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This thesis presents an in-depth investigation of Taylor bubbles in counter-current flows, employing a dual approach of high-fidelity numerical simulations and state-of-the-art experimental techniques. Taylor bubble is one of the manifestations of two-phase slug flow in a pipe. It consists of large ...

Na Odseku za reaktorsko tehniko Inštituta Jožef Stefan se postavlja nov eksperiment v Laboratoriju za termohidravliko večfaznih tokov (THELMA). Namen eksperimenta je študija temperaturnih fluktuacij na greti kovinski foliji, ki je hlajena s turbulentnim tokom. Načrtovanje eksperimenta temelji na num ...

The present study investigates the behaviour of thermal streaks on a heated foil which is cooled with turbulent flow in a square duct channel. Real-time infrared thermography is used to visualize and measure the spacing between the thermal streaks. A stainless-steel foil with a thickness of 25 micro ...

Dynamics of the Taylor bubble interface in the vertical counter-current flow was analyzed with video recordings at 100 – 800 frames per second. Taylor bubbles in air-water mixture were studied on time intervals of up to several minutes in stagnant conditions, where buoyancy is dynamically balanced b ...