Browsing by Author "Karakasidis, T. E."
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3D simulations of flows in the reconstituted lake Karla, Thessaly, Greece
Neveskiotis, H.; Tserdani, K.; Sarris, I. E.; Karakasidis, T. E.; Liakopoulos, A. (2010)We report on threedimensional flow simulations carried out in order to describe the dominant water current patterns in the reconstituted lake Karla. The flow is considered to be generated mainly by wind shear while the ... 
The application of complex network time series analysis in turbulent heated jets
Charakopoulos, A. K.; Karakasidis, T. E.; Papanicolaou, P. N.; Liakopoulos, A. (2014)In the present study, we applied the methodology of the complex networkbased time series analysis to experimental temperature time series from a vertical turbulent heated jet. More specifically, we approach the hydrodynamic ... 
Application of ICT technology in physics education: Teaching and learning elementary oscillations with the aid of simulation software
Vavougios, D.; Karakasidis, T. E. (2008)In the present study we employ a combination of laboratory exercises and simulation. In particular we studied the case of teaching mechanical oscillations to undergraduate students of Polytechnic and Pedagogical departments. ... 
Cation adatom diffusion on the NiO(001) surface by molecular dynamics simulation
Karakasidis, T. E.; Papageorgiou, D. G.; Evangelakis, G. A. (2001)We present results concerning the diffusion of Ni2+ adatom on the (001) surface of NiO obtained by molecular dynamics simulations based on a rigid ion potential model. A wide temperature region was covered ranging from ... 
Cation vacancy diffusion on the NiO(001) surface by molecular dynamics simulations
Karakasidis, T. E.; Evangelakis, G. A. (1999)We present results concerning the cation vacancy diffusion mechanisms occurring on the NiO(001) surface along with their corresponding migration energies. Using a rigid ion potential and molecular dynamics simulations we ... 
Detection of lowdimensional chaos in wind time series
Karakasidis, T. E.; Charakopoulos, A. (2009)In the present work we investigated the existence of lowdimensional deterministic chaos in wind time series. The time series were obtained from the New Anchialos (Greece) Air Base Measurement station. In a first place we ... 
Dissipative Particle Dynamics investigation of parameters affecting planar nanochannel flows
Kasiteropoulou, D.; Karakasidis, T. E.; Liakopoulos, A. (2011)The method of Dissipative Particle Dynamics is applied to investigate the effect of the parameters involved in a nanochannel Poisseuille flow. The parameters considered here include (a) fluid/wall interactions, (b) wall ... 
A dissipative particle dynamics study of flow in periodically grooved nanochannels
Kasiteropoulou, D.; Karakasidis, T. E.; Liakopoulos, A. (2012)The effect of periodic rectangular wall roughness on planar nanochannel flow is investigated by dissipative particle dynamics simulation. The wall protrusion length is varied, and its effect on the flow is examined. Analysis ... 
Effect of wall roughness on shear viscosity and diffusion in nanochannels
Sofos, F.; Karakasidis, T. E.; Liakopoulos, A. (2010)The effect of wall roughness on liquid argon shear viscosity and diffusion coefficient in nanochannels is studied by nonequilibrium molecular dynamics. Diffusion coefficient results are presented in terms of average values ... 
Effects of wall roughness on flow in nanochannels
Sofos, F. D.; Karakasidis, T. E.; Liakopoulos, A. (2009)Nonequilibrium molecular dynamics simulation is applied to investigate the effect of periodic wall roughness on the flow of liquid argon through krypton nanochannels. The effect of the length of a rectangular protrusion ... 
Elastic properties of nanostructured materials with layered grain boundary structure
Karakasidis, T. E.; Charitidis, C. A.; Skarakis, D.; ChouliaraS, F. (2007)Atomistic calculations of the elastic constants for a bulk nanostructured material that consists of a layered structure where alternating layers meet along high angle grain boundaries and where atoms interact via a ... 
Fluid Flow at the Nanoscale: How Fluid Properties Deviate from the Bulk
Sofos, F.; Karakasidis, T. E.; Liakopoulos, A. (2013)The studies of fluid flows have been lately transferred to a significant extend at the micro and the nanoscale, since there is increasing interest in applications that could make possible the construction of systems from ... 
Fluid structure and system dynamics in nanodevices for water desalination
Sofos, F.; Karakasidis, T. E.; Liakopoulos, A. (2015)Nanofluidic applications are currently being investigated in use for water treatment systems as a power efficient and effective means of removing undesirable substances from drinking or sea water. A detailed study of liquid ... 
A fractional Brownian motion model for time series produced by constant temperature molecular dynamics simulations
Karakasidis, T. E.; Andreadis, I. (2002)In the present work we performed an analysis of time series of instantaneous temperature and pressure produced during constant temperature molecular dynamics. Simulations were applied to a nickel oxide grain boundary for ... 
Fuzzy polynucleotide spaces and metrics
Nieto, J. J.; Torres, A.; Georgiou, D. N.; Karakasidis, T. E. (2006)The study of genetic sequences is of great importance in biology and medicine. Mathematics is playing all important role in the study of genetic sequences and. generally, in bioinformatics. In this paper, we extend the ... 
Fuzzy regression analysis: An application on tensile strength of materials and hardness scales
Karakasidis, T. E.; Georgiou, D. N.; Nieto, J. J. (2012)In the present paper we use fuzzy linear regression analysis and fuzzy similarity to investigate the relation of various hardness scales to tensile strength of materials. We examine the relation of the Vickers, Brinell, ... 
How wall properties control diffusion in grooved nanochannels: a molecular dynamics study
Sofos, F.; Karakasidis, T. E.; Liakopoulos, A. (2013)The effect of a geometricallyrough wall, amplified by its degree of wettability and stiffness on diffusion coefficient in cases of fluid flow in nanochannels is studied by nonequilibrium molecular dynamics. Diffusion ... 
Influence of nanoinclusions' grain boundaries on crack propagation modes in materials
Karakasidis, T. E.; Charitidis, C. A. (2011)The effect of nanoinclusions on materials strength and toughness has attracted great interest in recent years. It has been shown that tuning the morphological and microstructural features of materials can tailor their ... 
Mesoscopic simulation of fluid flow in periodically grooved microchannels
Kasiteropoulou, D.; Karakasidis, T. E.; Liakopoulos, A. (2013)In the present work we investigate the effect of wall protrusions on flows in microchannels using Dissipative Particle Dynamics (DPD). Protrusions are introduced by periodically placing rectangular protruding elements on ... 
Molecular dynamics simulation of the atomic structure of a NiO tilt grain boundary at high temperature
Karakasidis, T. E.; Meyer, M. (2000)The detailed atomic structure of the Sigma 5(310)[001] tilt grain boundary is still the subject of controversy since the structures deduced from highresolution electron microscopy (HREM) experiments differ from those ...