×

WIND NOISE ANALYZER AND WIND NOISE ANALYSIS METHOD

  • US 20190331510A1
  • Filed: 04/22/2019
  • Published: 10/31/2019
  • Est. Priority Date: 04/27/2018
  • Status: Active Grant
First Claim
Patent Images

1. A wind noise analyzer comprising:

  • an unsteady computational fluid dynamics calculation unit configured to;

    execute an unsteady computational fluid dynamics simulation involving moving a structure model modeled on a structure, and calculate, for each of spatial nodes that are nodes inside a predetermined region of a flow field around the structure model, an average flow velocity and an average vorticity over a predetermined time in a flow field inside the predetermined region; and

    calculate, for each of the spatial nodes, a value based on an amplitude of a turbulent flow velocity inside the predetermined region, in an angular frequency band of interest that is a target angular frequency band of a wind noise analysis; and

    a pressure source density calculation unit configured to calculate, based on the average flow velocity, the average vorticity, and the value based on the amplitude of the turbulent flow velocity calculated by the unsteady computational fluid dynamics calculation unit, a pressure source density that is an indicator of a degree of contribution of a flow field at a spatial node inside the predetermined region to a surface pressure fluctuation that is an amplitude of a pressure fluctuation at an analysis target point of the wind noise in a surface of the structure model.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×