Wake Vortex Characterization in Towing Tank Facilities Using PIV Technique

2003 ◽  
Author(s):  
Fabrizio De Gregorio ◽  
Antonio Ragni
Keyword(s):  
Wake Vortex ◽  
Towing Tank ◽  
Piv Technique

Experimental investigation of wake vortex in a water towing tank

2012 ◽  
Author(s):  
Yue Liu ◽  
Junwei Wang ◽  
Zhirong Liu ◽  
Feng Bao
Keyword(s):  
Experimental Investigation ◽  
Wake Vortex ◽  
Towing Tank

The Instability of a Four-Vortex Wake System in a Water Towing Tank

2013 ◽  
Vol 756-759 ◽  
pp. 1484-1488
Author(s):  
Yi He ◽  
Jin Wen Yang ◽  
Feng Bao
Keyword(s):  
Interaction Process ◽  
Wake Vortex ◽  
Vortex Wake ◽  
Towing Tank ◽  
Piv Measurement

A simplified rectangular baseline-airfoil model attached with tailored flaps was designed to study the Rayleigh-Ludwieg instability by tailoring a four-vortex wake system. By means of PIV measurement in a water towing tank, the interaction process and circulation evolution of the wake system were obtained systematically. The circulation remains was reduced to ca. 40% after 43 wingspans which proved the application potentials of this method in alleviating the wake vortex.

Traversing field of view and AR-PIV for mid-field wake vortex investigation in a towing tank

2002 ◽  
Vol 33 (6) ◽  
pp. 950-961 ◽  
Author(s):  
F. Scarano ◽  
C. van Wijk ◽  
L. Veldhuis
Keyword(s):  
Field Of View ◽  
Wake Vortex ◽  
Towing Tank

Application of Image Preprocessing on PIV Experimental Study of Wake Vortex Interactive Instability

2014 ◽  
Vol 696 ◽  
pp. 85-91
Author(s):  
Xiang Xiang Fu ◽  
Jin Sheng Liu ◽  
Jun Wei Wang ◽  
Feng Bao
Keyword(s):  
Field Data ◽  
Wake Vortex ◽  
Post Processing ◽  
Experiment Study ◽  
Image Preprocessing ◽  
Towing Tank ◽  
Wing Model ◽  
Piv Measurement ◽  
Aircraft Wake ◽  
Vortex Velocity

A basic experiment study with a simplified wing model was carried out to introduce a opposite wake vortex by different sizes of spoilers. A PIV measurement was employed to obtain a two dimension wing wake vortex velocity field data of different spoilers in a water towing tank and confirm the existence of Reyleigh-Ludwieg instability in aircraft wake vortex. The image preprocessing is useful in PIV post-processing by comparing the three kinds of image preprocessing results with normal PIV image processing results.

Wake Vortex Control Using Modified Flaps

2013 ◽  
Vol 365-366 ◽  
pp. 827-834
Author(s):  
Yi He ◽  
Jin Wen Yang ◽  
Feng Bao
Keyword(s):  
Experimental Investigation ◽  
Research Work ◽  
Experimental Results ◽  
Wake Vortex ◽  
Towing Tank ◽  
Labor Conditions ◽  
Vortex Control ◽  
Piv Measurement ◽  
Aircraft Wake

The present paper is on the experimental investigation of a potentially effective method to alleviate the strength of aircraft wake vortex. The research work was carried out in a water-towing tank which equipped with a 2-D PIV system. By using modified flaps attached to the baseline-airfoil, the Rayleigh-Ludwieg instability of the wake vortex was activated, resulting in a premature dissipation of the wake vortex. The experimental results of PIV measurement exhibited that the circulation of the wake vortex was reduced to over 50% for the optimal case at 45 wingspans downstream with suitable settings, which proved the effectiveness of the modified-flap treatment in alleviating the wake vortex under labor conditions.

QUANTITATIVE ANALYSES OF FUEL SPRAY-AMBIENT GAS INTERACTION BY MEANS OF LIF-PIV TECHNIQUE

2011 ◽  
Vol 21 (6) ◽  
pp. 447-465 ◽  
Author(s):  
Jingyu Zhu ◽  
Keiya Nishida ◽  
Olawole Abiola Kuti ◽  
Seoksu Moon
Keyword(s):  
Fuel Spray ◽  
Piv Technique ◽  
Quantitative Analyses ◽  
Ambient Gas

THE IDENTIFICATION OF AN UNSTABLE WAKE VORTEX

2009 ◽  
Vol 16 (2) ◽  
pp. 103-125 ◽  
Author(s):  
Robert C. Nelson ◽  
Brian M. Babie
Keyword(s):  
Wake Vortex

Numerical study of wake vortex decay and descent in homogeneous atmospheric turbulence

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 643-656 ◽  
Author(s):  
Jongil Han ◽  
Yuh-Lang Lin ◽  
S. P. Arya ◽  
Fred H. Proctor
Keyword(s):  
Atmospheric Turbulence ◽  
Numerical Study ◽  
Wake Vortex
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