Since the seminal work of [92] on coupling the level set method of [69] to the equations for two-phase incompressible flow, there has been a great deal of interest in this area. That work demonstrated the most powerful aspects of the level set method, i.e. automatic handling of topological changes such as merging and pinching, as well as robust geometric information such as normals and curvatur...

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2014 Using a model equation we analyze the onset of convection for a roll instability. The wavelength increase follows from a variational approach. For certain wavelengths, phase diffusion turns out to be unstable against compression (or dilatation) and torsion of the rolls. Thermal phase fluctuations induce a tiny brownian motion of the structure which should be observable in carefully designe...

This paper considers a generalized model of [G. Skoulakis and R. J. Adler, Ann. Appl. Probab., 11 (2001), pp.488-543]. We show the existence of superprocesses in a random medium (flow) with location dependent branching. Technically, we make use of a duality relation to establish the uniqueness of the martingale problem and to obtain the moment formulas which generalize those of [G. Skoulakis an...

Setiu Lagoon experienced shoreline alterations, leading to the opening of a new inlet and closing old one. To evaluate effects these alterations on tidal flow in this shallow narrow lagoon, numerical hydrodynamic model was developed. The model-predicted water level current velocities were validated against field measurements, which yielded high simulation skill. transport particles residence ti...

The relationships among cerebral blood flow (CBF), oxygen consumption (CMRO(2)) and glucose use (CMR(glc)) constitute the basis of functional brain-imaging. Here we report spatially dissociated changes of CMRO(2) and CBF during motor activity that lead us to propose a revision of conventional CBF-CMRO(2) coupling models. In the left primary and supplementary motor cortices, CBF and CMRO(2) rose...

The soot formation processes in three different turbulent prevaporized non-premixed toluene jet flames stabilized on a jet-in-hot-coflow (JHC) burner were investigated this study. Reynolds number and the stoichiometric mixture fraction varied order to manipulate flow time scales chemistry, respectively. Time-resolved laser-induced incandescence (TiRe-LII), non-linear two-line atomic fluorescenc...

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible.dimensional spatially localized binary-fluid convection in a porous medium. Three-dimensional convection in a binary mixture in a porous medium heated from below is studied. For negative separation ratios steady spatially localized convection patterns are e...