Πλοήγηση ανά Συγγραφέα "Karapantsios, T. D."
-
Bubble dynamics during degassing of liquids at microgravity conditions
Divinis, N.; Karapantsios, T. D.; de Bruijn, R.; Kostoglou, M.; Bontozoglou, V.; Legros, J. C. (2006)This work investigates the growth of bubbles generated in a liquid saturated with dissolved CO(2) when its temperature is rapidly and locally raised above the saturation value, still below the boiling point of the test ... -
Bubbles growing in supersaturated solutions at reduced gravity
Divinis, N.; Karapantsios, T. D.; Kostoglou, M.; Panoutsos, C. S.; Bontozoglou, V.; Michels, A. C.; Sneep, M. C.; De Bruijn, R.; Lotz, H. (2004)This work investigates bubbles growing in a liquid saturated with a dissolved gas when its temperature is locally raised above its saturation value, yet below boiling. Local supersaturation is realized by giving heat pulses ... -
Estimation of total atmospheric pollution using global radiation data: introduction of a novel clear day selection methodology
Karapantsios, T. D.; Hatzimoisiadis, K. A.; Balouktsis, A. I. (1999)This work investigates the possibility of determining the degree of atmospheric pollution over the small Greek city of Serres based solely on measurements of global solar radiation and some simple meteorological variables. ... -
Investigation of the oscillating bubble technique for the determination of interfacial dilatational properties
Karapantsios, T. D.; Kostoglou, M. (1999)A mathematical framework is developed for measuring the dilatational rheological properties of gas-liquid interfaces by analyzing small amplitude radial oscillations of an air bubble blown into a liquid substrate. Contrary ... -
Lateral motion and interaction of gas bubbles growing over spherical and plate heaters
Divinis, N.; Karapantsios, T. D.; De Bruijn, R.; Kostoglou, M.; Bontozoglou, V.; Legros, J. C. (2006)This work investigates the motion of CO2 bubbles emerging in n-heptane when a heat pulse given to a submerged heater creates local supersaturation. The ensuing slow diffusion-induced bubble expansion makes bubble motion ... -
A new method for the characterization of electrically conducting liquid bridges
Kostoglou, M.; Karapantsios, T. D. (2000)An electrical conductance technique is employed in investigating the behavior of constant volume liquid bridges when their length is altered. The liquid bridges are edge-pinned between two vertical, identical rods with a ... -
Nucleation, growth and detachment of neighboring bubbles over miniature heaters
Karapantsios, T. D.; Kostoglou, M.; Divinis, N.; Bontozoglou, V. (2008)This work investigates how simultaneous CO2 bubbles desorb from water and n-heptane when these liquids become supersaturated with dissolved CO2. Supersaturation is imposed locally by a miniature heater so bubbles grow at ... -
Self-similar growth of a gas bubble induced by localized heating: the effect of temperature-dependent transport properties
Divinis, N.; Kostoglou, M.; Karapantsios, T. D.; Bontozoglou, V. (2005)A gas bubble growing in a saturated liquid under the action of an internal heat source is studied theoretically as a model problem for the growth of a bubble around a miniature spherical heater submerged in the liquid. In ... -
Students' awareness of the urban environment in a small Greek city
Karapantsios, T. D.; Boutskou, E. I.; Balouktsis, A. I. (1999)Guided and open ended questionnaires are distributed to secondary school students in the small Greek city of Serres in order to study their preconceptions about the urban environment. According to students' responses the ...