An Alternative Representation of Frazil Ice in the NHWAVE Model

Abstract

This report describes a series of phase-resolved simulations of small-scale interactions between waves and loosely aggregated, slushy sea ice commonly referred to as frazil ice. The model NHWAVE (Ma et al., 2012) is employed to simulate waves in all cases. The models routines for incorporating the damping effects of vegetation are modified to create a configurable representation of surface ice for a user-specified, fixed area of the water surface, while retaining the model parameters used for specifying the drag and blocking due to the vegetation. The frazil configuration parameters are varied to produce different degrees of wave damping for two different wave frequencies, and the effects on the free surface and the velocity profiles are examined and compared to theory. Several issues are identified with this new representation, and potential future improvements to resolve them are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Oct 08, 2021
Accession Number
AD1150090

Entities

People

  • Mark D. Orzech

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Arctic Ocean
  • Attenuation
  • Beaufort Sea
  • Boundary Layer
  • Flow
  • Flow Fields
  • Fluid Flow
  • Fluids
  • Layers
  • Measurement
  • Oceans
  • Phase Shift
  • Physics
  • Regions
  • Sea Ice
  • Simulations
  • Stratified Fluids
  • Turbulent Flow
  • Turbulent Mixing
  • Two Dimensional
  • Water
  • Wave Propagation
  • Waves

Fields of Study

  • Environmental science

Readers

  • Computational Modeling and Simulation
  • Military Logistics and Supply Chain Management
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers