Analysis of non-stationary flow interaction with simple form objects
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Kuupäev
2019
Kättesaadav alates
Autorid
Tipans, I.
Viba, J.
Irbe, M.
Vutukuru, S.K.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The paper is devoted to the analysis of a non-stationary rigid body interaction in a fluid
flow. Initially, an approximate method for determining the forces due to fluid interaction with the
rigid body is offered. For this purpose, the plane movement of a mechanical system with an
infinite DOF (degrees of freedom) is reduced to 5 DOF motion: 3 DOF for the body and 2 DOF
for the areas of compression and vacuum in fluid flow. Differential equations of non-stationary
motion are formed by the laws of classical mechanics. The use of an approximate method has
been quantified by computer modelling. The average difference in results was found to be small
(< 5%). The analysis of the fluid (air) interaction is carried out for a rigid body of two simple
geometries - flat plate and diamond. The results obtained are used to refine the parameters of the
proposed approximate method that is addressed in the present study for fluid interaction with the
non-stationary rigid body. Theoretical results obtained in the final section are used in the analysis
of the movement of prismatic bodies in order to obtain energy from the fluid flow.
Kirjeldus
Article
Märksõnad
degree of freedom, energy, fluid interaction, mathematical modelling, flow parameters, rigid body, articles