The Tayler instability is an important but poorly studied magnetohydrodynamic that likely operates in stellar interiors. nonlinear saturation of the understood and has crucial consequences for dynamo action angular momentum transport radiative regions stars. We perform three-dimensional MHD simulations a cylindrical geometry, including strong buoyancy Coriolis forces as appropriate its operatio...

This paper starts from a brief revisit of key early published work so that an overview of modern Coriolis flowmeters can be provided based on a historical background. The paper, then, focuses on providing an updated review of Coriolis flow measurement technology over the past 20 years. Published research work and industrial Coriolis flowmeter design are both reviewed in details. It is the inten...

In this paper the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations. Model results are compared with experimental results to improve the knowledge on how external vibrations affect the measurement error. A Coriolis Mass-Flow Meter (CMFM) is an active dev...

We present measurements of the large-scale circulation LSC of turbulent Rayleigh-Bénard convection in water-filled cylindrical samples of heights equal to their diameters. The orientation of the LSC had an irregular time dependence, but revealed a net azimuthal rotation with an average period of about 3 days for Rayleigh numbers R 1010. On average there was also a tendency for the LSC to be ali...

The object of this note is to provide an interpretation of how motion on the rotating earth is affected by that rotation. The physical principles to be used are extremely well known, but as far as I know, have not been applied to this problem in precisely this style, a style designed to avoid the solution of differential equations. In spite of its long history, the subject is very much alive, e...

A Coriolis mass flow meter (Fig. 1) consists of an (essentially mechanical) vibrating flowtube through which the process fluid passes, and an (essentially electronic) transmitter. The transmitter maintains flowtube vibration by sending a drive signal to one or more drivers (d1, d2), and performs measurement calculations based on signals from two sensors (s1, s2). The phase difference between th...

Thermal-gravitational instability (TGI) is studied in the protogalactic environment. We extend our previous work, where we found that dense clumps first form out of hot background gas by thermal instability and later a small fraction of them grow to virialized clouds of mass Mc & 6×10 6 M⊙ by gravitational infall and merging. But these clouds have large angular momentum, so they would be diffic...

The viscous Shallow Water Equations and Quasi-Geostrophic Equations are considered in this paper. Some new terms, related to the Coriolis force, are revealed thanks to a rigorous asymptotic analysis. After providing well-posedness arguments for the new models, the authors perform some numerical computations that confirm the role played by the cosine effect in various physical configurations. Ke...