Experimental investigation of Magnus force acting on smooth sphere at high Reynolds numbers
Result description
The paper describes the results of experimental research dealing with rotating smooth spherical particles moving quasi-steadily in calm water. The motion of the particles was recorded by a digital video camera. The kinematics of the particles motion wasanalyzed numerically. The dimensionless Magnus force coefficient, the Reynolds number Re and spin parameter ? (ratio of peripheral sphere velocity and translational velocity) were evaluated from the time series of the particle coordinates and its angle of rotation. The Magnus force was determined as a function of the Reynolds number and spin parameter for 3000 < Re < 42000 and 0.1 < ? <7. The results were compared with results from literature and overall data were fitted by a simple function valid for 0.5 < Re < 140000 and 0.1 < ? <10.
Keywords
Magnus forcesmooth spherical particleparticle rotationReynolds numbersexperimental investigation
The result's identifiers
Result code in IS VaVaI
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Experimental investigation of Magnus force acting on smooth sphere at high Reynolds numbers
Original language description
The paper describes the results of experimental research dealing with rotating smooth spherical particles moving quasi-steadily in calm water. The motion of the particles was recorded by a digital video camera. The kinematics of the particles motion wasanalyzed numerically. The dimensionless Magnus force coefficient, the Reynolds number Re and spin parameter ? (ratio of peripheral sphere velocity and translational velocity) were evaluated from the time series of the particle coordinates and its angle of rotation. The Magnus force was determined as a function of the Reynolds number and spin parameter for 3000 < Re < 42000 and 0.1 < ? <7. The results were compared with results from literature and overall data were fitted by a simple function valid for 0.5 < Re < 140000 and 0.1 < ? <10.
Czech name
Experimentální výzkum Magnusovy síly působící na hladkou kouli při vysokých Reynoldsových číslech
Czech description
Článek popisuje výsledky pokusů s rotující hladkou kulovou částicí při kvazi-stabilním pohybu v klidné vodě. Pohyb částice byl zaznamenán digitální videokamerou a kinematické parametry pohybu částice numericky analyzovány. Bezrozměrný součinitel Magnusovy síly, Reynoldsovo číslo a spin parametr ? (poměr obvodové rychlosti rotující částice a její translační rychlosti) byly vyhodnoceny z časových řad souřadnic a úhlů rotace částice. Magnusova síla byla určena v závislosti na Reynoldsově čísle a spin parametru pro oblast 3000 < Re < 42000 a 0,1 < ? <7. Výsledky byly porovnány s literárními údaji a data byly aproximovány jednoduchou funkcí platnou pro oblast 0,5 < Re < 140000 a 0,1 < ? <10.
Classification
Type
D - Article in proceedings
CEP classification
BK - Liquid mechanics
OECD FORD branch
—
Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Colloquium FLUID DYNAMICS 2008, Proceedings
ISBN
978-80-87012-14-7
ISSN
—
e-ISSN
—
Number of pages
11
Pages from-to
—
Publisher name
Ústav termomechaniky AV ČR v. v. i
Place of publication
Praha
Event location
Praha
Event date
Oct 22, 2008
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
—
Basic information
Result type
D - Article in proceedings
CEP
BK - Liquid mechanics
Year of implementation
2008