Results 21 to 30 of about 71,863 (315)

Application of modified Navier-Stokes equations to determine the unsteady force effects of a heterogeneous liquid [PDF]

open access: yesEPJ Web of Conferences, 2019
The article is focused on calculating the force effects of a heterogeneous liquid on pipe walls. The solution is based on the concentration of solid particles. The base fluid is assumed to be incompressible.
Pochylý František   +2 more
doaj   +1 more source

Shape design for prescribing fluid force in unsteady viscous flow fields

open access: diamondThe Proceedings of Mechanical Engineering Congress, Japan, 2020
Tomoya Yamaguchi, Eiji KATAMINE
openalex   +2 more sources

An Experimental and Numerical Evaluation of the Aerodynamic Performance of a UAV Propeller Considering Pitch Motion

open access: yesDrones, 2023
Considering the vibration generated by a propeller-driven UAV or encountering gust, the propeller will perform a very complex follower motion. A pitch and rotating coupled motion is proposed in the present work that can take more complex unsteady ...
Zhitao Zhang   +3 more
doaj   +1 more source

Three dimensional flutter analysis of a rectangular sheet based on the unsteady lifting surface theory and wind-tunnel experiments

open access: yesNihon Kikai Gakkai ronbunshu, 2016
This paper presents a three-dimensional flutter analysis of a rectangular sheet in an axial fluid flow. The unsteady fluid force acting on the sheet surface is calculated using Doublet-point method based on the unsteady lifting surface theory.
Masahiro WATANABE   +4 more
doaj   +1 more source

The force on a bubble, drop, or particle in arbitrary time-dependent motion at small Reynolds number [PDF]

open access: yes, 1993
The hydrodynamic force on a body that undergoes translational acceleration in an unbounded fluid at low Reynolds number is considered. The results extend the prior analysis of Lovalenti and Brady [to appear in J. Fluid Mech.
Brady, John F., Lovalenti, Phillip M.
core   +1 more source

Characteristics of a self-excited vibration of a plate supported by air pressure (Influence of chamber volume and slit width on occurrence conditions of the self-excited vibration)

open access: yesNihon Kikai Gakkai ronbunshu, 2018
This paper presents experiments and an analysis of the self-excited vibration of a plate supported by air pressure. In the analysis, the unsteady fluid force acting on the plate is calculated based on the basic equation of a two-dimensional gap flow ...
Masakazu TAKEDA, Masahiro WATANABE
doaj   +1 more source

Circular cylindrical shell flutter analysis based on the unsteady lifting surface theory and experimental verification

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper deals with flutter analysis of a circular cylindrical shell based on the non-planar unsteady lifting surface theory. In this study, experiments are conducted with a cantilevered circular cylindrical shell subjected to inner fluid flow, and ...
Hiroya ITOH   +2 more
doaj   +1 more source

Unsteady nanofluid flow over a cone featuring mixed convection and variable viscosity

open access: yesHeliyon, 2023
This article addresses unsteady nanofluid flow over a cone with MHD and mixed convection effects. Effects of variable viscosity and viscous dissipation are also considered. The resulting system of equations is tackled through the Homotopy Analysis Method
Zubair Mustafa   +3 more
doaj   +1 more source

Flutter of a rectangular cylindrical shell subjected to inner fluid flow

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper deals with flutter experiments and analysis of a rectangular cylindrical shell based on the non-planar unsteady lifting surface theory. In this study, experiments are conducted with a cantilevered rectangular cylindrical shell subjected to ...
Hiroya ITOH   +2 more
doaj   +1 more source

Flutter analysis and wind-tunnel experiments of a flat plate suspended by wires

open access: yesNihon Kikai Gakkai ronbunshu, 2023
In the construction work, flat plates for building materials are transported by a suspension mechanism using wires in air flow. Then, a flutter could be caused to the suspended plates due to the interaction between plate motion and fluid flow.
Keiichi HIROAKI   +3 more
doaj   +1 more source

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