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Introduction
Mohammad Aamir does research on scour around hydraulic structures. Other areas of his research interest include river engineering, open channel hydraulics, and sediment transport. He has obtained his PhD in Civil Engineering from Indian Institute of Technology Roorkee.
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Education
July 2014 - October 2019
July 2012 - June 2014
July 2008 - June 2012
Publications
Publications (26)
Problems of river bank and in-stream erosion are very common in most of the rivers in India and abroad. Various attempts have been made to overcome excessive erosion by constructing river training works. Porcupine systems are one of the novel techniques which have been adopted as a cost-effective method of river training. In this paper, the effect...
Stability of hydraulic structures is threatened by persistent scour downstream of the apron, which renders their foundations exposed. Jets issuing under the sluice gate are turbulent enough to cause significant scour. Extensive study of the jets is, therefore, necessary in order to understand the underlying hydraulics and provide remedial measures....
An analysis of laboratory experimental data pertaining to local scour downstream of a rigid apron developed under wall jets is presented. The existing equations for the prediction of the maximum scour depth under wall jets are applied to the available data to evaluate their performance and bring forth their limitations. A comparison of measured sco...
Scour downstream of smooth and rough rigid aprons under wall jets has been studied experimentally. Effect of apron roughness on scour has been investigated, and quantification of reduction in the scour depth due to rough apron has been performed. Characteristics of velocity and turbulence over smooth and rough aprons as well as within the scour hol...
Presented in this paper is an experimental study on scour downstream of rough and smooth stiff aprons under the influence of wall jets. The effect of various parameters on asymptotic scour depth is studied. The analysis of data reveals that maximum scour depth reduces with increasing sediment size, sluice opening, and apron length. It is directly p...
The novelty of the present study is to investigate the parameters that depict the scour hole characteristics caused by turbulent wall jets and develop new mathematical relationships for them. Four significant parameters i.e., depth of scouring, location of scour depth, height of the dune and location of dune crest are identified to represent a comp...
This study examines the scour depth induced by turbulent wall jets and proposes novel mathematical formulations to predict the depth of scouring. Through a comprehensive gamma test, key parameters influencing the scour depth are identified, including the apron length, densimetric Froude number, median sediment size, tailwater level, Reynolds number...
Arid regions are susceptible to flash floods and severe drought periods, therefore there is a need for accurate and gap-free rainfall data for the design of flood mitigation measures and water resource management. Nevertheless, arid regions may suffer from a shortage of precipitation gauge data, whether due to improper gauge coverage or gaps in the...
In response to the wide range of customer demands, the concept of reconfigurable manufacturing systems (RMS) was introduced in the industrial sector. RMS enables producers to meet varying volumes of demand over varying time periods by swiftly adjusting its production capacity and functionality within a part family in response to abrupt market chang...
Erosion of bed and banks of rivers is a problem of great concern in India and abroad. A meandering river generally erodes the outer bank and deposits the sediments on the inner bank. Protection of riverbank, also termed as river restoration, thus becomes a necessity in such reaches of a river where scouring of banks and bed material leads to change...
This paper presents an experimental study on scour depth at the confluence of a mobile and a rigid bed open channel. Substantial momentum difference between the confluent channels controls flow hydrodynamics and mixing in the confluence hydrodynamic zone. Scour at the confluence of the channels is a threat to the stability of the structure separati...
The slow accumulation of midchannel bar deposits is closely related to the turbulent burst phenomenon caused by the interaction between the fluid and bar. This channel process is revealed by researchers to be the raison d’être for initiation of the braiding process. As a result, a focused analysis of the underlying mechanics of turbulent structure...
Presented in this chapter is an evaluation of laboratory experimental data relating to local scour under the action of two-dimensional jets using soft-computing approach. Performance of the existing scour depth prediction equations is also evaluated by applying them to the existing data set. The existing prediction equations do not perform well whe...
River morphological dynamics are complex phenomena in natural and environmental flows. In particular, the sediment transport around braid mid-channel bars has not gained enough understanding from previous research. The effect of submergence ratio on the turbulence behavior in the proximity of the bar has been investigated in this study. The spatial...
The performance of corrugated apron under free flow sub-critical condition over the apron was evaluated experimentally. Compared to smooth rigid apron, the scour depth increased with application of corrugated apron under free flow of jets. Velocity and turbulence characteristics as well as Reynolds shear stress over smooth and corrugated aprons wer...
An experimental study was carried out to investigate the effect of apron roughness on scour downstream of a rigid apron under submerged wall jets. Effect of roughness of the rigid apron was investigated and quantification of reduction in the maximum scour depth due to rough apron was done. Experiments were performed over smooth and rough aprons for...
An experimental analysis on the development of scour hole downstream of a rigid apron under wall jets coming out from the opening of a sluice gate has been performed, and the results have been presented thereof. The similarity in the scour profiles with time has been shown by plotting the scour profile at different times. Equilibrium/asymptotic sco...
Understanding the phenomenon of scour downstream of dams and other hydraulic structures is
necessary for their safety as excessive scour exposes the foundation of the structure. Spilling water
from the spillway meets the tailwater in the form of jets and causes scour due to residual energy. An
experimental study has been carried out to investigate...
An experimental investigation on development of scour hole downstream of a rigid apron under wall jets issuing from a sluice opening has been performed and the results have been presented thereof. The similarity in the scour profiles with time has been shown by plotting the scour profile at different times. Equilibrium scour depth is achieved after...
An analysis of laboratory data in respect of local scour downstream of a rigid apron developed under two-dimensional (2D) horizontal jets has been presented. The existing equations are also listed in the paper. Each equation has been applied to the existing data to evaluate its performance and bring forth its limitations and range of applicability....
Problems of erosion are quite common in many rivers in India and abroad. A meandering river is generally found to erode the outer bank and deposition of sediments takes place on the inner bank. Protection of riverbank thus becomes a necessity in such reaches of a river where scouring of banks and bed material leads to change of course of the river,...
Riverbank and in-stream protection is a necessity in many reaches of a river where scouring of banks and bed material leads to change of course of the river, thereby causing loss to land and property. In big Indian rivers like Ganga, Brahmaputra and Kosi porcupine systems have been deployed as a cost-effective measure for river training and have pr...
In this paper an effort has been made to develop the relationship between annual rainfall and runoff in the region of Gandhi Sagar Dam of India (M.P.). Rainfall data of 39 years duration (1961-2000) was used for carrying out the analysis by the method of Regression Analysis. The model developed is verified by applying goodness of fit parameters viz...