Searched for: author%3A%22Tang%2C+J.%22
(1 - 20 of 20)
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Lyu, X. (author), Voskov, D.V. (author), Tang, J. (author), Rossen, W.R. (author)
Foam injection is a promising enhanced-oil-recovery (EOR) technology that significantly improves the sweep efficiency of gas injection. Simulation of foam/oil displacement in reservoirs is an expensive process for conventional simulation because of the strongly nonlinear physics, such as multiphase flow and transport with oil/foam...
journal article 2021
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Tang, J. (author)
Foam has unique microstructure in pore networks and reduces gas mobility significantly, which improves considerably the sweep efficiency of gas injection. Foam injection is thus regarded as a promising enhanced oil recovery (EOR) technology. One key to success of foam EOR is foam stability in presence of oil. This thesis seeks to understand...
doctoral thesis 2019
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Tang, J. (author), Smit, Michiel (author), Vincent-Bonnieu, S.Y.F. (author), Rossen, W.R. (author)
A new capillary number (N <sub>ca</sub> ) definition is proposed for 2-D etched micromodels. We derive the new definition from a force balance on a nonwetting ganglion trapped by capillarity. It incorporates the impact of pore microstructure on mobilization. The geometrical factors introduced can be estimated directly from image analysis of...
journal article 2019
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Tang, J. (author), Vincent-Bonnieu, S.Y.F. (author), Rossen, W.R. (author)
We present a CT coreflood study of foam, both pre-generated and generated in-situ, displacing oil, as a function of oil type and saturation. Foam generation and propagation are reflected through sectional pressure measurements. Dual-energy CT imaging monitors in-time phase saturations. With an oil less harmful to foam (hexadecane), injection...
journal article 2019
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Tang, J. (author), Castañeda, Pablo (author), Marchesin, Dan (author), Rossen, W.R. (author)
Understanding the interplay of foam and non-aqueous phases in porous media is key to improving the design of foam for enhanced oil recovery and remediation of aquifers and soils. A widely used implicit-texture foam model predicts phenomena analogous to cusp catastrophe theory: the surface describing foam apparent viscosity as a function of...
journal article 2019
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Tang, J. (author), Avallone, F. (author), Bontempo, R. (author), van Bussel, G.J.W. (author), Manna, M. (author)
This paper reports an experimental investigation on the effect of the duct geometry on the aerodynamic performance of an aerofoil shaped ducted wind turbine (DWT). The tested two-dimensional model is composed of an aerofoil equipped with pressure taps and a uniform porous screen. The experimental setup is based on the assumption that the duct...
journal article 2018
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Tang, J. (author), van Bussel, G.J.W. (author)
A new high-lift aerofoil modification for the duct has been developed and will be experimentally tested in a small wind tunnel. Aerofoils for such wind tunnel ducts typically operate in the low Reynolds number range from 2 × 105 to 6 × 105. The effect of a duct and of rotor on power and pressure drop were considered separately in previous...
abstract 2017
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Tang, J. (author), Avallone, F. (author), van Bussel, G.J.W. (author)
This study presents an experimental investigation on a diffuser augmented wind turbine (DAWT). A screen mesh is used to simulate the energy extraction mechanisms of a wind turbine in experiment. Different screen porosities corresponding to different turbine loading coefficients are tested. Measurements of the axial force and of the velocity...
journal article 2016
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Xiong, W. (author), Tang, J. (author), Zhu, G. (author), Han, N. (author), Schlangen, E. (author), Dong, B. (author), Wang, X. (author), Xing, F. (author)
Steel is prone to corrosion induced by chloride ions, which is a serious threat to reinforced concrete structures, especially in marine environments. In this work, we report a novel capsule-based selfrecovery system that utilizes chloride ions as a trigger. These capsules, which are functionalized via a smart response to chloride ions, are...
journal article 2015
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Hu, Yihuai. (author), Tang, J. (author), Xue, S. (author), liu, S. (author)
journal article 2015
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Tang, J. (author)
The majority of Integrated Circuit (IC) devices are encapsulated in wire-bonded plastic IC packages. Epoxy molding compound is used as the encapsulation material and gold was used as the bonding wire material. However, the increase of gold material price from 400 USD/ounce in year 2005 to 1400 USD/ounce in year 2013 results in a major cost issue...
doctoral thesis 2014
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Tang, J. (author)
master thesis 2014
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Zhu, G. (author), Zhou, Y. (author), Wu, Z. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author)
The microcapsules of epoxy E-51 resin encapsulated by cured itself were prepared by interfacial curing reaction, in which ethylenediamine (EDA) was employed as curing agent and sulfonated copolymer of styrene and maleic anhydride (SMA) as emulsifying agent. It’s found the morphology of microcapsules strongly depend on reaction time and EDA...
conference paper 2013
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Xiong, W. (author), Zhu, G. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author), Schlangen, H.E.J.G. (author)
Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene...
conference paper 2013
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Zhu, G. (author), Wu, Z. (author), Zhou, Y. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author)
Epoxy E-51/UF resin microcapsules were prepared by traditional two-stepped in situ polymerization method and processing parameters affecting the final microcapsules’ shape and size were carefully studied in the aim to obtain microcapsule with ideally spherical shape and uniform size. It’s found the polycarboxylate surfactant of SMA (styrene...
conference paper 2013
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Zhu, G. (author), Lü, L. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author)
For epoxy microcapsules embedded in concrete as mechanic-triggered self-healing adhesive, globular shape with uniform size is the basic requirement to ensure the solid shell broken and the liquid core released at a designed stress. In this paper, monodispersed melamine–formaldehyde (MF) resin-walled epoxy E-51 microcapsules were successfully...
conference paper 2013
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Xiong, W. (author), Zhu, G. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author), Schlangen, H.E.J.G. (author)
Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene...
conference paper 2013
document
Tang, J. (author), Gruber, D. (author), Schelen, J.B.J. (author), Funke, H.J. (author), Beenakker, C.I.M. (author)
Decapsulation of a SOT23 semiconductor package with 23 um copper wire bonds is conducted with an especially designed microwave induced plasma system. It is found that a 30%-60% CF4 addition in the O2/CF4 etchant gas results in high molding compound etching rate. Si3N4 overetching which is encountered in plasma decapsulation is solved by an...
journal article 2012
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Tang, J. (author), Schelen, J.B.J. (author), Beenakker, C.I.M. (author)
Plastic integrated circuit packages with copper wire bonds are decapsulated by a Microwave Induced Plasma system. Improvements on microwave coupling of the system are achieved by frequency tuning and antenna modification. Plasmas with a mixture of O2 and CF4 showed a high etching rate around 2 mm3/min. The role of O2 and CF4 in etching molding...
journal article 2011
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Turunen-Saaresti, T. (author), Tang, J. (author), Larjola, J. (author)
Polynomial functions are generated to describe real gas properties in computational fluid dynamics (CFD). Two-variable relative least square fitting is applied. In this way the real gas model can be generated fast and easily and the computational time requested is small and precision of the function can be easily adjusted. In this paper this...
conference paper 2006
Searched for: author%3A%22Tang%2C+J.%22
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