Patents by Inventor Julian A. Simeonov

Julian A. Simeonov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • River discharge and depth estimation
    Patent number: 10584988
    Abstract: Embodiments relate to estimating river discharge and depth. Initially, observed velocities are used to generate a maximum velocity streamline for a river section, which is then used with an observed shoreline to construct a streamline curvilinear grid. The grid is used to interpolate scattered velocity data points, which are used with a bottom friction of the river section to approximate mean total head slope values. A least squares minimization scheme is applied to a velocity-slope relationship to estimate a bottom friction and discharge coefficient by fitting a difference in the predicted mean total head elevation values between upstream and downstream ends of the river section to a respective ?-average of the measured total head values of the river section. Discharge of the river section is determined based on the coefficient and a velocity-depth relationship and then used to generate a river forecast.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 10, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Julian A. Simeonov, Kenneth Todd Holland
  • RIVER DISCHARGE AND DEPTH ESTIMATION
    Publication number: 20180010936
    Abstract: Embodiments relate to estimating river discharge and depth. Initially, observed velocities are used to generate a maximum velocity streamline for a river section, which is then used with an observed shoreline to construct a streamline curvilinear grid. The grid is used to interpolate scattered velocity data points, which are used with a bottom friction of the river section to approximate mean total head slope values. A least squares minimization scheme is applied to a velocity-slope relationship to estimate a bottom friction and discharge coefficient by fitting a difference in the predicted mean total head elevation values between upstream and downstream ends of the river section to a respective ?-average of the measured total head values of the river section. Discharge of the river section is determined based on the coefficient and a velocity-depth relationship and then used to generate a river forecast.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 11, 2018
    Inventors: Julian A. Simeonov, Kenneth Todd Holland