Results 21 to 30 of about 301 (127)
Unsteady Lifting Surface Theory for a Rotating Transonic Cascade of Swept Blades [PDF]
Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, 1991 A lifting surface theory is developed to predict the unsteady three-dimensional aerodynamic characteristics for a rotating transonic annular cascade of swept blades. An improved method is used to solve the integral equation for the unsteady blade loading.
Hidekazu Kodama, Masanobu Namba
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Three dimensional flutter analysis and wind-tunnel experiments of slender webs in cross flow
Nihon Kikai Gakkai ronbunshu, 2017 This paper presents a three dimensional flutter analysis of slender webs under tension in cross flow. In the flutter analysis, Doublet-point method based on the unsteady lifting surface theory is used to calculate unsteady fluid force acting on the web ...
Keiichi HIROAKI +2 more
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Nihon Kikai Gakkai ronbunshu, 2016 This paper deals with the flutter analysis of a rectangular sheet supported by a wire in axial flow. In the flutter analysis, Doublet-Point Method based on unsteady lifting surface theory is used to calculate the unsteady fluid force acting on the sheet ...
Keiichi HIROAKI, Masahiro WATANABE
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Nihon Kikai Gakkai ronbunshu, 2016 This paper deals with the flutter analysis of a rectangular sheet flexibly supported by a wire at the leading edge of the sheet subjected to axial fluid flow.
Keiichi HIROAKI, Masahiro WATANABE
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Transient Temperature Effects on the Aerothermoelastic Response of a Simple Wing
Aerospace, 2018 Aerothermoelasticity plays a vital role in the design and optimisation of hypersonic aircraft. Furthermore, the transient and nonlinear effects of the harsh thermal and aerodynamic environment a lifting surface is in cannot be ignored.
Gareth A. Vio +2 more
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An Unsteady Lifting Surface Theory for Ducted Fan Blades [PDF]
Journal of Turbomachinery, 1991 A frequency domain lifting surface theory is developed to predict the unsteady aerodynamic pressure loads on oscillating blades of a ducted subsonic fan. The steady baseline flow as observed in the rotating frame of reference is the helical flow dictated by the forward flight speed and the rotational speed of the fan.
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Instability mechanism of flutter generated on a rectangular sheet
Nihon Kikai Gakkai ronbunshu, 2018 An instability mechanism of flutter generated on a rectangular flexible sheet in an axial fluid flow is investigated through the energy-transfer quantifications.
Keiichi HIROAKI, Masahiro WATANABE
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NUMERICAL MODELING AND DYNAMIC SIMULATIONS OF NONLINEAR AEROTHERMOELASTIC OF A DOUBLE-WEDGE LIFTING SURFACE [PDF]
Journal of Engineering Science and Technology, 2008 The design of the re-entry space vehicles and high-speed aircrafts requires special attention to the nonlinear thermoelastic and aerodynamic instabilities of their structural components.
ARIF A. EBRAHEEM AL-QASSAR
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A new drag and lift correlation for spherocylinders from fully resolved Immersed Boundary Method
AIChE Journal, EarlyView.Abstract Many industrial processes deal with non‐spherical particles, e.g., mineral mining and biomass conversion. It is crucial to understand the particles' hydrodynamics to control and optimize these processes. To extend the current state‐of‐the‐art from arrays of spherical particles to spherocylindrical particles, we performed extensive particle ...
A. H. Huijgen +4 more
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Advanced Intelligent Systems, EarlyView.System identification and particle image velocimetry reveal how a modular robotic fish changes thrust physics across gaits. A traveling‐wave, fish‐like motion draws thrust from resistive drag, while a resonant standing‐wave motion is driven by reactive pressure.
Donghao Li +4 more
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