Time-resolved tomo-PIV measurements to study 3D coherent structures in a pulsed jet in cross-flow

نویسندگان

  • L. Thomas
  • R. Vernet
  • B. Tremblais
چکیده

The recent tomo-PIV technique is presented and apply to a pulsed jet in cross-flow. This technique gives the instantaneous three-dimensional velocity field in a fat sheet (typically the depth of the measurement volume is a tenth of the other dimensions). The results presented here show the applicability of the technique to the characterization of a complex three-dimensional flow.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On Coherent Structures of Turbulent Open-channel Flow Above a Rough Bed

Present study examines turbulent structures of a rough bed open-channel flow in the context of deterministic approach. Instantaneous velocity field is measured in different hydraulic conditions using two dimensional Particle Image Velocimetry (PIV) in vertical plane and Stereoscopic PIV in horizontal plane. Different techniques and quantities such as swirl strength, two-point and cross-correlat...

متن کامل

Flow Visualization by Conditional Sampling of a Single X-Wire Probe in a Very Long Run Experiment

Flow visualization techniques using tracer markers such as die, smoke, hydrogen bubbles, etc., have been widely used in experimental investigations of large scale structures of a variety of flow fields. They have played an important role in understanding the physics of the coherent structures formation and evolution in the transitional as well as the turbulent regions of the flow fields. Howeve...

متن کامل

Flow Visualization by Conditional Sampling of a Single X-Wire Probe in a Very Long Run Experiment

Flow visualization techniques using tracer markers such as die, smoke, hydrogen bubbles, etc., have been widely used in experimental investigations of large scale structures of a variety of flow fields. They have played an important role in understanding the physics of the coherent structures' formation and evolution in the transitional as well as the turbulent regions of the flow fields. Howev...

متن کامل

Integration of non-time-resolved PIV and time-resolved velocity point sensors for dynamic estimation of time-resolved velocity fields

We demonstrate a three-step method for estimating time-resolved velocity fields using time-resolved point measurements and non-time-resolved particle image velocimetry (PIV) data. First, we use linear stochastic estimation to obtain an initial set of time-resolved estimates of the flow field. These initial estimates are then used to identify a linear model of the flow physics. The model is inco...

متن کامل

3-d Least Squares Tracking in Time-resolved Tomographic Reconstruction of Dense Flow Marker Fields

Flow measurement techniques determine velocity vector fields in liquid or gas flows. In fluid mechanics, many methods are based on seeding particles to visualize the flow imaged by an adequate camera system. The tomo-PIV (tomographic particle image velocimetry) technique presented in this paper generates time-resolved volumetric reconstructions of a particle constellation from a limited number ...

متن کامل

ذخیره در منابع من


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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013