54 Result(s)
within
English
Engineering
Classical and Continuum Physics
Engineering Fluid Dynamics
Theoretical and Applied Mechanics
Yi**ang Chen
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Article
Reynolds-stress modelling of turbulent rotating flows
The present analysis shows that the EVM can not reflect the turbulence physics in non-inertial frame. The effects of Coriolis force on turbulence is embodied naturally in the Reynolds-stress transport equation...
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Article
Recent progress in nonlinear eddy-viscosity turbulence modeling
This article presents recent progresses in turbulence modeling in the Unit for Turbulence Simulation in the Department of Engineering Mechanics at Tsinghua University. The main contents include: compact Non-Li...
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Article
Study on micronozzle flow and propulsion performance using DSMC and continuum methods
In this paper, both DSMC and Navier–Stokes computational approaches were applied to study micronozzle flow. The effects of inlet condition, wall boundary condition, Reynolds number, micronozzle geometry and Kn...
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Article
Simulation of bluff body stabilized flows with hybrid RANS and PDF method
The motivation of this study is to investigate the turbulence–chemistry interactions by using probability density function (PDF) method. A consistent hybrid Reynolds Averaged Navier–Stokes (RANS)/PDF method is...
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Article
Exact size-dependent connections between effective moduli of fibrous piezoelectric nanocomposites with interface effects
We consider the macroscopic behavior of two-phase fibrous piezoelectric composites. The fibers are of circular cross-section with the same radius. Along the interfaces between the fibers and the matrix we cons...
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Article
A fast and practical method to pack spheres for mesh generation
Sphere packing is an attractive way to generate high quality mesh. Several algorithms have been proposed in this topic, however these algorithms are not sufficiently fast for large scale problems. The paper pr...
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Article
Numerical simulation on micromixer based on synthetic jet
This paper studied a concept of micromixer with a synthetic jet placed at the bottom of a rectangular channel. Due to periodic ejections from and suctions into the channel, the fluids are mixed effectively. To...
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Article
The effect of aneurismal-wall mechanical properties on patient-specific hemodynamic simulations: two clinical case reports
Hemodynamic factors such as the wall shear stress play an important role in the pathogenesis and treatment of cerebral aneurysms. In present study, we apply computational fluid–structure interaction analyses o...
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Characterization of cuttlebone for a biomimetic design of cellular structures
Cuttlebone is a natural material possessing the multifunctional properties of high porosity, high flexural stiffness and compressive strength, making it a fine example of design optimization of cellular struct...
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Delayed feedback control experiments on some flexible structures
In recent decades, studies on delayed system dynamics have attracted increasing attention and advances have been achieved in stability, nonlinearity, delay identification, delay elimination and application. Ho...
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Article
Research of air-cushion isolation effects on high arch dam reservoir
A three-dimensional (3D) finite element model of air-cushion isolated arch dam is presented with the nonlinear gas-liquid-solid multi-field dynamic coupling effect taken into account. In this model, the displa...
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Article
A new method of quality improvement for quadrilateral mesh based on small polygon reconnection
In this paper, a new method of topological cleanup for quadrilateral mesh is presented. The method first selects a patch of mesh around an irregular node. It then seeks the best connection of the selected patc...
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Article
Application of new double side approach method to the solution of super-elliptical plate problems
The new double side approach method combining the mathematical programming and the subdomain method in the method of weighted residual is presented in this article. Under the validation of maximum principle, a...
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Article
An iterative algorithm for analysis of coupled structural-acoustic systems subject to random excitations
This paper analyzes the random response of structural-acoustic coupled systems. Most existing works on coupled structural-acoustic analysis are limited to systems under deterministic excitations due to high co...
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Article
Simulation of vortex shedding behind a bluff body flame stabilizer using a hybrid U-RANS/PDF method
The present study aims at the investigation of the effects of turbulence-chemistry interaction on combustion instabilities using a probability density function (PDF) method. The instantaneous quantities in the...
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Article
Effects of high-order surface stress on buckling and resonance behavior of nanowires
A theoretical framework, accounting for high-order surface stress, is implemented in a continuum mechanics model based on the Euler-Bernoulli theory of beams and columns to simulate the buckling and resonance ...
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Article
A review on the mechanical methods for evaluating coating adhesion
Coatings have been applied widely in aerospace, biomedical, electronic, and many other industries. The performance of a coating is dictated by the adhesion between the coating and the underlying substrate. Thu...
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Article
A mathematical framework of high-order surface stresses in three-dimensional configurations
The mathematical behavior of a curved interface between two different solid phases with surface or interface stress effects is often described by the generalized Young–Laplace (YL) equations. The generalized Y...
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Article
Low-thrust trajectory optimization in a full ephemeris model
The low-thrust trajectory optimization with complicated constraints must be considered in practical engineering. In most literature, this problem is simplified into a two-body model in which the spacecraft is ...
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Article
Molecular tagging techniques and their applications to the study of complex thermal flow phenomena
This review article reports the recent progress in the development of a new group of molecule-based flow diagnostic techniques, which include molecular tagging velocimetry (MTV) and molecular tagging thermometry ...
