000009238 001__ 9238
000009238 005__ 20141204092421.0
000009238 04107 $$aeng
000009238 046__ $$k12/05/2014
000009238 100__ $$aNovotný, J.
000009238 24500 $$aThe criterion of choosing the proper seeding particles

000009238 24630 $$n18.$$pEngineering Mechanics 2012
000009238 260__ $$bInstitute of Theoretical and Applied Mechanics, AS CR, Prague
000009238 506__ $$arestricted
000009238 520__ $$2eng$$aThis paper is focused on the problem of the ability of seeding particles to follow the flow field. One of the most important factors influencing the resultant accuracy of the measurement is using the proper seeding particles for feeding the flow when measuring by Particle Image Velocimetry method – PIV. The aim of the paper is to provide comprehensible instruction for choosing the proper type of seeding particles with regard to the flow characteristics and required measurement accuracy. The paper presents two methods with the help of which it is possible to determine the seeding particles’ ability to follow the flow field. The first method is based on the direct calculation of the phase lag and amplitude ratio between the particle and the fluid. The calculation is based on solution of the BBO equation for spherical particle. The other method results from the calculation of the particle time response, which defines the maximum frequency of disturbances, which are to be followed by the particle. In the conclusion, the method of choosing the seeding particles is proposed, depending on the required measurement accuracy.

000009238 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009238 653__ $$aPIV, seeding particles, BBO, accuracy

000009238 7112_ $$aEngineering Mechanics 2012$$cSvratka (CZ)$$d12/05/2014 - 15/05/2014$$gEM2012
000009238 720__ $$aNovotný, J.$$iManoch, L.
000009238 8560_ $$ffischerc@itam.cas.cz
000009238 8564_ $$s628135$$uhttps://invenio.itam.cas.cz/record/9238/files/201_Novotny_J-FT.pdf$$yOriginal version of the author's contribution as presented on CD, paper (No. 201).
000009238 962__ $$r8924
000009238 980__ $$aPAPER