Results 11 to 20 of about 1,824,023 (309)

Experimental analysis of the pressure–velocity correlations of external unsteady flow over rocket launchers [PDF]

open access: yes, 2013
Based on simultaneous wall pressure and velocity measurements, the aerodynamic load of a launcher body model is investigated. Two different configurations are considered in order to study the influence of geometrical artifacts on the after body flow and ...
DRUAULT, Philippe   +7 more
core   +1 more source

A study on unsteady fluid-dynamic force characteristics of a pitching wing with leading edge protuberance

open access: yesNihon Kikai Gakkai ronbunshu, 2023
We conducted a study on unsteady characteristics of fluid-dynamic force acting on a pitching NACA0012 wing with linear leading edge (Baseline) and with leading edge protuberance (Wave) in low Reynolds number region (Re =4.32×104) for the development of ...
Kazuki DOI   +3 more
doaj   +1 more source

Non-linear unsteady aerodynamic model for insect-like flapping wings in the hover. Part 1: Methodology and analysis [PDF]

open access: yes, 2006
The essence of this two-part paper is the analytical, aerodynamic modelling of insect-like flapping wings in the hover for microair vehicle applications.
Knowles, Kevin   +2 more
core   +1 more source

Clarification of Unsteady Fluid Forces Acting on Limbs in Swimming Using an Underwater Robot Arm

open access: yesJournal of Fluid Science and Technology, 2012
The objective of this study was to clarify the unsteady characteristics of the fluid force acting on limbs during swimming. For this objective, an underwater robot arm, which has five degrees-of-freedom in order to perform the various complicated limb ...
Motomu NAKASHIMA, Akemi TAKAHASHI
doaj   +1 more source

The onset of instability in unsteady boundary-layer separation [PDF]

open access: yes, 1996
The process of unsteady two-dimensional boundary-layer separation at high Reynolds number is considered. Solutions of the unsteady non-interactive boundary-layer equations are known to develop a generic separation singularity in regions where the ...
K. W. Cassel   +5 more
core   +1 more source

Effect of Virtual Mass Force on the Mixed Transport Process in a Multiphase Rotodynamic Pump

open access: yesAdvances in Mechanical Engineering, 2014
To explore the effect of virtual mass force, the unsteady two-phase flow in a multiphase rotodynamic pump impeller was numerically simulated, where the inlet gas void fraction was 4.9%, 14.9%, and 25.2%, respectively.
Zhiyi Yu   +3 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

Experimental validation of unsteady models for fluid structure interaction: Application to yacht sails and rigs [PDF]

open access: yes, 2012
• We present full scale measurements on a yacht sailing upwind in moderate head swell • We highlight the unsteadiness of the loads : peaks may be twice the mean value • The dynamic behavior differs from the steady state : hysteresis loop • Experimental ...
AUGIER, Benoit   +3 more
core   +1 more source

Numerical analysis of condensation effects on final-stage rotor-blade rows in low-pressure steam turbine

open access: yesJournal of Fluid Science and Technology, 2017
The causal relationship between unsteady forces of wet-steam flows on rotor-blade rows and the steam condensation in low pressure steam turbines is still one of unresolved issues.
Hironori MIYAZAWA   +2 more
doaj   +1 more source

Unsteady Force and Pressure Measurements [PDF]

open access: yesAnnual Review of Fluid Mechanics, 1971
The solution to problems of the measurements of unsteady forces and pressures in fluid mechanics is discussed, particularly regarding the selection of measurement system. A number of examples of solution processes to various measurement problems are outlined.
openaire   +1 more source

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