In this study, we performed a conceptual modeling on solute transport based on theoretical stream tube model (STM) with various travel time distributions assuming a pure convective flow through each tube in order to investigate how the lengths and distributions of solute travel time through STM affect the breakthrough curves at the end mixing surface. The conceptual modeling revealed that 1) th...

In this paper, Turbulent mixed convective heat transfer of water and Al2O3 nanofluid has been numerically studied in a horizontal tube under non-uniform heat flux on the upper wall and insulation in the lower wall using mixture model. For the discretization of governing equations, the second-order upstream difference scheme and finite volume method were used. The coupling of pressure and veloci...

We consider the tidal interaction of a binary consisting of a fully convective primary star and a relatively compact mass. Using a normal mode decomposition we calculate the evolution of the primary angular velocity and orbit for arbitrary eccentricity. The dissipation acting on the tidal perturbation is assumed to result from the action of convective turbulence the effects of which are assumed...

MHz-rate flow visualization and Planar Doppler Velocimetry (PDV) measurements were carried out in Mach 1.3 and 2.0 axisymmetric jets with Reynolds number based on the nozzle exit diameter of over 10 6 using a burst mode laser and a pair of high-speed CCD framing cameras. Determination of convective velocity from flow visualization using planar space-time correlation reveals strong evidence of b...

Sakurai’s object is a born again AGB star of the very late thermal pulse flavor. In this contribution I will discuss new models of stellar evolution and nucleosynthesis models of this phase. Two most intriguing properties of Sakurai’s objects have so far not been understood theoretically: the peculiar chemical appearance, in particular the high lithium abundance and the short time scale of only...

Abstract The Method of Object-based Diagnostic Evaluation (MODE) is used to perform an object-based verification approximately 1400 forecasts composite reflectivity from the operational HRRR during April–September 2019. In this study, MODE configured prioritize deep, moist convective storm cells typical those that produce severe weather across central and eastern United States warm season. part...

Context. Realistic stellar models are essential to the forward modelling approach in asteroseismology. For practicality however, certain model assumptions are also required. For example, in the case of subdwarf B stars, one usually starts with zero-age horizontal branch structures without following the progenitor evolution. Aims. We analyse the effects of common assumptions in subdwarf B models...

A sharp feature in a star's internal structure gives rise to a characteristic periodic signal in the frequencies of its global p-modes. Such a sharp feature occurs at the borders of a convective region in the star's interior. Several groups have used this characteristic signal to study the base of the solar convective envelope ((1], 2], and references therein). In this work, we apply the analys...

BACKGROUND Diastolic suction is a major determinant of early left ventricular filling in animal experiments. However, suction remains incompletely characterized in the clinical setting. METHODS AND RESULTS First, we validated a method for measuring the spatio-temporal distributions of diastolic intraventricular pressure gradients and differences (DIVPDs) by digital processing color Doppler M-...