Raad Hoobi Irzooki

Tikrit University · Environmental Engineering Department

The goal of this work was to develop an easy and reliable equation for calculating seepage discharge through homogeneous earthen dams that operate with toe drains. For this purpose, many data were generated using (SEEP/W) program depending on the geometrical variables that affect this seepage, such as dam height (h), upstream water depth (H), dam t...

One of the significant problems facing the water resource engineer is calculating the coefficient of roughness for subsequent design calculations of the discharge amount of a channel or river. In this study, experiments were conducted in a semi-circular, straight channel to investigate the factors affecting bed roughness and flow discharge using Ar...

In the present paper, the effects of diameter, bed slopes, and bed roughness on free overfall flow of semi-circular channels were investigated experimentally. For this purpose, three models of semi-circular channels with free overfall were built and installed in a 6m long laboratory flume. These three models were 250 cm long and had varying diamete...

The study aims to assess the water seepage through the right side of Haditha dam structures in western Iraq, using the finite elements method by an advanced computer software (SEEP/ W, 2012), the earth fill dam is 9 km long on the Euphrates River. Many attempts were done to ascertain the results of the program on a supposed earth dam and compare th...

The spillways are one of the most important hydraulic structures used in river engineering, dam construction, irrigation, and drainage engineering projects. Recently, a new type of such spillways with a circular crest has been proposed. In this paper, the hydraulic properties of the circular crested stepped spillway (CCSS) including flow pattern, d...

Major dams on Tigris River were designed and constructed as multi-purposes reservoirs. Since the flood event may occur for a specified period of the year, simulation model could be developed for rapid release decision according to time series reservoir inflow. This study deals with the application of HEC-ResSim version 3.1 in order to simulate and...

The critical depth and normal depth computation are essential for hydraulic engineers to understanding the characteristics of varied flow in open channels. These depths are fundamental to analyze the flow for irrigation, drainage, and sewer pipes. Several explicit solutions to calculate critical and normal depths in different shape open channels we...

This investigation is concerned to study the performance of gravity dam with and without stepped foundation by using shaking table model. The constructed shaking table used to generate different cases of seismic wave for acceleration, vertical and horizontal crest displacement, hydrodynamic pressure and uplift pressure. Then it was comparing with t...

Rainwater harvesting and flood prevention in cities are significant urban hydrological concerns. The use of porous pavement is one of the most effective solutions to handle this matter. Thus, this study aims to develop Porous Interlocking Concrete Pavement (PICP) using recycled aggregate from concrete waste. This porous pavement, then later, can be...

Under seismic activity, gravity dams may crack and slide, causing damage to their bodies, as well as losing structural strength and rigidity. Investigating the factors that affect seismic waves on the stabilization of gravity dams is focused on reviewing the most significant previous literature in the present study. The seismic that causes damage s...

Major dams on Tigris River were designed and constructed as multi – purposes reservoirs. Since the flood event may occur for a specified period of the year, simulation model could be developed for rapid release decision according to time series reservoir inflow. This study deals with the application of HEC – ResSim version 3.1 in order to simulate...

The capital of Iraq, Baghdad city, is considered one of the regions with a diverse soil composition besides the various characteristics of these soils. The subbase layers can be divided into three zones that are fully saturated, partially saturated, and dry state. This research accomplishes the investigation and assessment of the geotechnical attri...

This study analyzes the possible modes of the seismic wave for concrete gravity dams and the damage occurring in the body where two gravity dam sections are taken as a case study. Model (1) is a typical section of a gravity dam, while model (2) is a gravity dam section provided with specified steps at its base. The design of seismic waves included...

Dams have great importance; as a result, to increase the extent of their utilization in generating electricity and controlling floodwater. The safety of these facilities is very important, and failure of this source generates high losses in the economy and life. Earthquakes are one of the most important of these influences, as the current study rel...

Baghdad city is one of the most densely populated cities in the Middle East. The fluctuation of the groundwater in Baghdad city is due to leakage of water from distribution networks or sewage networks, as well as climate change and the existence of the Tigris River. The groundwater level in Baghdad city was simulated using the MODFLOW program, base...

The present research investigated the magnetic field effect on the properties of tap water and the magnetic water effect on some properties of the concrete used for irrigation canal lining, so, for this purpose, the absorption and seepage features of concrete will be studied. The magnetic water was obtained by passing the tap water through magnetiz...

The present research investigated the magnetic field effect on the properties of tap water and the magnetic water effect on some properties of the concrete used for irrigation canal lining, so, for this purpose, the absorption and seepage features of concrete will be studied. The magnetic water was obtained by passing the tap water through magnetiz...

In the present paper, the effects of side slopes, bed slopes and bed roughness on the flow over free overfalls in triangular channels have been studied experimentally. For this purpose, three models of triangular channels with free overfalls have been constructed and fixed in a 6m length laboratory flume. These three models had length of 244cm with...

In present paper, the computational fluid dynamics (CFD - program FLOW-3D) was used to analyze and study the characteristics of flow energy dissipation over stepped spillways. Three different spillway heights ( ) (15, 20 and 25cm) were used. For each one of these models, three numbers of steps (N) (5, 10 and 25) and three spillway slopes (S) (0.5,...

In present paper, the computational fluid dynamics (CFD - program Flow-3D) was used toanalyze and study the characteristics of flow energy dissipation over stepped spillways. Threedifferent spillway heights ( ) (15, 20 and 25cm) were used. For each one of these models, threenumbers of steps (N) (5, 10 and 25) and three spillway slopes (S) (0.5, 1 a...

In present paper, the computational fluid dynamics (CFD-program Flow-3D) was used to analyze and study the characteristics of flow energy dissipation over stepped spillways. Three different spillway heights () (15, 20 and 25cm) were used. For each one of these models, three numbers of steps (N) (5, 10 and 25) and three spillway slopes (S) (0.5, 1 a...

In present paper, the computational fluid dynamics (CFD - program Flow-3D) was used to analyze and study the characteristics of flow energy dissipation over stepped spillways. Three different spillway heights () (15, 20 and 25cm) were used. For each one of these models, three numbers of steps (N) (5, 10 and 25) and three spillway slopes (S) (0.5, 1...

This investigation concerns to find a new equation for computing the quantity of seepage through homogenous earth dam with horizontal toe drain. For this purpose the computer program SEEP/W (which is a sub-program of Geo-Studio) was used. The SEEP/W runs were carried out with three different downstream slopes of the dam, three different upstream sl...

Many new studies suggest into the possibility of obtaining positive results when exposing the water to the magnetic field of the particular iceberg, where this lead to change some properties of the water, and that the main objective for the design of systems of drip irrigation is to reduce the losses water that occur as a result of deep penetration...

In the present work, the hydraulic characteristics of flow over triangular broad crested weirs with triangular front or back face have been experimentally studied. The main objective of this research is to obtain empirical equation to estimate the value of the discharge coefficient (C d) for this kind of weir and determine the factors that affect o...

Many new studies suggest into the possibility of obtaining positive results when exposing the water to the magnetic field of the particular iceberg, where this lead to change some properties of the water, and that the main objective for the design of systems of drip irrigation is to reduce the losses water that occur as a result of deep penetration...

The stability of clover leaf coffer dam in two soil cases (dry and wet) and two positions (neutral and longitudinal), with nonlinear finite element analysis has been used in this study to predict the load deflection behavior of cellular cell cofferdam under lateral load. Series of laboratory tests have been carried out on one (single) clover leaf c...

The stability of glover leaf coffer dam in two soil cases (dry and wet) and two positions (neutral and longitudinal), with nonlinear finite element analysis has been used in this study to predict the load deflection behavior of cellular cell cofferdam under lateral load. Series of laboratory tests have been carried out on one (single) glover-leaf c...

The main purpose of traditional spillway with semicircular crest is to rise and control upstream (U/S) water level. In this study a new performance was added to this spillway, by making it as an energy dissipater. In order to study the energy dissipation percent (∆E/E 0) %, the face of traditional spillway was making stepped three times as (N s = 3...

In this research, an experimental investigation was conducted to study the characteristics of flow over weirs with semicircular openings. Four radii of the weir openings were used and three crest heights with either a sharp or semicircular shape for each radius. The results show that for the same crest height and the same depth of water over the cr...

This investigation concerns to study the characteristics of phreatic line of seepage through homogenous earth dam with and without horizontal filter using Hele-Shaw model, which also named the viscous flow analog. The constructed and used viscous flow analog was verified by comparing the phreatic line and unit discharge for different cases of earth...

Abstract – This investigation concerns to study the characteristics of phreatic line of seepage through homogenous earth dam with and without horizontal filter using Hele-Shaw model, which also named the viscous flow analog. The constructed and used viscous flow analog was verified by comparing the phreatic line and unit discharge for different cas...

The aim of the present study is to indicate the drag coefficient, pressure distribution and flow types on unconventional types of angularly cutted baffle blocks and compare the results with standard baffle blocks by using the Fluent program depending and the experimental results to achieve that. Values of the drag coefficient for different baffle b...

In this research, a finite difference method with a relaxation technique were used in a computer program which was prepared to show the influence of changing the status of sheet piles or cutoffs on the uplift pressure under a hydraulic structures.The downstream sheet pile was used inclined to the downstream side with angle of 45°, the beginning of...

A simplified plane Grillage analogy for the structural analysis of a sliding cellular gate of certain hydraulic structure under water and wave pressure is presented. The section rigidities (flexural, torsional and transverse shearing rigidities) required for the grillage members are derived from the properties of the actual cellular gate. The accur...