A CFD Study of the Aerodynamics of a 6x6x8 Foot Cargo Container Suspended Beneath a Helicopter. Part 1: Aerodynamics of the Stationary Container

Abstract

This report is the first of several on a study of the unsteady aerodynamics of the CONEX cargo container This work is in support of an effort to develop a model of the CONEX unsteady aerodynamics for use in simulations of helicopter-slung-load dynamics It is known from the literature on cargo container aerodynamics that instability is caused by unsteady flow effects such as vortex shedding and flow structure lags and cannot be predicted by simple models that utilize only the static and quasi-static aerodynamics of the container This report describes the first phase of the work to develop the CED computational setup, validate it against the available wind tunnel data for the stationary CONEX, and provide some material on flow structure around the stationary CONEX Results are given for both steady flow and unsteady flow CED simulations. The Reynolds-averaged Navier-Stokes code known as OVERFLOW developed by NASA was used for this work.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2007
Accession Number
ADA473085

Entities

People

  • Earl P. Duque
  • Johannes N. Theron
  • Luigi Cicolani

Organizations

  • Northern Arizona University

Tags

Communities of Interest

  • Cyber
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Boundary Layer
  • Central Processing Units
  • Computational Fluid Dynamics
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Mechanical Engineering
  • Mechanical Properties
  • Simulations
  • Steady Flow
  • Steady State
  • Turbulent Mixing
  • Unsteady Aerodynamics
  • Unsteady Flow
  • Vortex Shedding
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Control Systems Engineering.
  • Fluid Mechanics and Fluid Dynamics.