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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Qualitative study of two types of kinetic equations
动力学方程 定性研究 弗拉索夫方程
2023/4/18
In recent years, the study of kinetic equations has attracted much attention because it involves many important scientific phenomena and fields of science, such as nuclear reactor diffusion phenomena,...
Powered lower limb prosthetics hold promise for improving the mobility of amputees, but errors in the technology may also cause some users to stumble or fall. New research examines exactly what happen...
Some open problems and research directions in the mathematical study of uid dynamics.
Some open problems research directions in the mathematical study uid dynamics.
2014/4/4
This is an essay in the literal sense: an attempt. As such, it does not con-form to the norm of scienti c objectivity but attempts to describe a point of view. In it I describe a number of questions c...
A Comparitive Study On The Perfermance Of The InSAR Phase Filtering Approches In The Spatial And The Wavelet Domains
WInPF Lee filter FAMM WMF Wavelet domain Interferogram SAR
2014/4/22
In this paper, we studied and tested different filtering approaches of the SAR interferograms in the spatial and wavelet domains. In the spatial domain, we applied the classic Lee filter and the Weigh...
Viscous coalescence of droplets -- a Lattice Boltzmann study
Viscous coalescence of droplets Lattice Boltzmann study Fluid Dynamics
2012/5/29
The coalescence of two resting liquid droplets in a saturated vapor phase is investigated by Lattice Boltzmann simulations in two and three dimensions. We find that, in the viscous regime, the bridge ...
A Parametric Study on the Starting Transients of a Vacuum Ejector-Diffuser System
Parametric Starting Transients Vacuum Ejector-Diffuser System Fluid Dynamics
2012/4/24
In this endeavor, the transients persisting in a vacuum ejector system (put reference of my old paper) is studied by numerically simulating the flow field, and experimentally validating the simulated ...
Experimental and numerical study of mean zonal flows generated by librations of a rotating spherical cavity
librations rotating spherical cavity
2011/9/7
We study both experimentally and numerically the steady zonal flow generated by longitudinal librations of a spherical rotating container. This study follows the recent weakly nonlinear analysis of Bu...
Nonlinear study of the dynamic behavior of a string-beam coupled system under combined excitation
1:1 internal resonance String-beam Multiple scales Chaotic response Stability
2012/2/28
In this paper, the nonlinear dynamic behavior of a string-beam coupled system subjected to external, parametric and tuned excitations is presented. The governing equations of motion are obtained for t...
Shock tube study of n-decane ignition at low pressures
Ignition delay time n-Decane Heated shock tube
2012/2/24
Ignition delay times for n-decane/O_2/Ar mixtures were measured behind reflected shock waves using endwall pressure and CH* emission measurements in a heated shock tube. The initial postshock conditio...
A study on wrinkling characteristics and dynamic mechanical behavior of membrane
Space membrane structure Wrinkle Vibration
2012/2/24
An eigenvalue method considering the membrane vibration of wrinkling out-of-plane deformation is introduced, and the stress distributing rule in membrane wrinkled area is analyzed. A dynamic analytica...
Parametric study on supersonic flutter of angle-ply laminated plates using shear deformable finite element method
Panel flutter Angle-ply laminates Fiber orientation Flow yaw angle Length-to-thickness ratio
2012/2/29
The influence of fiber orientation, flow yaw angle and length-to-thickness ratio on flutter characteristics of angle-ply laminated plates in supersonic flow is studied by finite element approach. The ...
Study on fluid-structure interaction in liquid oxygen feeding pipe systems using finite volume method
Fluid-structure interaction Liquid oxygen Finite volume method
2012/2/29
The fluid-structure interaction may occur in space launch vehicles, which would lead to bad performance of vehicles, damage equipments on vehicles, or even affect astronauts' health. In this paper, an...
Numerical study on three-dimensional flow field of continuously rotating detonation in a toroidal chamber
continuously rotating detonation three-dimensional flow field structure numerical study detonation parameters deficit effects of wall geometries
2012/2/24
Gaseous detonation propagating in a toroidal chamber was numerically studied for hydrogen/oxygen/ni-trogen mixtures. The numerical method used is based on the three-dimensional Euler equations with de...
A Study of Pressure Distribution of A Slider Bearing Lubricated with Powell-Eyring Fluid
Slider bearing Non-newtonian fluids Perturbation analysis Powell-eyring model Lubrication
2009/10/12
A slider bearing consisting of connected surfaces with Powell-Eyring fluid as a lubricant is analyzed in the present study. A Powell-Eyring model has been used as a non-Newtonian lubricant in a slider...
A study on modified Szabo’s wave equation modeling of frequency-dependent dissipation in ultrasonic medical imaging
modified Szabo’s wave equation frequency-dependent dissipation ultrasonic medical imaging
2010/10/22
The modified Szabo’s wave equation, in which the positive fractional derivative has first been used, is a new model to describe the frequency-dependent dissipative ultrasonic wave
propagation through...