Flux maps of energetic ions in Jupiter's outer radiation belt, calculated with the aid of a model of the current sheet magnetic field, are consistent with a spatial distribution that is uniform along field lines and monotonically decreasing with radial distance. This result is supported by numerical ion trajectory calculations that predict uniform filling of drift shells at high L values. Adiab...

The current concept for high-level radioactive waste disposal at Yucca Mountain is for the waste to be placed in underground tunnels (or drifts) in the middle of a thick unsaturated zone. Flow modeling and field testing have shown that not all flow encountering a drift will seep into the drift. The underlying reason for the diversion of unsaturated flow around a drift is that capillary forces i...

Latitudinal gradients of biodiversity and macroevolutionary dynamics are prominent yet poorly understood. We derive a model that quantifies the role of kinetic energy in generating biodiversity. The model predicts that rates of genetic divergence and speciation are both governed by metabolic rate and therefore show the same exponential temperature dependence (activation energy of approximately ...

• A method of measurement flow velocity in oil–water two-phase vertical using a non-invasive ultrasound Doppler sensor is developed. We present correlations for both oil-continuous and water-continuous flow. formulated the drift-flux model estimation superficial oil water from measured velocity. The estimated results this proposed are good agreement with reference flowmeters. Oil–water experime...

The initial value problem to the multi-dimensional drift-flux model for two-phase flow is investigated in this paper, and global existence of weak solutions with finite energy established general pressure-density functions without monotonicity assumption.

A new two-phase model for concentrated suspensions is derived that incorporates a constitutive law combining the rheology for non-Brownian suspension and granular flow. The resulting model naturally exhibits a Bingham-type flow property. This property is investigated in detail for the simple geometry of plane Poiseuille flow, where an unyielded or jammed zone of finite width arises in the cente...

Theory of drift of spiral waves has been developed for isotropic and anisotropic plane and isotropic sphere. Here, we proceed to parts of the isotropic torus surface with no-flux boundary conditions and show how velocity components and drift coefficients depend on core position, grid size and local surface curvature.