Title:
FLOW VELOCIMETRY METHOD FOR VISUALIZED FLUID, AND FLOW VELOCIMETRY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/129642
Kind Code:
A1
Abstract:
[Problem] To reduce the load and shorten the data analysis time of an arithmetic processing device for acquiring a 3D velocity vector or three velocity components of a visualized fluid using a tomographic PIV measurement method. [Solution] Particle distribution at respective time periods (t,t＋Δt) within a 3D space (α) is reconstructed (S3) on the basis of 2D image data captured by imaging devices (1-4), and 3D luminance information for two continuous time periods is obtained. Slice regions (β) that are of a prescribed thickness and divide the 3D space are set, and the particle distribution within a slice region is extracted (S4) from the 3D luminance information. The particle distribution within the slice region is projected on a plurality of virtual projection planes, and a plurality of virtual 2D particle images for the two continuous time periods are generated (S6). A 3D velocity vector or three velocity components of a visualized fluid in the 3D space are acquired (S7, S8, S11) on the basis of a 2D motion vector for particles within a plurality of image planes, which is obtained by subjecting the plurality of 2D particle images to 2D PIV.
Inventors:
NISHINO KOUICHI (JP)
Application Number:
PCT/JP2015/055100
Publication Date:
September 03, 2015
Filing Date:
February 23, 2015
Export Citation:
Assignee:
FLOWTECH RES INC (JP)
International Classes:
G01F1/7086; G01F1/704; G01P5/20; G01P13/00
Foreign References:
| JP2005091364A | 2005-04-07 | |||
| JP2013217902A | 2013-10-24 | |||
| JP2009500115A | 2009-01-08 |
Attorney, Agent or Firm:
SHIMAZOE, Yoshihiko (JP)
Yoshihiko Shimazoe (JP)
Yoshihiko Shimazoe (JP)
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