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Tanana River Test Site Model Verification Using the Marine and Hydrokinetic Toolkit (MHKiT)

Energies

Laros, James H.; Olson, Sterling S.; Fao, Rebecca; Keester, Adam J.; Mcvey, James

The marine energy (ME) industry historically lacked a standardized data processing toolkit for common tasks such as data ingestion, quality control, and visualization. The marine and hydrokinetic toolkit (MHKiT) solved this issue by providing a public software deployment (open-source and free) toolkit for the ME industry to store and maintain commonly used functionality for wave, tidal, and river energy. This paper demonstrates an initial model verification study in MHKiT. Using Delft3D, a numerical model of the Tanana River Test Site (TRTS) at Nenana, Alaska was created. Field data from the site was collected using an Acoustic Doppler Current Profiler (ADCP) at the proposed Current Energy Converter (CEC) locations. MHKiT is used to process model simulations from Delft3D and compare them to the transect data from the ADCP measurements at TRTS. The ability to use a single tool to process simulation and field data demonstrates the ease at which the ME industry can obtain results and collaborate across specialties, reducing errors and increasing efficiency.

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TYPE Journal Article YEAR 2023
DOIOSTIScopusDOIOSTIScopus

The Flux-Differencing Discontinuous Galerkin Method Applied to an Idealized Fully Compressible Nonhydrostatic Dry Atmosphere

Journal of Advances in Modeling Earth Systems

Souza, A.N.; He, J.; Bischoff, T.; Waruszewski, MacIej; Novak, L.; Barra, V.; Gibson, T.; Sridhar, A.; Kandala, S.; Byrne, S.; Wilcox, L.C.; Kozdon, J.; Giraldo, F.X.; Knoth, O.; Marshall, J.; Ferrari, R.; Schneider, T.

Dynamical cores used to study the circulation of the atmosphere employ various numerical methods ranging from finite-volume, spectral element, global spectral, and hybrid methods. In this work, we explore the use of Flux-Differencing Discontinuous Galerkin (FDDG) methods to simulate a fully compressible dry atmosphere at various resolutions. We show that the method offers a judicious compromise between high-order accuracy and stability for large-eddy simulations and simulations of the atmospheric general circulation. In particular, filters, divergence damping, diffusion, hyperdiffusion, or sponge-layers are not required to ensure stability; only the numerical dissipation naturally afforded by FDDG is necessary. We apply the method to the simulation of dry convection in an atmospheric boundary layer and in a global atmospheric dynamical core in the standard benchmark of Held and Suarez (1994, https://doi.org/10.1175/1520-0477(1994)075〈1825:apftio〉2.0.co;2).

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TYPE Journal Article YEAR 2023
DOIOSTIScopus
Results 1751–1775 of 96,771
Results 1751–1775 of 96,771