Item talk:Q336643

{

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   "name": "FOURPT - An unsteady, one-dimensional, open-channel flow model",
   "description": [
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       "@type": "TextObject",
       "additionalType": "description",
       "abstract": "FOURPT is a numerical model for simulating unsteady, one-dimensional flow in networks of open channels. Options particularly useful in training or prototyping include selection of governing equations (kinematic, diffusion, or dynamic), boundary-value perturbation, and user-programmable constraint equations. The model can simulate non-trivial concepts, such as flow in complex interconnected channel networks, meandering channels with variable effective flow lengths, hydraulic structures defined by unique three-parameter relations, and density-driven flow. Channel geometry may be rectangular, trapezoidal, or irregular depending upon which of three channel-property modules is linked with the program."
     },
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       "additionalType": "short description",
       "abstract": "Model item published in 1991 sourced from the USGS Model Catalog"
     }
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       "name": "1991",
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       "name": "Janice M Fulford",
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       "value": "Q46199",
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       "name": "streamflow",
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