Anbar Journal of Engineering Sciences

This research focuses on studying the speed flow density relationships which are
considered the fundamental traffic flow relationships. The objective of the present study is to
predict statistical models represent these relationships depending on a field survey data
collected from Al-Thirthar road in Falluja city.
Data were collected by using video-recording technique. The required data were
abstracted, analyzed, grouped, and processed using computer programs developed for this
purpose. Standard statistical analysis techniques were used to examine and analyze the
observed data.
FWASIM simulation traffic software program was used to verify the predicted traffic
stream models, while the obtained results were presented in this research. To test the validity
and reliability of the model, the output results of the predicated model were compared with the
output data obtained from FWASIM model using similar input data and segment geometry.
The comparison leads to consider that the developed regression model may be used to evaluate
the performance of urban streets in Falluja city.

Using three-phase synchronous generators basic units in power plants, the main source for
feeding alternating current. The electromagnetic force (e.m.f) given by these generators depend mainly
on the number of pairs of poles in the Member excitement and speed of rotation cycles of the generator.
Since the number of pairs of electrodes are part of the structural arrangement of generator will not
change due to overload, but it will be the adoption of frequency only on the speed with which revolves
where the generator. The power transformers are the heart's main power plants and power transmission
and delivery to the consumer and based on the work of the converted electric depends on
electromagnetic induction, so the performance of work directly related to the frequency in which they
operate. It is through this research will be identified on the behavior of each of the born Synchronous
and transferred electrical in the case of low frequency. This is done checks of laboratory and compared
to examine the system simulation through the language of MATLAB has been done to change the
frequency and noting the effect on each of the power factor, efficiency and organization of voltages for
each of the converted and born Synchronous and show results in the form of charts.

Is the refrigerant of the important factors affecting the cutting process as the use of fluids and in
different proportions with water used in the cutting process has a clear influence on both the
roughness of the surface of the metal to be used and the age of many because of that importance
was the use of neural networks to predict the impact of the proportion of mixtures of different
and find the best rate of mixing terms of access to the best surface roughness and longer life for
many

In General, original reactive powder concrete (RPC) consists of a superplasticized
cement mixture with silica fumes, steel fiber and ground fine sand (150-600 µm). The main
purpose of the present work is to produce and study some mechanical properties of
lightweight reactive powder concrete using a superplasticized cement mixture with high
reactivity metakaolin (HRM) instead of silica fume, steel fiber (with different ratios ) with
ground fine sand (150-600 µm) and light weight material called (Perlite ) also with different
ratios .

An experimental study is carried out to compare the thermal performance of a sintered
powder metal wick heat pipe. Pure water and absolute ethanol are used as two different
working fluids. The pipe is made of copper with 300 mm length, 14 mm diameter, and
1.0 mm wall thickness. The wick is made of copper powder. All the experiments are
accomplished and the heat pipe is at the horizontal position (θ=0o
). The heat flux changed
within the range (2.8 -13.13) kW/m2
, while all other conditions remained constant.
The results show that the thermal performance of the heat pipe is better when water is
the working fluid, where the operating temperature and the thermal resistance of the heat pipe
are lower when the water is the working fluid.

This paper describes a numerical method for calculating the temperature distribution
and latent heat storage (LHS) in the treated wall (TW) and non-treated wall (NTW). The
developed method was assumed that the outer cement layer (Iraqi wall) enveloping the
external wall of building and houses are contains paraffin wax as a phase change material
(PCM). (25%) is the volume percentage of paraffin wax is mixed with cement which forming
a treated layer. A comparison results between the (TW) and (NTW) has been done. The paper
presents a simple calculation of case study for air-conditioning in two walls type of residential
building. The outer solar air temperatures as function of day time are considered for a hot day
in summer (July) for Baghdad city. The aim of this paper was to obtain physical validation of
the numerical results produced from using developed FORTRAN program. This validation
was obtained through a comparison of numerical solution of two different wall compositions
exposed to the same external and internal load conditions. The calculations on transient heat
transmissions across different walls were conducted. It was found that when using the (TW)
with (PCM) produces lower surface and heat flux towards the cooling space with respect to
(NTW)

ن مشكلة مواقف السيارات في مركز مدينة الرمادي تعد من المشكت الحضرية المھمة التي
تعاني منھا ھذه المدينة ،حيث تعد المشكلة المرورية ھي المشكلة المھيمنة على منطقة (CBD) وھذا له
عقة مباشرة مع اAستعمال التجاري في المدينة .
لقد تم أخذ شوارع المنطقة المركزية كحالة دراسية ومسح المواقف المخصصة للمركبات وتبين أن ھنالك
نقص حاد في عدد المواقف وخصوصاًفي القطاعات المرورية المرقمة ،9 )4 ،6،7)وأن اAستخدام العام
للمواقف ھو استخدام المواقف من نوع on-street،وقد خلصت الدراسة إلى مجموعة من اAستنتاجات
والتوصيات العامة والخاصة واقتراح بعض المشاريع ا^نية والمتوسطة والبعيدة المدى لوضع خطة
لمعالجة ھذه المشكلة الحضرية في المدينة