides, D. & Leonard, A., 7 Feb 2003, In : Physical Review Letters. 90, 5, p. 1-4 4 p., 054501.

Research output: Contribution to journalArticle

vortex rings
intermittency
vorticity
dissipation
kinetic energy
2002
3 Citations

Superfluid vortex reconnections

Barenghi, C. F., Samuels, D. C. & Kivotides, D., 1 Jan 2002, In : Journal of Low Temperature Physics. 126, 1-2, p. 271-279 9 p.

Research output: Contribution to journalArticle

Vortex flow
vortices
reviewing
bursts
Turbulence
31 Citations

Velocity spectra of superfluid turbulence

Kivotides, D., Vassilicos, C. J., Samuels, D. C. & Barenghi, C. F., 15 Mar 2002, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 57, 6, p. 845-851 7 p.

Research output: Contribution to journalArticle

turbulence
fluids
energy spectra
velocity distribution
helium
2001
42 Citations

Fractal dimension of superfluid turbulence

Kivotides, D., Barenghi, C. F. & Samuels, D. C., 24 Sep 2001, In : Physical Review Letters. 87, 15, p. 1-3 3 p., 155301.

Research output: Contribution to journalArticle

fractals
turbulence
vortex filaments
clarity
vorticity
123 Citations

Kelvin waves cascade in superfluid turbulence

Kivotides, D., Vassilicos, J. C., Samuels, D. C. & Barenghi, C. F., 2 Apr 2001, In : Physical Review Letters. 86, 14, p. 3080-3083 4 p.

Research output: Contribution to journalArticle

Kelvin waves
cascades
turbulence
vortices
vortex rings
15 Citations

Quantum signature of superfluid turbulence

Kivotides, D., Vassilicos, J. C., Barenghi, C. F., Khan, M. A. I. & Samuels, D. C., 31 Dec 2001, In : Physical Review Letters. 87, 27 , p. 2753021-2753024 4 p.

Research output: Contribution to journalArticle

turbulence
signatures
Kolmogorov theory
pressure distribution
helium
12 Citations

Superfluid vortex reconnections at finite temperature

Kivotides, D., Barenghi, C. F. & Samuels, D. C., 15 Jun 2001, In : EPL: A Letters Journal Exploring the Frontiers of Physics. 54, 6, p. 774-778 5 p.

Research output: Contribution to journalArticle

vortices
Kelvin waves
fluids
temperature effects
filaments