المقالات البحثية
PUBLICATIONS
1- Basha, A., Al Nimr,
A., Rashwan, I., Gabr, A., 2009, Use of Sheet Piles to Control Contaminant
Transport Through the soil, Proceedings of the 6thInternational Conference on
Environmental Hydrology, Cairo, Egypt.
Abstract
In the present work an attempt is conducted to
study the control of contaminant transport through porous medium by using sheet
piles. The regional contaminated groundwater flow field in two dimensions is
studied numerically using the method of finite elements. The equations of
contaminant transport through advection, diffusion, dispersion, and adsorption
are combined with the groundwater flow equations to obtain the contaminant
distribution as a function of soil, contaminant and fluid properties. The
influence of installing a vertical sheet pile on the rate of contaminant
transport is studied for different penetration depths of the sheet piles.
Design charts are presented to quantify the effects of the sheet pile wall on
the hydraulic control of the groundwater flow field. From the charts, the sheet
pile depth can be selected according to the needed condition. This process can
be useful in the preliminary design works which may reflect the influence on
the cost estimate of the used dewatering complementary remedial system.
2- Elezaby, A., Zayed,
M., Fayed, S., Elzeir, M., Basha, A., 2009, Experimental Verification of
Gradually Varied Flow Profile Computation, Proceedings of the 6thInternational
Conference on Environmental Hydrology, Cairo,
Egypt.
Abstract
The study aims at verifying computational
methods used to determine Gradually Varied Flow (GVF) profiles; namely a
dimensionless form developed by Chen and Wang (1969) and the well-known
standard step method with experimental work.
GVF profile is measured in a laboratory flume
5.31-m long, 7.6-cm wide and 25-cm deep. The results are compared with the
above-mentioned equations. Laboratory validation is limited to mild slopes. The
study includes determination of GVF water surface profile for different bed
slopes using regulators and free over-fall
3- Basha, A., Al Nimr,
A., Rashwan, I., Gabr, A., 2010, Effect of
Sheet Piles on Contamination Transport through the Soil: Experimental and
Numerical Study, 7th International Conference on Physical Modelling in
Geotechnics, Zurich, Switzerland.
Abstract
The current research involved study on the
control of contaminant transport through porous medium by using sheet pile. The
regional contaminated groundwater flow field in two dimensions was studied
numerically using the method of finite elements, and experimentally using a
Sand Box Model. The equations of contaminant transport through advection, diffusion,
dispersion and adsorption were combined with the groundwater flow equations to
obtain the contaminant distribution as a function of soil, contaminant type and
properties of fluid. The influence of installing a vertical sheet pile on the
rate of contaminant transport is studied for different penetration depths of
the sheet pile. Numerical analyses were performed using the same experimental
conditions. Design charts are presented to quantify the effects of the sheet
pile wall on the hydraulic control of the groundwater flow field. From the
charts, the sheet pile depth can be selected according to the design condition.