LARHYSS Journal


Description

English Larhyss journal is an international peer-reviewed journal published by the research laboratory in subterranean and surface hydraulics since 2002. The scope of the Journal covers the fields in which the teams of the research laboratory in subterranean and surface hydraulics are active. Original research papers, short communications and critical reviews from all fields of science and engineering related to water are welcomed. Larhyss journal is devoted to the rapid publication of research in water engineering, acting as a link between the diverse research communities and practitioners in the field of hydraulics. The journal accepts manuscripts exclusively in English. Larhyss journal publishes articles on all aspects of hydraulics including hydrology, water and wastewater treatment, surface, and groundwater protection, flow in channels, and pipes, hydraulic modeling… Français LARHYSS journal est une revue scientifique internationale publiée par le laboratoire de recherche en hydraulique souterraine et de surface depuis 2002. La portée du Journal couvre les domaines dans lesquels les équipes du laboratoire de recherche en hydraulique souterraine et de surface sont actives. Des documents de recherche originaux, des communications brèves et d'analyses critiques de tous les domaines de la science et de l'ingénierie liées à l'eau sont les bienvenus. LARHYSS Journal est consacré à la publication rapide de la recherche en ingénierie de l'eau, agissant comme un lien entre les communautés de recherche diverses et praticiens dans le domaine de l'hydraulique. La revue accepte des manuscrits exclusivement en anglais LARHYSS journal publie des articles sur tous les aspects de l'hydraulique, y compris l'hydrologie, le traitement des eaux, la protection des eaux souterraines et de surface, ecoulements dans les canaux et conduites, modelisation hydraulique...


22

Volumes

56

Numéros

670

Articles


USE OF MACHINE LEARNING ALGORITHMS AND IN SITU DATA FOR ESTIMATING PARTICULATE ORGANIC CARBON FROM THE MEDITERRANEAN SEA

Fellous Samir, 
2022-08-22

Résumé: Water quality indicators, including biological, chemical, and physical properties, are usually determined by collecting data from the field and analyzing them in the laboratory. Although these in situ measurements are costly and time-consuming, they offer high accuracy. This study focuses on the estimation of particulate organic carbon (POC) as a water quality parameter using a combination of machine learning algorithms and hyperspectral in situ data. A data-driven approach that does not need any domain knowledge was used. We were interested in POC generated by bacteria, phytoplankton, zooplankton, detritus, and sediments in the Mediterranean Sea from the period of 15 May to 10 June 2017. Therefore, the objective of this study was to use five regression frameworks from machine learning algorithms, to estimate POC with hyperspectral in situ data and evaluate their performance. Based on the coefficient of determination R2 the best-performing modes were nearest neighbors (KNN), Gradient boosting (GB) and random forest (RF) with an R2 in the range of 72.33 to 74.7%. These machine learning models can be used to investigate more water quality parameters, as they reveal a great potential of this approach.

Mots clés: POC, machine learning, in situ measurement, phytoplankton, hyperspectral


MODERN WATER SUPPLY MANAGEMENT TECHNIQUES AND METHODS: A REVIEW

كولوغلي شمس الدين,  تلي عبد المطيع, 
2023-08-04

Résumé: Water management has become one of the priorities for all countries due to water scarcity and population growth. However, the traditional methods used in this field need much time and high costs to be implemented. Therefore, recent research has focused on developing new alternatives for efficient water management. This review aims to survey the techniques and methods of water distribution management applied in different categories of applications. These are inequity in intermittent water supply (IWS), water demand forecasting (WDF), smart water management using the Internet of Things (IoT), and water leakage monitoring. This review mentions the proposed methods for improving equity in intermittent water supply systems. In addition, it discusses the application of machine learning algorithms to predict future water demand based on water consumption and climate variables. We also cite the application of IoT technology in water management through installing sensors along the network that allow real-time monitoring of WDSs. Finally, we discuss hardware and software methods used to monitor water leakage in WDNs.

Mots clés: Water management ; inequity ; intermittent water supply ; internet of things ; water demand forecasting ; water leakage monitoring


PREDICTIVE MODELING OF OZONE DOSING IN DRINKING WATER TREATMENT PLANT USING DEEP LEARNING COMPARATIVE STUDY BETWEEN DEEP NEURAL NETWORKS AND CONVOLUTIONAL NEURAL NETWORKS

هلال عواطف,  جدو مسعود,  لوكام عماد,  ا. حامد ابراهيم,  الدلال جهاد,  شواقفة مؤيد, 
2023-08-04

Résumé: Ozone is known to be a powerful oxidant and disinfectant in drinking water production processes. The ozone dosing process presents a particularly difficult control problem due to its nonlinear behavior. Most water treatment plants use ozone dosing by determining the ozone concentration based on operational experience without considering temporal variations in water quantity and quality. In this case, this approach can lead to an overdosing that can increase costs or an underdosing that will influence the quality of the treated water. Two deep learning models, namely, the DNN model and CNN model, were applied for ozone dosing predictive modeling tasks. Comparing the results obtained in the training and testing processes, we notice that the DNN model with 5 hidden layers outperforms the CNN model. These results seem very encouraging, and the methodologies seem promising.

Mots clés: Ozone dosing, Drinking water treatment, Deep learning, Predictive modeling


FLOOD HAZARD MAPPING OF LOWER DAMANGANGA RIVER BASIN USING MULTI- CRITERIA ANALYSIS AND GEOINFORMATICS APPROACH

Kapadia Cheshta,  Patel Khushboo,  Akbari Jay,  Rathod Namrata,  Mehta Darshan,  Waikhom Sahita, 
2023-08-04

Résumé: Flooding is one of the most damaging natural disasters that occur anywhere in the world. Flood hazard mapping is essential to determining flood risk zone areas. The present study used the analytical hierarchical process (AHP) and geographical information system (GIS) for flood hazard mapping of the lower Damanganga River basin from the Madhuban Dam to the Arabian Sea. The major factors affecting floods are hydrological characteristics, which are the combination of meteorological and basin characteristics. A total of seven parameters were selected, and a thematic map for each parameter was prepared. AHP was used to find the weights of the selected parameters using a questionnaire survey. Thematic maps were then integrated with weighted parameters obtained to create the flood hazard map. The abovementioned study's findings show that approximately 32% of the total area in the lower Damanganga River basin is prone to high floods, whereas 33% of the total area is prone to moderate floods. This study will be helpful to policymakers in reducing the risk of flooding

Mots clés: Damanganga basin ; AHP ; Flood hazard mapping ; GIS ; Resources at LISS-III


NORMAL DEPTH COMPUTATION IN A RECTANGULAR OPEN-CHANNEL WITH CIRCULAR SIDES USING THE ROUGH MODEL METHOD (RMM)

معنصري نعيم,  لكحل موسى,  بجاوي علي,  هاشمي راشدي لامياء,  بوصلاح صورية,  عاشور بشير, 
2023-08-04

Résumé: The computation of normal depth in open channels is a topical field in the practice of hydraulic engineers. Many methods consider Chezy’s resistance coefficient or Manning’s roughness coefficient as given data when calculating the normal depth. This seems unjustified since these coefficients depend in particular on the normal depth sought. The objective of this study is to propose an explicit method allowing the calculation of the normal depth in a rectangular channel with a horizontal bottom and circular walls using the rough model method (RMM), which is based on parameters that are easily measurable in practice. These parameters are the discharge, longitudinal bed slope, absolute roughness and kinematic viscosity. After establishing the equations governing the geometric and hydraulic characteristics of the referential rough model, the study shows that the normal depth sought is equal to the normal depth in the referential rough model corrected for the effects of a nondimensional correction factor.

Mots clés: Discharge ; Normal depth ; Rectangular Open Channel with Circular Sides ; Slope ; Turbulent flow ; Uniform flow


EXACT SOLUTION FOR NORMAL DEPTH COMPUTATION IN SOME OPTIMAL CHANNEL CROSS-SECTIONS

رمضاني ايمان,  سيكيو فاتح,  لكحل موسى,  عاشور بشير, 
2023-08-04

Résumé: The normal depth is an important hydraulic element in the design, operation and maintenance of canals. The calculation of this normal depth is based on Manning's formula, which has long been considered applicable only in the rough turbulent domain, and Manning's coefficient is considered in several works as a constant of the problem. The objective of this study is to express the normal depth in different semipolygonal canals as the optimal cross-section (semicircular, rectangular, triangular and trapezoidal), taking into account the variation in Manning's coefficient as a function of all the parameters governing the uniform flow, including the viscosity of the liquid. The study led, through the application of the rough model method (RMM), to a dimensionless expression of Manning's coefficient, written as a function of the characteristics of the rough model, allowing the construction, for each chosen cross-section, of a diagram similar to Moody's. The diagrams give Manning's coefficient in the whole turbulent domain (smooth, transition and rough), which is considered a generalization of Manning's formula in the whole turbulent domain instead of only the rough domain. The exact solution of normal depth by using the equation of Manning’s coefficient has therefore been proposed.

Mots clés: Normal depth ; Manning’s resistance coefficient ; Optimal cross section ; Rough model method (RMM) ; Semipolygonal channels


THE GHOUT OF EL OUED IN ALGERIA: A PATRIMONY AND A NATURAL HYDRO-AGRARIAN ALARM SYSTEM TO ADVANCE

خبيزي حفيظة,  بلواكلي بشير,  شاوش مريم,  شاشة بوبكر, 
2023-08-04

Résumé: The Ghouts of Sandrous location situated in the municipality of El Ogla, El Oued are an example of the protected original agrarian system of the Soufis people compared to other Ghouts areas. Six Ghouts have been visited to better understand the concepts of this ancestral patrimony. The anthropogenic constraints causing the deterioration of the Ghouts have been determined, notably the evolved oasis system, the pivot irrigation system, and the hydrodynamics disequilibrium where two scenarios are determined. The first is related to the rise in the static level of the watertable. This scenario indicates for the first time a flooded Ghout due to a lithological subsidence phenomenon. However, the second scenario relates to the drawdown in the static level of the watertable. This last scenario evokes the drying up of Ghout. Other anthropogenic constraints have been raised to find solutions. The field technique of El Beneias built to plant new palm trees called Baalis is used to determine the watertable static level in Ghout. It allows the introduction of Ghout’s technique for the first time as a reference technique named the hydroagrarian alarm system for better managing the watertable.

Mots clés: El Oued ; Ghout ; Patrimony ; Watertable ; Self-irrigation ; Alarm system


STATISTICAL APPROACH OF GROUNDWATER QUALITY ASSESSMENT AT NAAMA REGION, SOUTH-WEST ALGERIA

Lachache Salih,  Derdour Abdessamed,  Maazouzi Izzeddine,  Amroune Abdelouahab,  Guastaldi Enrico,  Merzougui Touhami, 
2023-08-04

Résumé: This study investigates the hydrogeochemical processes of groundwater in the Naama watershed in southwestern Algeria, aiming to determine the relationship between geochemical processes and groundwater quality. Multivariate statistical and thermodynamic techniques were applied to 22 groundwater samples to understand the hydrochemical evolution of the watershed. The results indicate that the water is predominantly characterised by a calcium-bicarbonate water type in the center of the study area (23% of samples) and a sodium chloride sulfate water type mainly located in the north due to Triassic dissolution and proximity to Sabkha (50% of samples), and the remaining 27% of samples are represented by the sulfate-sodium facies. Cluster analysis and principal component analysis revealed three major hydrochemical types reflecting different hydrochemical processes occurring along groundwater flow as electrical conductivity increased. The findings of this study could inform strategies for the sustainable management of groundwater resources in the Naama region and similar regions.

Mots clés: Hydrogeochemical processes, Groundwater; Naama watershed; Hydrochemistry; Groundwater quality.


THE WATER MANAGEMENT SYSTEM IN THE VILLAGE OF MENADES IN ALGERIA BETWEEN PAST AND PRESENT

كزار محمد أكلي,  صوار عائشة, 
2024-01-16

Résumé: Given the importance of water in human life, most communities have developed specific systems to exploit water resources in various aspects of life. From region to region, settlement to settlement, a set of determinant factors have contributed to these systems' creation and development. In this research, we have tried to highlight the particularities of the traditional water management system in the case of the village of Menades. We also tried to identify the transformations (technical, economic and social, etc.) and the development process that have influenced this system over the last forty years to become what it is today. By addressing these aspects, we attempted to identify the current difficulties of water management in the village and their possible solutions. The methodological tools used were observation, interviews, Google Earth Pro software, and microbiological analysis of the water. The results of the research indicate that the system has evolved as a result of a number of exogenous and endogenous factors. This evolution presents some positive aspects, but also a number of challenges and problems to which the various stakeholders need to work together to find appropriate solutions.

Mots clés: Water management ; Thala ; Tharga ; Menades village ; Evolution


THE 2A TRIANGULAR WEIR - DESIGN, THEORY, AND EXPERIMENT

Achour Bachir,  Amara Lyes, 
2023-08-18

Résumé: The 2A triangular weir is a new type of weir that belongs to the category of weirs with a triangular longitudinal profile. The current device has the same upstream and downstream slopes as the Crump weir. The study intends to derive the theoretical relationship that governs the discharge coefficient Cd of the device and hence that of the flow rate Q, known as the stage-discharge relationship. For this, the energy equation, involving the approach flow velocity, is applied between two judiciously chosen sections of the free flow crossing the weir under critical state conditions. The resulting equation is transformed into dimensionless terms, and the discharge coefficient is derived by comparison with the well-known stage-discharge relationship of triangular weirs. Another method, based on the kinetic factor, is also applied and leads to the same result. The theoretical discharge coefficient relationship shows that only the relative weir height is the influential parameter, as predicted by the dimensional analysis. The shape of the approach channel has no influence either on the discharge coefficient Cd or on the flow rate Q. This feature gives the device a universal range since its use can be extended to any shape of the approach channel.

Mots clés: Novel type weir ; 2A weir ; Stage-discharge relationship ; Discharge coefficient ; Experimental validation


PERFORMANCE ANALYSIS OF A TUBULAR SOLAR STILL INCORPORATED WITH POROUS SOIL TO IMPROVE DISTILLATE OUTPUT

Shah Syed Muzzamil Hussain ,  Qamar Naeem ,  Qureshi Haris Uddin ,  Mustaffa Zahiraniza ,  Teo Fang Yenn ,  Saleem Shahid ,  Qamar Nadia ,  Ahmed Farhan ,  Ali Zohaib ,  Hussain Sadam , 

Received date: 19-01-2023    Publication date: 10-06-2023    pages  7-23.