Results 61 to 70 of about 40,877 (227)

Impact of Uncertain Parameters on Navier–Stokes Equations With Heat Transfer via Polynomial Chaos Expansion

International Journal for Numerical Methods in Fluids, EarlyView.
This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime, B. Després, M. A. Puscas, C. Fiorini   +3 more
wiley   +1 more source

Aerodynamic Damping Prediction for Turbomachinery Based on Fluid-Structure Interaction with Modal Excitation

Applied Sciences, 2019
Aerodynamic damping predictions are critical when analyzing aeroelastic stability. A novel method has been developed to predict aerodynamic damping by employing two single time-domain simulations, specifically, one with the blade impulsed naturally in a ...
Jianxiong Li, Xiaodong Yang, Anping Hou, Yingxiu Chen, Manlu Li   +4 more
doaj   +1 more source

On the fundamental resonant mode of inhomogeneous soil deposits [PDF]

, 2020
The problem of estimating seismic ground deformation is central to state-of-practice procedures of designing and maintaining infrastructure in earthquake-prone areas.
Asimaki, Domniki, Garcia-Suarez, Joaquin
core  

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading

Shock and Vibration, 1996
This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the ...
B.C. Huang, K.M. Lam, A.Y.T. Leung, Y.K. Cheung   +3 more
doaj   +1 more source

Unusual properties of adiabatic invariance in a billiard model related to the adiabatic Piston problem [PDF]

Theoretical and Applied Mechanics
We describe the point spectra of some dissipative version of the celebrated “Rayleigh loaded string”, an elastic string of finite length carrying a number n ⩾ 1 of equally spaced, equal point masses, which is a basic model that exhibits a band structure ...
Skinner Joshua, Neishtadt Anatoly
doaj   +1 more source

Modeling seismic wave propagation and amplification in 1D/2D/3D linear and nonlinear unbounded media

, 2010
To analyze seismic wave propagation in geological structures, it is possible to consider various numerical approaches: the finite difference method, the spectral element method, the boundary element method, the finite element method, the finite volume ...
Bard P. Y., Bard P. Y., Bonnet M., Bonnet M., Bouchon M., Chaljub E., Chopra A. K., Dobry R., Frankel A., Hughes T. J. R., J. F. Semblat, Komatitsch D., Manolis G. D., Sanchez-Sesma F. J., Sanchez-Sesma F. J., Semblat J. F., Sommerville P. G., Sánchez-Sesma F. J., Wirgin A., Wolf J. P.   +19 more
core   +6 more sources

Moist convection and radiative cooling: Dynamical response and scaling

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The mechanism that sets the updraught velocities in deep convective clouds is studied here using cloud‐resolving model simulations in radiative–convective equilibrium. We show that, for simulations with vastly different rates of radiative cooling and surface temperatures, the buoyancy in clouds remains remarkably constant (histogram shown here).
Lokahith Agasthya, Caroline Muller
wiley   +1 more source

When tiny convective spread affects a midlatitude jet: Spread sequence

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We investigate spread evolution by mesoscale convection from tiny initial condition uncertainty during a real event. There is significant variation among the systems in their propensity to interact with the jet stream, whereby variability in one system (due to convective and long‐wave radiative heating tendencies) tightly relates to Rossby‐like ...
Edward Groot, Michael Riemer
wiley   +1 more source

Point spectra and normal modes of the Rayleigh loaded string with damping [PDF]

Theoretical and Applied Mechanics
We describe the point spectra of some dissipative version of the celebrated “Rayleigh loaded string”, an elastic string of finite length carrying a number n ≥ 1 of equally spaced, equal point masses, which is a basic model that exhibits a band ...
Fassò Francesco, Galasso Sara, Ponno Antonio   +2 more
doaj   +1 more source