PhD of Philosophy in civil Engineering / Water Resources Engineering
RESEARCH, TEACHING, or OTHER INTERESTS
Civil and Structural Engineering, Water Science and Technology, Ocean Engineering, Environmental Engineering
16
Scopus Publications
Scopus Publications
RAINFALL INTENSITY CHARACTERIZATION IN SEMI-ARID REGIONS: DERIVATION OF IDF CURVES USING MULTI-MODEL APPROACHES FOR HILLA CITY, IRAQ Riyadh H. M. Muttaleb, Faiz H. Al-Merib, Ameer Hashim Hussein Kufa Journal of Engineering, 2026 This study aims to develop a formula to estimate rainfall intensity depending on Intensity Duration Frequency (IDF) curves. The rainfall IDF relationship is one of the tools used in water resources engineering to classify rainfall intensity for a given return period. Daily rainfall data for 20 years from (2003 to 2022) from the Iraqi Metrological Organization and Seismology was used to generate IDF curves for Hilla City. Three methods, namely, Gumbel, Log Normal, and Log Pearson III, were used to derive IDF curves using MATLAB software for six durations (1, 2, 3, 4, 5, and 6 hr) and six return periods (2, 5, 10, 25, 50, and 100 years). Then, empirical equations were developed to estimate rainfall intensity for the various rainfall durations and frequency periods. The results showed an excellent correlation coefficient (R2) for these empirical equations with an average (94.4 %) the maximum rainfall intensity was 48.6 mm/hr during a 1 hr return period and a 100-year return period. However, the 2.7 mm/hr was the minimum rainfall intensity that occurred during the 6-hour duration period and 2-year return period
Advanced uncertainty quantification in rainfall-intensity duration frequency curve modeling: A case study of Hilla City and surrounding regions, Iraq Ameer Hashim Hussein, Thair Jabbar Mizhir Alfatlawi Ecological Engineering and Environmental Technology, 2025 The rainfall-intensity duration frequency (IDF) relationship is mostly used in water resource engineering to plan, design, and operate water source projects and projects to manage flood dangers. Engineers must accurately calcu - late rainfall to design structures that effectively manage runoff collection, conveyance, and storage, as the hydro - logic cycle relies on precipitation. An analysis is conducted on the annual rainfall measurements (mm) from five atmospheric observatories in Iraq (Najaf, Hilla, Kerbala, Diwaniya, and Baghdad) spanning 1989 to 2023. The objective is to determine the characteristics of the observed frequency distributions. The Gamma, Log Normal, and Normal distributions compare the data. Kolmogorov-Smirnov, Anderson-Darling, and Chi-Square are study tests. The IDF depict extreme rainfall values over 15, 30, and 60 minutes, with 5, 10, 15, and 50-year return periods. The results indicate that the Chi-Square test has the most optimal distribution among all the stations. The normal distribution was found to be the best for the years (5, 10, 15, and 50) through the IDF curves drawing of stations where the distributions were compared. Equations of Hilla station were found through an IDF equations curve to Hilla from its surrounding stations; and get the error. The result was good agreement, with a ratio Coefficient of Determination ranging from 83.2 to 94.7.
Hydrological Modelling of Sediment Yield in the Upper Basin Region of Kirkuk City Watershed Ameer Hashim Hussein, Thair Jabbar Mizhir Alfatlawi, Reham Alwash Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2025 Mountain sedimentation and undue erosion provide significant challenges for dams since materials accumulate within reservoirs that hold water, reducing the capacity for storing living water, which is the most important goal of dam building. Iraq is one of the nations that will have a big problem getting sufficient water because its water requirement continues to climb, and the supplying countries provide less water to Iraq. The present research focuses on the upper basin of the Kirkuk City watershed in northeastern Iraq. The largest watershed region, spanning approximately 420 km2 within Al-Sulaymaniyah and Kirkuk Provinces. The objective is to quantify and foresee the sediment yield in this basin using 43 years of daily environment information and various rainstorm events with various intensities. The model was adjusted and confirmed by comparing it to the monthly mean surface flow and sediment readings obtained at the Kirkuk gauging station. The Soil and Water Assessment Tool (SWAT) model was utilized to simulate the upper basin region of Kirkuk City. The aforementioned model uses the geographic information system (GIS) software to analyse necessary information from GIS layers of the electronic contour modelling kind of soil, using of land, and coverage by integrating it with the appropriate climatic information. The kinematic erosion (KINEROS) and runoff model can simulate intricate watershed behaviour by precisely adjusting for the geographical variation of soils, distribution of rainfall sequences, and vegetation. The hydrological features of the Kirkuk city basin reveal that the subdivisions with the highest erosion rates cannot transport the debris or deposits to the reservoir, primarily due to propagation damages, percolating, and other smaller barriers. The optimal curve number (CN) was determined to be between 84 and 88, while the land cover factor (C) ranged from 0.005 to 0.04. The model validation results indicate that the Kirkuk Dam reservoir received a total volume of water estimated at 118.7 million cubic metres (MCM) and a total silt yield of 0.85 million tonnes. The “KINEROS” simulation modelling for the sediment yield closely matches the upper basin of Kirkuk watershed's deformation and sedimentation behaviour during singular rainfall events; this is particularly true for parts of watersheds located near the watershed area entrance.
Utilizing statistical distribution tests to develop rainfall intensity–duration–frequency curves for enhanced hydrological analysis in Kirkuk city, Iraq Ameer Hashim Hussein, Mustafa Najdat Kasim Water Practice and Technology, 2024 Rainfall intensity is considered one of the basic factors in designing hydrological models based on rainstorm data. The objective of this research is to employ novel intensity–duration–frequency curves and develop empirical equations for rainfall intensity in the city of Kirkuk. The reduction formula adopted by the Indian Meteorological Department was used to divide the maximum daily rainfall for short periods of 0.5, 1, 2, 4, 6, 12, and 24 h. Three key methods of frequency analysis (lognormal distribution, log Pearson type III distribution, and Gumbel extreme value distribution) were utilized to formulate a statistical relationship based on rainfall intensity data from between the years 1981 and 2023 for a gauging station upstream of the Kirkuk city basin to provide the best data set for all periods of 100, 50, 25, 10, 5, and 2 years. Research has shown that the logarithmic distribution is the best fit for modelling the relationship between the annual maximum rainfall at Kirkuk station and duration of the rainfall. The goodness-of-fit results indicate that the lognormal distribution statistically outperforms other distribution models. Hence, the generated rainfall intensity, duration, and frequency curves that were developed led to estimating the intensity of precipitation to build forecasting and hydrological behaviour of the Kirkuk city basin.
Innovative Calibration Strategies for Weirs with Half-Round Crest Edge Modifications Ameer Hashim Hussein Instrumentation Mesure Metrologie, 2024 This work offers a set of empirical investigations to determine the flow's discharge coefficient over rectangularity weirs via half of the crest of the circular edge extended over the entire channel width (repressed) for evaluating the flow. Three weirs were built and put through various discharge tests. They had a decent coefficient of discharge, a consistent overflow pattern, and floating debris that was easy to pass. Knowledge of the discharging head correlation for multi-models (3 models) varying weir heights (60 mm, 80 mm and 100 mm without circular edge), in addition the crest curvatures, is provided by data gathered from tests conducted in laboratories. An experimental head-discharge formula is included in every model. This study covers a crucial problem in hydraulic instrumentation and flow measurement, aligning with scientific and technical advancements in measurement and metrology. The emphasis on creative calibration procedures for modified weirs is contemporary and relevant. The anticipated flow coefficient values for the models suggested were determined using discharge-measured data and the calculated flowing formula. The examination of the findings indicated that the discharge coefficient is directly related to both the radius of curvature and the height and the upstream head above the weir crest. Empirical equations were found by multi-regression approaches with %Error (±2 to ±4) and Validated by the Nash-Sutcliffe model efficiency coefficient (NSE).
Probing the complexities of optimal flow in open channels: experimental and numerical validation with diversion flow Thair Jabbar Mizhir Alfatlawi, Ameer Hashim Hussein Journal of Hydroinformatics, 2024 This study aims to establish the optimal diversion angle for bifurcating channels to minimize separation zone size in the intake channel while maximizing discharge in the bifurcating channel through experimental and numerical investigations. The study successfully accomplished its goals by employing the Flow-3D 11.0.4 software. The software was utilized to examine the flow diversion into bifurcating channels with various diversion angles, including 900°, 750°, 600°, 450°, 300°, 250°, 200° and 150°. The experimental investigation has confirmed the theoretical predictions regarding the expected flow characteristics. The conclusive findings demonstrated that the diverted flow is most effectively impacted by a diversion angle of 25°. The study provided findings for various discharges flowing (12.3 and 17 L/s); a total of 95 runs were performed, and investigations revealed that the branching discharge depends on several interconnected parameters. It rises with an increase in the depth ratio. In subcritical flow, the main channel always has a lower water depth than the branch channel. The flowing diversion to the branch channel causes a reduction in water depth downstream of the main channel. The study found that the optimal angle for branching was 25°.
A numerical study of diversion flow to determine the optimum flow system in open channels Thair Jabbar Mizhir Alfatlawi, Ameer Hashim Hussein Water Practice and Technology, 2024 The term ‘branching flow’ describes water extraction from streams or main channels via secondary lateral channels. Through using 3D model simulation, the aim is to identify the ideal angle of diversion based on the maximum flow rate to the branching channel and the minimum zone of separation size attained at the entrance channel for the eight grades (90°, 75°, 60°, 45°, 30°, 25°, 20°, and 15°). An experimental study has previously been confirmed, and this paper provides a comprehensive implementation of the numerical solution (finite volume) using Flow 3D version 11.0.4 software. The validation study was conducted at the Babylon University/College of Engineering/Laboratory of the fluid. The study presented results for many different flow discharge ratios depending on two inflow discharges (12.5 and 18.5 L/s). The comparison between the numerical model and the experimental results revealed statistically a good agreement. The final results demonstrated that a diversion angle of 25° had the most significant optimum angle with the maximum discharge ratio, a minimum separation zone size, and minimum energy losses. Furthermore, the flow rate peaks in the bifurcating channel (5.76 and 8.11 L/s), which accounts for roughly 46.06 and 43.83%, respectively, from the main channel flow.
A Review of Studying the Flow Characteristics in Branching Open Channels Thair J. Alfatlawi, Ameer Hashim Hussein International Journal of Heat and Technology, 2024 The drinking water supply, as well as other water-related uses for humans, begins with extracting the "raw" water from different sources.Many plants treat the water by directly flowing raw water from the water resources to the nearby plants of the treated water through the side channels.Open channels in drainage and irrigation projects are the main water transport method.For more situations, channels had to branch into more secondary channels though they could provide ancillary items such as water and irrigation to municipal utilities and hydroelectric schemes.Many experimental and theoretical investigations of the branch open channels have been implemented to recognize the flow into their characteristics and convert them into a natural case of practical and theoretical investigations.This study's primary targets are reviewing the effect of physical features and models of branch channels by checking relevant kinds of literature.The flow quantity to branching channels is affected by many factors (angle of diversion, discharge of the main channel, slope of the bed leading to both the main and the branch channel etc.).The branch channel experiences a reduction in its velocity, momentum, and Froude number due to an increase in the upstream discharge of the main channel.It rises with increasing water depth upstream in the branch and the main channel bed width.Since diverting water flow to a branch channel reduces the downstream water depth in the main channel, the main channel's water depth is often greater than the branch channel's.This review concerns the boundary condition and angle diversion of branch channels to the vital case investigation, so as to the recirculation zone occurs at upstream branch channel decreasing with decreasing the diversion angle.
A Comprehensive Assessment of Sediment Transport in Greater-Zab River, Iraq Ameer Hashim Hussein, Muammar H. Attaee Iop Conference Series Earth and Environmental Science, 2024 The requirement for efficient management of natural resources has recently risen. Consequently, the requirements for a hydrological analysis study is a crucial instrument for managing watershed natural resources-means the region of interest must be thoroughly investigated and evaluated. This study employs morphometric analysis to examine the Greater-Zab watershed in the northeastern part of Iraq. The Greater-Zab River serves as the case study because no sediment observations have been made there at all. Prior investigations have been conducted to gather data on the soil composition and anticipated hydraulic parameters at Km. 73.000 of the Basin, specifically upstream of Ninawa Governorate. These investigations were carried out in relation to the design discharge of 330 m3/s. The main goal of this research is to employ various widely-used methodologies globally to assess an alluvial channel’s capacity to carry the entire bed-material load, using the Greater-Zab River Basin as a case study. There were five different formulas that were utilised in order to get an estimate of the bed’s material load. Larsen’s Observational Methodology [LOM], Karim and Kennedy’s Regression Method [KKRM], Engelund and Hansen’s Stream Power Technique [EHSPT], Akers and White Stream Power Technique [AWSPT], and Yang Stream Power Technique with Dimensionless [YSPTD] are the names of these studies. Taking into account Yang’s 1973 ruling, the study found that 1)The anticipated bed-material load at the site under consideration is roughly (205000 m3/Year); 2) Variations in the outcomes of various formulas used to anticipate the amount of sediment in rivers by a certain factor are expected; and 3) It is crucial to measure the amount of sediment load in significant areas, such as those that support property and life in a major metropolis (as in the case study).
USING TRANSPARENT CONCRETE FOR SUSTAINABLE ENGINEERING SPACES Procedia Environmental Science Engineering and Management, 2024
Electrochemical removal of nitrate from wastewater Mohammed AL-Housni, Ameer Hashim Hussein, David Yeboah, Rafid Al Khaddar, Bareq Abdulhadi, Ali Abdulhussein Shubbar, Khalid S. Hashim Iop Conference Series Materials Science and Engineering, 2020