ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

巻:
巻 22, 2019 巻 21, 2018 巻 20, 2017 巻 19, 2016 巻 18, 2015 巻 17, 2014 巻 16, 2013 巻 15, 2012 巻 14, 2011 巻 13, 2010 巻 12, 2009 巻 11, 2008 巻 10, 2007 巻 9, 2006 巻 8, 2005 巻 7, 2004 巻 6, 2003 巻 5, 2002 巻 4, 2001 巻 3, 2000 巻 2, 1999 巻 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v8.i3.10
pages 247-257

Two-Phase Flow Experiments in a Geocentrifuge and the Significance of Dynamic Capillary Pressure Effect

Oubbol Oung
Soil Investigation and Model Department, GeoDelft, P.O. Box 69; 2600AB Delft, The Netherlands
Seyed Majid Hassanizadeh
Department of Earth Sciences, Utrecht University
Adam Bezuijen
Soil Investigation and Model Department, GeoDelft, P.O. Box 69; 2600AB Delft, The Netherlands

要約

In recent years, geocentrifuge facilities have been used for the study of two-phase flow in porous media. For example, capillary pressure-saturation curves have been obtained by carrying out drainage and imbibition experiments on soil samples in a centrifuge. However, because two-phase flow in a centrifuge is accelerated, the question arises whether the resulting curves are representative. This issue is important in light of overwhelming evidence from the literature that the capillary pressure curves obtained under dynamic (flow) conditions may be a function of the rate of change of saturation. Thus, one may define a dynamic capillary pressure and a static capillary pressure, whose difference may be proportional to the time rate of change of saturation, with the coefficient of proportionality denoted by τ. In this work, we report on a series of drainage and imbibition experiments involving water and perchloroethylene (PCE) in two different kinds of sand (fine and coarse), carried out in a geocentrifuge. Using selective pressure transducers, both water and PCE pressures are measured dynamically at three locations within the soil column. Saturation is also measured at those locations by means of time domain reflectrometry. Results obtained here show that because of the dynamic effect, capillary pressure curves obtained in a geocentrifuge are distinctly different from static curves. The results have been used to calculate the coefficient τ for the two sands.


Articles with similar content:

DETAILED ANALYSIS OF COMBUSTION PROCESS OF A SINGLE ALUMINUM PARTICLE IN AIR USING AN IMPROVED EXPERIMENTAL APPROACH
International Journal of Energetic Materials and Chemical Propulsion, Vol.17, 2018, issue 2
Stany Gallier, Alexandre Braconnier, Christian Chauveau, Fabien Halter
WETTABILITY EFFECTS IN GAS GRAVITY—ASSISTED FLOW AS RELATED TO DISPLACEMENT INSTABILITY
Special Topics & Reviews in Porous Media: An International Journal, Vol.1, 2010, issue 1
Behzad Rostami, V. Alipour Tabrizy, Riyaz Kharrat, C. Ghotbi, M. Khosravi
INVESTIGATING THE RELATIONSHIP BETWEEN SURFACE WICKABILITY AND CRITICAL HEAT FLUX DURING POOL BOILING
International Heat Transfer Conference 16, Vol.4, 2018, issue
Youngsup Song, Zhengmao Lu, Evelyn N. Wang, H. Jeremy Cho, Yangying Zhu, Daniel J. Preston
ESTIMATION OF TRANSIENT CONTACT HEAT TRANSFER BETWEEN CURVILINEAR SURFACES BY INFRARED THERMOGRAPHY MEASUREMENTS
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Andallib Tariq, Surya Kumar
SIMULATION OF WETTABILITY EFFECTS ON GAS-WATER FLOW IN POROUS MEDIA
International Heat Transfer Conference 16, Vol.5, 2018, issue
Bohao Wu, Yu Liu, Yongchen Song, Dayong Wang, Meiheriayi Mutailipu