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| 1 | Performance of low-salinity water flooding for enhanced oil recovery improved by SiO_2 nanoparticles显示文摘Low-salinity water injection has been utilized as a promising method for oil recovery in recent years. Low-salinity water flooding changes the ion composition or brine salinity for improving oil recovery. Recently, the application of nanoparticles with low-salinity water flooding has shown remarkable results in enhanced oil recovery(EOR). Many studies have been performed on the effect of nanofluids on EOR mechanisms. Their results showed that nanofluids can improve oil recovery when used in low-salinity water flooding. In this work, the effects of injection of low-salinity water and low-salinity nanofluid(prepared by adding SiO_2 nanoparticles to low-salinity water) on oil recovery were investigated. At first, the effects of ions were investigated with equal concentrations in low-salinity water flooding. The experimental results showed that the monovalent ions had better performance than the divalent ions because of them having more negative zeta potential and less ionic strength. Also, low-salinity water flooding recovered 6.1% original oil in place(OOIP) more than the high-salinity flooding. Contact angle measurements demonstrated that low-salinity water could reduce the contact angle between oil and water. Then in the second stage, experiments were continued by adding SiO_2 nanoparticles to the K+ solution which had the highest oil recovery at the first stage. The experimental results illustrated that the addition of Si02 nanoparticles up to 0.05 wt% increased oil recovery by about 4% OOIP more than the low-salinity water flooding. | Tangestani Ebrahim Vafaie Sefti Mohsen Shadman Mohammad Mahdi Kazemi Tooseh Esmaeel Ahmadi Saeb | 2019 | Petroleum Science2019，16，2： | 5 |
| 2 | 竖直热壁冷却下降液膜瞬变传热及相界面波动显示文摘采用数值方法对恒热流密度竖直热壁表面自由下降液膜冷却流动过程进行瞬态研究,建立了简化为二维问题的物理模型和数学模型,选用RNG k-ε模型求解汽液两相湍流流动,基于VOF多相流模型结合自编程用户定义函数求解相变过程中的传热传质。得到了不同因素影响下,冷却降膜厚度在热壁不同位置的分布规律。结果显示,冷却降膜的流动过程中,其表面存在不同程度及类型的波动。热扰动会降低液膜相界面流动稳定性,提高液膜流量能够抑制液膜表面波动,两种影响因素对于液膜的流动稳定性是相互抑制的。核态沸腾发生时,液膜内汽泡的运动、变化会对液膜相界面波动产生显著影响。瞬态计算结果显示,不同工况下,降膜冷却传热过程中表面传热系数具有相同的变化趋势。液膜的热稳定性受到入口液流量及壁面热流密度的耦合影响。根据汽液两相流动及传热传质特性,分析了发生以上现象的原因。 | 黄娜 周云龙 李洪伟 高聚 Kambiz Vafai | 2017 | 中国电机工程学报2017，37，6： | 4 |
| 3 | Therapeutic applications of moloclonal antibodies 显示文摘 | Berger M Shankar V Vafai A | 2002 | Am J Med Sci2002，324，1： | 1 |
| 4 | Comparative study between parallel and counter flow configurations between air and falling film desiccant in the presence of nanoparticle suspensions显示文摘 | Ali A Vafai K Khaled A R A | 2003 | International Journal of Energy Research2003，27，8： | 1 |
| 5 | Po- tential application of single-layered graphene sheet as strain sensor 显示文摘 | SAKHAEE-POUR A AHMADIAN M T VAFAI A | 2008 | Solid State Communications2008，147，7： | 1 |
| 6 | Protein phosphatase 2A methylation:a link be-tween elevated plasma homocysteine and Alzheimer's Disease显示文摘 | Vafai S B Stock J B | | 0，，： | 1 |
| 7 | Analysis of heat and mass transfer between air and falling film in a cross flow configuration显示文摘 | Ali A Vafai K Khaled A R A | 2004 | International Journal of Heat and Mass Transfer2004，47，4： | 1 |
| 8 | Non-Darcy natural convection heat and mass transfer along a vertical permeable cylinder embedded in a porous medium显示文摘 | Hossain M.A Vafai K Khnefar K.M.N | | 0，，： | 1 |
| 9 | Convective flow and heat transfer in a channel containing multiple heated obstacles显示文摘 | YOUNG T J VAFAI K | 1998 | International Journal of Heat and Mass Transfer1998，41，21： | 1 |
| 10 | Analysis of flow and heat transfer in porous media imbedded inside various-shaped ducts显示文摘 | Haji-Sheilkh A Vafai K | 2004 | Heat Mass Transfer2004，47，89： | 1 |
| 11 | An experimental investigation of the thermal performance of an asymmetrical flat plate heat pipe 显示文摘 | Wang Y Vafai K | 2000 | International Journal of Heat and Mass Transfer2000，43，15： | 1 |
| 12 | Buoyancy-driven heat transfer enhance-ment in a two-dimensional enclosure utilizing nanofluids显示文摘 | K Khanafer K Vafai | | 0，，19： | 1 |
| 13 | Expression of varicell-zoster virus and herpes simplex virus in normal human trigeminal ganglia显示文摘 | Murray RS Wellish M | 1998 | Proc Natl Acad Sci USA1998，85，： | 1 |
| 14 | Development and investigation of three - phase model of the mushy zone for analysis of porosity formation in solidifying casting 显示文摘 | KUZNETSOV A V VAFAI K | 1995 | International Journal of Heat and Mass transfer1995，38，14： | 1 |
| 15 | Non-Darcy natural convection heat and mass transfer along a vertical permeable cylinder embedded in a porous medium 显示文摘 | Hossain M A Kambiz Vafai Khalil M N Khanafer | 1999 | International Journal of Thermal Sciences1999，38，10： | 1 |
| 16 | An experimental investigation of the thermal performance of an asymmetrical flat plate heat pipe 显示文摘 | Wang Y Vafai K | 2000 | International Journal ofHeatandMass Transfer2000，43，： | 1 |
| 17 | Analysis of variable porosity, thermal dispersion, and local thermal nonequilibrium on free surface flows through porous media 显示文摘 | ALAZMI B VAFAI K | 2004 | Journal of Heat Transfer2004，126，6： | 1 |
| 18 | On the departure from local thermal equilibrium in porous media due to a rapidly changing heat source: the Sparrow number 显示文摘 | Minkowycz W J Hail-Sheikh A Vafai K | 2009 | International Journal of Heat and Mass Transfer2009，42，： | 1 |
| 19 | Boundary and inertia effects on flow and heat transfer in porous media 显示文摘 | Vafai K Tien C L | 1981 | Int J Heat Mass Transfer1981，24，2： | 1 |
| 20 | Boosting immune response with a candidate VZV gly- coprotein subunit vaccine显示文摘 | VAFAI A | 1995 | Vaccine1995，13，14： | 1 |
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