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Author

Chun-Mei Wu

Other affiliations: University of Toronto
Bio: Chun-Mei Wu is an academic researcher from Chongqing University. The author has contributed to research in topics: Reynolds number & Prandtl number. The author has an hindex of 12, co-authored 53 publications receiving 429 citations. Previous affiliations of Chun-Mei Wu include University of Toronto.

Papers published on a yearly basis

Papers
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Journal ArticleDOI
TL;DR: In this paper, a series of three-dimensional numerical simulations on the thermocapillary-buoyancy flow with Soret effect in a shallow annular pool which was filled with the n-decane/n-hexane mixture with an initial mass fraction of 50%.

30 citations

Journal ArticleDOI
Jie-Chao Chen1, You-Rong Li1, Jia-Jia Yu1, Li Zhang1, Chun-Mei Wu1 
TL;DR: In this article, a series of three-dimensional numerical simulations for thermal-solutal capillary convection in an annular pool subjected to simultaneous radial temperature and solutal concentration gradients were conducted.

22 citations

Journal ArticleDOI
TL;DR: The wetting hypothesis indicates that γ(SV) at wetting, x, is equalγ(LV), the surface tension of the liquid-vapour interface, and it is predicted that adsorption lowers γSV from the surface pressure of the substrate in the absence of advertisersorption, to that at the wetting condition.
Abstract: We use the Zeta adsorption isotherm and propose a method for determining the conditions at which an adsorbed vapour becomes an adsorbed liquid. This isotherm does not have a singularity when vapour phase pressure, PV, is equal to the saturation-vapour pressure, Ps, and is empirically supported by earlier studies for PV < Ps. We illustrate the method using water and three hydrocarbon vapours adsorbing on silica. When the Zeta isotherm is combined with Gibbsian thermodynamics, an expression for γSV, the surface tension of the solid–vapour interface as a function of xV(≡PV/Ps) is obtained, and it is predicted that adsorption lowers γSV from the surface tension of the substrate in the absence of adsorption, γS0, to that at the wetting condition. The wetting hypothesis indicates that γSV at wetting, xVw, is equal γLV, the surface tension of the liquid–vapour interface. For water vapour adsorbing on silica, adsorption lowers γSV to γLV at xVw equal unity, but for the hydrocarbons heptane, octane and toluene adsorbing on silica xVw is found to be 1.40, 1.30 and 1.32 respectively.

21 citations

Journal ArticleDOI
TL;DR: In this paper, an experimental investigation was conducted to understand the effects of crystal and crucible rotations on the thermocapillary convection in a Czochralski configuration.

21 citations

Journal ArticleDOI
TL;DR: In this article, a series of three-dimensional numerical simulations on Rayleigh-Benard convection of cold water near its density maximum in a cylindrical container of aspect ratio 2 were carried out by using the finite volume approach.

20 citations


Cited by
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Journal ArticleDOI
TL;DR: The present isotherm is unified in contrast to existing hybrid models and successfully applied to numerous literature data concerning the adsorption of water on microporous carbon and aluminophosphate molecular sieves.
Abstract: Based on the biochemical theory of multiple ligand-receptor complexes (Klotz (1946)) a sigmoidal proceeding adsorption isotherm is derived. The special case of an arbitrarily large number of equal interaction sites and a separate one yields an equation which corresponds to the ζ-isotherm, disparately derived by Ward et al. (2007) for surface tension of solid-fluid interfaces. From the mathematical point of view it is analogous to the BET-isotherm for a limited number of adsorption layers (1938). It is shown that the isotherm maps type IV and V isotherms. The isotherm is compared with others including the type IV isotherm of Do and Do (2009). The present isotherm is unified in contrast to existing hybrid models. It is successfully applied to numerous literature data concerning the adsorption of water on microporous carbon and aluminophosphate molecular sieves.

108 citations

01 Nov 2001
TL;DR: In this article, the flow in a completely filled rotating cylinder driven by the counter-rotation of the top endwall is investigated both numerically and experimentally, and a supercritical symmetry-breaking Hopf bifurcation to a rotating wave state results.
Abstract: The flow in a completely filled rotating cylinder driven by the counter-rotation of the top endwall is investigated both numerically and experimentally. The basic state of this system is steady and axisymmetric, but has a rich structure in the radial and axial directions. The most striking feature, when the counter-rotation is sufficiently large, is the separation of the Ekman layer on the top endwall, producing a free shear layer that separates regions of flow with opposite senses of azimuthal velocity. This shear layer is unstable to azimuthal disturbances and a supercritical symmetry-breaking Hopf bifurcation to a rotating wave state results. For height-to-radius ratio of 0.5 and Reynolds number (based on cylinder radius and base rotation) of 1000, rotating waves with azimuthal wavenumbers 4 and 5 co-exist and are stable over an extensive range of the ratio of top to base rotation. Mixed modes and period doublings are also found, and a bifurcation diagram is determined. The agreement between the Navier–Stokes computations and the experimental measurements is excellent. The simulations not only capture the qualitative features of the multiple states observed in the laboratory, but also quantitatively replicate the parameter values over which they are stable, and produce accurate precession frequencies of the various rotating waves.

56 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of heterogeneity level, Marangoni number, thermal Rayleigh number, buoyancy ratio and nanoparticle volume fraction on the fluid flow as well as on rates of heat and mass transfer was investigated with the compact high order finite volume method.

47 citations

Journal ArticleDOI
TL;DR: It was found that both the density inversion and the presence of nanoparticles play a significant role in the flow field structure, heat transfer characteristics and entropy generation and the Boussinesq approximation gave rise to the higher average heat transfer rate and entropygeneration as compared to non-Boussineq approximation.

39 citations

Journal ArticleDOI
TL;DR: A review of the literature on the factors affecting microscale evaporation, which include the properties and temperature of the solid substrate, vapor transport in the gas domain, microconvection, and engineered surface features, is presented in this paper.

36 citations