Results 71 to 80 of about 4,435 (226)
Journal of Biomechanical Science and Engineering, 2018 Insect wings change its shape passively by the aerodynamic and inertial forces when flapping, which can greatly affect its aerodynamic performances. In order to confirm the importance of the fluid-structure interaction in flapping wing aerodynamics, we ...
Toshiyuki NAKATA, Ryusuke NODA, Hao LIU
doaj +1 more source
Mass Exchange Flow Process in Side Channel Pumps: Effects of Different Geometrical Parameters
Energy Science &Engineering, EarlyView.Figure 1 shows the Mass Flow Exchange (MFE) in the impeller at z = 7.5 × 10−3 m at 1.0 Q/QBEP, operating point for impeller scheme 1 (IMP 1), and impeller scheme 2 (IMP 2). The flow begins to exit the impeller at the outer radius and enters at the inner and central radii. IMP 1 exhibits more flow in and out compared to IMP 2. ABSTRACT The functionality
Desmond Appiah +5 more
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Energy Science &Engineering, EarlyView.This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi +5 more
wiley +1 more source
International Journal for Numerical Methods in Fluids, EarlyView.This study presents an efficient method to compute polymer stress‐tensor components in viscoelastic laminar jet flows using models such as Oldroyd‐B, Giesekus, PTT, and FENE. By assuming a stationary and parallel flow, the methodology significantly reduces computational cost.
Rafael de Lima Sterza +3 more
wiley +1 more source
Local Polynomial Regression and Filtering for a Versatile Mesh‐Free PDE Solver
International Journal for Numerical Methods in Fluids, EarlyView.A high‐order, mesh‐free finite difference method for solving differential equations is presented. Both derivative approximation and scheme stabilisation is carried out by parametric or non‐parametric local polynomial regression, making the resulting numerical method accurate, simple and versatile. Numerous numerical benchmark tests are investigated for
Alberto M. Gambaruto
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Effect of 3-Dimensional Airfoil Shape on Unsteady Fluid Forces in Pitching Motion
Journal of Fluid Science and Technology, 2010 A quasi-steady-state approach towards predicting the fluid forces acting on a hand under unsteady conditions yielded errors. The actual motion of a hand in swimming is obviously unsteady, and time-dependent fluid forces must be considered. The purpose of this study is to investigate the relationship between unsteady fluid forces and the vortex ...
Hiroaki HASEGAWA +2 more
openaire +3 more sources
Fast Calculation for the Flow and Heat Transfer of Tempered Fractional Maxwell Viscoelastic Fluid
International Journal for Numerical Methods in Fluids, EarlyView.This study develops a tempered fractional Maxwell model to simulate unsteady thermal flow in viscoelastic fluids, capturing key rheological behaviors. A fast SOE‐based algorithm is proposed to improve the computational efficiency of the numerical scheme. Results reveal how key parameters influence fluid motion and heat transfer, demonstrating the model'
Yi Liu, Mochen Jiang, Libo Feng
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Effect of 3-Dimensional Airfoil Shape in Pitching Motion on Unsteady Fluid Forces
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2008 In the present study, in order to investigate unsteady effects on propulsion during front crawl swimming, unsteady fluid forces acting on a discoid airfoil simulating a human hand and the vortical flow field were measured in the (sinusoidal) pitching motion for the wind tunnel test, because the motion of a hand in swimming is obviously unsteady.
Hiroaki HASEGAWA +2 more
openaire +2 more sources
CFD Analysis of Dual‐Layer PCM Roofs for Thermal Mitigation in Residential Buildings
Heat Transfer, EarlyView.ABSTRACT This study presents a computational fluid dynamics analysis of dual‐layer phase change material (PCM) roofs for passive cooling in residential buildings under the hot and humid climate of Bangladesh. A three‐dimensional transient model was developed in ANSYS Fluent using the enthalpy–porosity approach to simulate coupled heat conduction ...
Mohammad Junaid +6 more
wiley +1 more source
Journal of the Global Power and Propulsion Society, 2018 The blades of centrifugal compressors are exposed to unsteady forces during operation which can result in resonance response conditions and failures due to high cycle fatigue.
Degendorfer Carsten +3 more
doaj +1 more source