Combining high-speed planar PIV and motion tracking of a flexible cylinder in cross-flow

نویسندگان

چکیده

Most modeling studies investigating the flow dynamics in vegetation canopies are limited to rigid models as proxies for elements. However, most embody some degree of structural flexibility, resulting aeroelastic mechanisms coupling motion with surrounding flow. Studies addressing flexible typically quantify either or plant independently, thus missing instantaneous between turbulent stresses and deformations. Few experiments have been devoted measuring both quantities simultaneously. Okamoto Nezu (2009) utilized a combined PIV-PTV technique capture canopy motion. only stem tips was captured, opposed deformation entire stem. Py et al. (2006) employed digital image correlation (DIC) crop using in-field images. wind itself not measured across domain.
 The present work presents an experimental that can be study flow–structure interaction canopies, could extended other and/or moving objects. High-speed PIV data idealized element, consisting cylinder, together corresponding displacement field throughout cylinder were simultaneously obtained combining fluorescent imaging refractive index matching (RIM).

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A high-speed tomographic PIV system for measuring zooplanktonic flow

Quantification of the hydrodynamic disturbance of free-swimming zooplankton provides insight into propulsion as well as organism sensory interactions. Current flow measurement techniques, such as planar particle image velocimetry (PIV), are limited by their two-dimensional nature. These techniques also are challenged by the small spatial scale of zooplankton, by the high speeds achieved by many...

متن کامل

Piv of a Precessing Cylinder Flow at Large Tilt Angles

Planar particle image velocimetry measurements of the flow in a precessing cylinder are presented for nutation angles of up to 15◦. For a case of a moderate Reynolds number, we observe a rapid transition to a disordered state with a brief appearance of structures of high azimuthal wave numbers. Similarity to observations reported in previous experiments and numerical simulations at much lower t...

متن کامل

Direct experimental comparison between tomo-PIV and scanning tomo-PIV: wake flow behind a half-cylinder

In this paper, a direct experimental comparison is made between scanning and tomo-PIV, on an unsteady wake flow behind a half-cylinder. Several seeding densities are used in order to demonstrate the capacities and limitations of both techniques. For the scanning technique, the effect of particles elongation is investigated and the influence of the seeding density on the volume reconstruction fo...

متن کامل

Motion tracking-enhanced MART for tomographic PIV

A novel technique to increase the accuracy of multiplicative algebraic reconstruction technique (MART) reconstruction from tomographic particle image velocimetry (PIV) recordings at higher seeding density than currently possible is presented. The motion tracking enhancement (MTE) method is based on the combined utilization of images from two or more exposures to enhance the reconstruction of in...

متن کامل

epistemic modality in english and persian academic writing: a cross-linguistic study of genre on the notion of transfer

چکیده حیطه ی نوشتار دانشگاهی اخیرا شاهد تغییرات عمده ای از غیرشخصی بودن (عینی بودن) به شخصی بودن بوده است. شخصی بودن متون دانشگاهی اهمیت استفاده از وجهیت معرفتی را برجسته می سازد چرا که? وجهیت معرفتی? بر اساس یکی از تعاریف ارائه شده از این مقوله? ارتباط تنگاتنگی با شخصی بودن داشته و به عنوان بیان نظر شخصی گوینده در مورد جز گزاره ای گفته در نظر گرفته میشود. بنابراین? با در نظر داشتن نقاط مشترک...

15 صفحه اول

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Symposium on Particle Image Velocimetry

سال: 2021

ISSN: ['2769-7576']

DOI: https://doi.org/10.18409/ispiv.v1i1.103