gradient flow

gradient flow

[′grād·ē·ənt ‚flō]
(meteorology)
Horizontal frictionless flow in which isobars and streamlines coincide, or equivalently, in which the tangential acceleration is everywhere zero; the balance of normal forces (pressure force, Coriolis force, centrifugal force) is then given by the gradient wind equation.
References in periodicals archive ?
All these monitoring stations together will help to compute the gradient flow of glacier mass, surface velocity and the rate at which glacier accumulates and loses its mass.
Secondly, consider the case that h is a gradient flow, i.
Multi-dimensional separations are simplified by enabling columns that differ in chemistry and internal diameter to be combined on a single LC system with dual gradient flow delivery and a proprietary flow path design.
It consists on the utilization of user-initialized curves that "evolve" inside the image until they find the contour sought for, taking advantages of different possible mechanisms, as B-splines, vector gradient flow and others.
The NanoLC System is the first HPLC (High Performance Liquid Chromatography) system to allow nanoscale LC/MS (liquid chromatography-mass spectrometry) without flow splitting, at gradient flow rates of 20-1000 nl/min.
His text is organized in eight sections and covers geometry of nonpositive curvature, convex sets and convex functions, weak convergence in Hadamard spaces, nonexpansive mappings, gradient flow of a convex functional, convex optimization algorithms, probablitistic tools in Hadamard spaces, and Tree Space and its applications.
It provides a gradient flow range of 50 nl/min to 25 [micro]l min for use with 50 [micro] to 300 [micro] ID columns.
Gradient flow is controlled by a Teflon valve centered between the two chambers.
Their topics include a new phase field model for approximating interfacial energies of multiphase systems, optimizing eigenvalues and eigenmodes by using the adjoint method, weak Monge-AmpAaAeAeAere solutions of the semi-discre optimal transportation problem, the Lagrangian branched transport model and the equivalence with its Eulerian formulation, and some nonlinear evolution systems that are perturbations of Wasserstein gradient flows.
Understanding of pressure gradient flows is also important from the point of view of flow and turbulence control.
Five papers address such topics as variational methods and gradient flows in probability spaces; nonlinear elliptic equations and homogenization; and equations of parabolic-hyperbolic mixed type and elasticity.