Title :
Application of stereo PIV measurement to the aeolian sand transport
Author :
Yang, Bin ; Wang, Yuan ; Liu, Jiang
Author_Institution :
Center of Environ. Mech., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
The 3-d motion information is significant in the study of aeolian sand transport. This paper describes the way to obtain the 3-d velocity field of moving sand by means of Stereo PIV. Double CCD-cameras are used to capture the sand particle images with the Scheimpflug configuration. The mapping function of each image plane to object plane resulted from the 3-d calibration method. Especially the evaluation of 2-d velocity field from original sand particle images adopted the MQD method on account of the dispersed properties of sand phase in wind-sand flow.
Keywords :
dust; flow visualisation; geophysical signal processing; image processing; minimisation; sand; wind; 3D motion information; 3D velocity field; MQD method; Scheimpflug configuration; aeolian sand transport; double CCD cameras; image plane-object plane mapping function; minimum quadratic difference method; stereo PIV measurement application; wind-sand flow; Cameras; Displacement measurement; Eyes; Focusing; Image reconstruction; Instruments; Mechanical variables measurement; Motion measurement; Particle measurements; Rotation measurement; MQD method; Stereo PIV; reconstruction; wind-sand flow;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274533
