Search Results for author: Darryl D. Holm

Found 5 papers, 1 papers with code

Wave-current interaction on a free surface

no code implementations23 Dec 2020 Dan Crisan, Darryl D. Holm, Oliver D. Street

The classic evolution equations for potential flow on the free surface of a fluid flow are not closed because the pressure and the vertical velocity dynamics are not specified on the free surface.

Fluid Dynamics Mathematical Physics Dynamical Systems Mathematical Physics Chaotic Dynamics

Stochastic effects of waves on currents in the ocean mixed layer

no code implementations24 Nov 2020 Darryl D. Holm, Ruiao Hu

This paper introduces an energy-preserving stochastic model for studying wave effects on currents in the ocean mixing layer.

Fluid Dynamics Dynamical Systems

Stochastic mesoscale circulation dynamics in the thermal ocean

no code implementations10 Jun 2020 Darryl D. Holm, Erwin Luesink, Wei Pan

Asymptotic expansion of the TRSW model equations in these three small parameters leads to the deterministic thermal versions of the Salmon's L1 (TL1) model and the thermal quasi-geostrophic (TQG) model, upon expanding in the neighbourhood of thermal quasi-geostrophic balance among the flow velocity and the gradients of free surface elevation and buoyancy.

Fluid Dynamics Geophysics

A Geometric Framework for Stochastic Shape Analysis

1 code implementation29 Mar 2017 Alexis Arnaudon, Darryl D. Holm, Stefan Sommer

We introduce a stochastic model of diffeomorphisms, whose action on a variety of data types descends to stochastic evolution of shapes, images and landmarks.

Image Registration

A Stochastic Large Deformation Model for Computational Anatomy

no code implementations16 Dec 2016 Alexis Arnaudon, Darryl D. Holm, Akshay Pai, Stefan Sommer

In the study of shapes of human organs using computational anatomy, variations are found to arise from inter-subject anatomical differences, disease-specific effects, and measurement noise.

Anatomy

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