A. Hussain

• PhD
• Faculty Member at Aligarh Muslim University

Settling basins are generally used as sediment removal structures in which flow velocity is reduced, resulting in surplus settlementof sediment particles. The accuracy of the available empirical equations for sediment removal efficiency is checked using data available in theliterature. The existing relationships of removal efficiency were not found...

Formation of an air-entraining vortex in the vicinity of an intake structure is considered to be a major problem of the intake. These vortices are not acceptable as they decrease the efficiency of the intake structures. Adequate submergence above the intake can effectively halt the formation of such vortices. The present study deals with the analyt...

Rectangular broad-crested gabions are economical- and environmental-friendly structures that are constructed to manage the transport of sediment in steep slope rivers. This study aims to study the pattern and extent of scour downstream of a gabion weir and impermeable weir to solve the existing problem of excessive scour by impermeable structures....

The intricate flow dynamics within a vortex settling basin (VSB) make it challenging to establish a generalized regression model for accurately estimating sediment removal efficiency. Therefore, this study proposes an alternative approach using the Adaptive Neuro Fuzzy Inference System (ANFIS) to predict the sediment removal efficiency of VSB. The...

Settling basins are generally used as sediment removal structures in which flow velocity is reduced, resulting in surplus settlement of sediment particles. The accuracy of the available empirical equations for sediment removal efficiency is checked using data available in the literature. The existing relationships of removal efficiency were not fou...

Water distribution networks are designed to deliver water from a source in an adequate quantity and at sufficient pressure to individual consumers. The best method to construct a water supply network is based on a GIS platform. In order to verify the model's accuracy and aid in simulating the entire system and evaluating the network's status, this...

A rectangular basket assembled from a hexagonal mesh of heavily galvanised steel wire, filled with rock stacked atop one another to form a weir structure, is known as a Gabion weir. They are porous structures that can sometimes be vegetated and are considered an aesthetic structural solution with minimal habitat. Recently, the stepped gabion weirs...

A weir is an overflow structure that is constructed across or parallel a river or open channel flow to measure or control the discharge. Weirs may be classified based upon their shape, nature of discharge, width of crest, and nature of crest. The crest length of an arched labyrinth weir is extended by the arch and the provision of notches. In this...

This paper discusses a numerical model study for the simulation of flow characteristics and critical submergence for a laterally placed horizontal circular bottom intake under uniform flow. The proposed model simulates the free surface using the volume of fluid model to check the vortex formation at critical submergence. A new combined approach usi...

In rivers, irrigation and drainage channels, and urban sewage collecting systems, side weirs are among the most prevalent hydraulic structures and are utilized as deviatory structures. Numerous studies have been conducted on the flow over a side weir. But due to their better effectiveness than linear side weirs, labyrinth side weirs, therefore, nee...

Side weirs, referred to as lateral weirs, are flow diversion hydraulic structures frequently used in canal systems, irrigation-drainage systems, and urban sewage systems as a head regulator of distributaries and escapes. Previous studies have mainly focused on side weirs that are rectangular or triangular shape. The present study investigated the h...

A gabion weir is considered more environmentally friendly than a solid weir, as its porosity allows aquatic life and physical matter to move through it. In the present study, a series of laboratory experiments were conducted on flow over gabion weir and solid weir under free flow and submerged flow conditions. The collected data have been used to d...

A side rectangular weir is used as a flow diversion structure, having spatially varied flow with decreasing discharge. They have various applications in the field of river, hydraulic, environmental and irrigation engineering. In this study, group method of data handling (GMDH) with two types of transfer function, namely quadratic polynomial one var...

A sharp-crested side compound weir is a flow diversion structure provided in one or both sidewalls of a channel to spill/divert water from the main channel. It is widely used in irrigation, hydraulic and environmental engineering. The mechanism of flow through the compound side weir is complicated, and it is difficult to establish a model to accura...

Hydraulic transients occur as a direct result of rapid variations of flow field in pressurized systems. The change in velocity from valve closures or pump operations causes pressure surges that are propagated away from the source throughout the pipeline. The associated pressure changes during a transient period are quite large and occur quickly (wi...

Hydraulic transients occur as a direct result of rapid variations of flow field in pressurized (closed-conduit) systems. The change in velocity from valve closures or pump operations causes pressure surges that are propagated away from thesource throughout the pipeline. If the maximum pressures exceed the bar ratings(mechanical strength) of the pip...

Flow through the rectangular side weir is a spatially varied type flow with decreasing discharge and used as a flow diversion structure. They are mainly used in the field of hydraulic, irrigation, and environmental engineering for diverting and controlling the flow of water in irrigation–drainage systems, drainage canal systems, and wastewater c...

Gabion weirs are the simplest form of rectangular broad crested porous weirs very lownegative impact on the environment.The objective ofthis paperwas to investigate therelativeenergy dissipation for flow over therectangular broad crested gabion weir.Aseries of laboratory experiments were conducted for the rectangular broad crested gabion weir havin...

Arched labyrinth weir is a special type of weir in which the crest length is increased by arch action with/without providing notches. Effects of various parameters on the coefficient of discharge of the arched labyrinth weir are established using experimental data obtained in the present study. A comparative study of discharge for different crest l...

This article presents results of experimental and numerical studies conducted on side sharp-crested compound weir in open channels. Owing to the complex mechanism of flow through a compound side weir, it is difficult to establish a regression model to accurately predict coefficient of discharge. In this study, an alternative approach to the convent...

Side orifice is a hydraulic structure provided in the walls of a channel to divert flow from the main channel to another channel. It is used widely in environmental engineering and irrigation engineering. In the present study, numerical simulation has been performed to analyze the flow characteristics of a rectangular side orifice using the CFD pro...

Side weirs are the most common diversion structures used for flow control, irrigation, drainage networks, and waste-water channels. In this study an alternative approach to the conventional regression approach in the form of artificial neural network is proposed to predict the coefficient of discharge (Cd). The performance of artificial neural netw...

A side compound sharp crested weir is a flow diversion structure provided in one or both side walls of a channel to spill/divert water from the main channel Experimental programme for this study were conducted in Advance Hydraulic Laboratory of Department of Civil Engineering, Aligarh Muslim University, India. Dimensional analysis is carried out to...

Loss of head in pipes is an important factor to be considered in design of engineering systems to reduce energy costs. This loss is either due to viscous effect called friction loss or due to change in geometry like bends, elbows, expansion and contraction. The pressure loss is a function of the type of flow of the fluid, i.e., laminar, turbulent;...

Open channels, with flow diversion structures such as orifices, weirs and sluice gates; are prevalent in irrigation systems, both for conveying water from the source to the irrigated areas, and for distributing the water within the irrigated area. The present study was broadly aimed at to investigate the flow characteristics of sharp-crested side c...

Orifice type spillways are provided in the dam at lower level for facilitation in flushing of the sediment from the reservoir in addition to spilling the flood water. However, in most of the hydraulic structures, particularly in the earthen and rockfill dams, the spillway is not a part of the dam and it is provided on either of the banks of the riv...

A side lateral orifice in open channel is hydraulic control structure widely used in hydraulic, irrigation and environmental engineering for diverting the flow from main channel to a secondary channel. In this paper, analytical relationships for the discharge through side orifice are developed accounting for the pressure distribution over the area...

A side orifice is a flow diversion structure which is widely used in irrigation works for diverting the flow from any main channel to its secondary channel. Analytical and experimental studies for flow through side square orifices in open channels are presented in this paper. Existing discharge equations for the side orifices are checked for their...

Bottom slot outlet is used to serve as a combined sewer overflow diversion structure to convey flow to deep tunnel storage under free discharge conditions and pass the remaining volume once storage capacity is exceeded with minimum backwater effects. Bottom slot also act as a standard structure in storm sewers, provided the approach flow is supercr...

Side orifices are widely used in irrigation and environmental engineering to spill or divert water from a channel. Flow characteristic of sharp-crested rectangular orifices under free flow condition in open channels is studied in the present paper. Existing discharge equations are checked for their accuracy using the data collected in the present s...

A side orifice is a flow diversion structure provided in one or both side walls of a channel to spill/divert water from the main channel. It is widely used in irrigation and environmental engineering. Analytical and experimental studies related to the discharge characteristics of sharp-crested circular side orifices in open channels under free flow...