About
44
Publications
4,303
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
243
Citations
Publications
Publications (44)
This paper presents an experimental study focusing on the effect of intake pipe blockage on the critical submergence of lateral dual square intakes under perpendicular uniform approach flow. The pipe blockage is implemented by various intake protrusions into the approach flow, with one of the intakes always kept flush with the channel sidewall. An...
Bridges piers and other marine structures in coastal regions are affected by water currents and waves. These structures may collapse due to scour induced by water currents or waves, leading to huge economic and life losses. The problem worsens when surface waves are superimposed on current. The superposition of the wave further modifies the flow fi...
Sustainability in hydrology aims at maintaining a high likelihood of meeting future water demands without compromising hydrologic, environmental, or physical integrity. Therefore, understanding the local-scale impact of global climate change on hydrology and water balance is crucial. This study focuses on assessing the impact of climate change on w...
Coastal beaches are the most important part of the marine environment and are highly influenced by the interactions taking place between groundwater and surface water of any form. Generally, the purity index of the groundwater is based on the concentration of Total Dissolved Solids (TDS) in it. Analytical solutions are the best tools for groundwate...
Air-entrainment from surface vortex at critical submergence for hydraulic intakes adversely affects the withdrawal efficiency and intake performance. In the present study, flow at the lateral dual square bottom intake placed in a row operating under uniform approach flow is numerically simulated. The dual intakes are subjected to perpendicular appr...
The use of accurate streamflow estimates is widely recognized in the hydrological field. However, due to the model’s structural error, they often yield suboptimal streamflow estimates. Past studies have shown that soil moisture assimilation improves the performance of the hydrological model which often results in enhanced model estimates. Due to th...
Climate change (CC) affects millions of people directly or indirectly. Especially, the effect of CC on the hydrological regime is extensive. Hence, understanding its impact is highly essential. In this study, the Bharathapuzha river basin (BRB) lying in the Western Ghats region of southern India is considered for CC impact assessment, as it is a hi...
This study investigates the turbulent flow properties experimentally in the vicinity of two side-by-side circular cylinders, along with the influence of the third cylinder of the same dimension placed in the upstream and successively in the downstream forming an equilateral triangle. Three-dimensional stereoscopic Particle Image Velocimetry (PIV) w...
Floods are one of the most extremely dangerous natural hazards as they cause not only damage to property but also loss of life. The study of such extreme events gives us an opportunity to analyze the causes, be it natural or anthropogenic activities, that may have led to worsening its effect. Change in land use land cover (LULC) is one of the major...
The need for and the use of different data assimilation techniques to improve the quality of streamflow forecast is now well established. In this paper, the goal is to demonstrate the power of a new class of methods known as the Forward Sensitivity Method (FSM) which is based on the temporal evolution of model sensitivities with respect to the cont...
Coastal aquifers are of interest for many years in understanding the transient interaction of tides and groundwater. With existing studies, water table fluctuations in the two zonal aquifers of various configurations separated by horizontal or sloping bases have been addressed; however, flow properties in respective aquifers are not addressed. The...
The accuracy of streamflow forecasts is important for efficient monitoring and mitigation of flood events. Unfortunately, the uncertainty in the model control variable which includes model parameters, initial and boundary conditions, propagates through the model, resulting in the degradation of streamflow forecast. Various studies in the past have...
Coastal regions have the most challenging aquifer systems because of their geometry and the flow behavior of groundwater with
tidal oscillations. Studies have focused on tide-induced groundwater fluctuations in horizontal aquifers whose base is extending under the sea by
ignoring the fact that coastal beaches are sloping in nature. In this study, a...
World population is growing continuously that lead to increase in demand for food. Despite of increase in land area under agriculture production since last decades, one-seventh of people today still do not get sufficient nutrients in their diet. Climate change is well recognized by the scientific community and it further threats the food security f...
Planning for future sources of water is considered as one of the most challenging problems in the present world. Utilizing the link of water to climate and land cover is the key to such planning. While planning for water resources, the assessment and management based on river basin scale is the option. To assess how both land cover and climate chan...
Atmospheric and Ocean reanalysis products are handy tools for studying the past climate. However, the choice of these products could influence the outcome of the study. In this study, we compared two popular Ocean reanalysis products (ORAS4 and GECCO2) in the context of the Indian Ocean (IO) heat content variability. The region of interest is the s...
Coastlines all across the globe are home to emerging and ancient cities and are vulnerable to extreme events like cyclones and tsunamis as well as global warming induced sea-level rise. For the appropriate management of such coastal regions, these extreme events should be addressed for better preparedness. In this chapter, some important characteri...
In this study, a simulation-optimization (SO) model is presented by coupling a meshfree based simulator using radial point collocation method (RPCM) and particle swarm optimization (PSO) as optimizer to identify the unknown groundwater contaminant sources from the measured/simulated contaminant concentration data in the aquifer. To demonstrate the...
In the last few decades, due to the overuse of groundwater resources and human mismanagement, groundwater quality has been severely affected. If the quality is not safe, even if it is abundant, it is not useful. This chapter essentially deals with the nature and movement of contaminants in groundwater due to the transport mechanisms such as advecti...
Classification of watersheds into hydrologically similar groups prior to regionalization is essential for predicting streamflow in ungauged basins. The objective of this study was to improve the efficiency of classification for finding hydrologically similar watersheds by applying dimensionality reduction techniques. A new nonlinear dimensionality...
Classification of watersheds into hydrologically similar groups prior to regionalization is essential for predicting streamflow in ungauged basins. The objective of this study was to improve the efficiency of classification for finding hydrologically similar watersheds by applying dimensionality reduction techniques. A new nonlinear dimensionality...
Storage capacity of hydropower reservoirs is lost due to sediment deposition. The problem is severe in projects located on rivers with high sediment concentration during the flood season. Removing the sediment deposition hydraulically by drawdown flushing is one of the most effective methods for restoring the storage capacity. Effectiveness of the...
Earth's land cover (LC) has significant influence on land-atmospheric processes and affects the climate at multiple scales. There are multiple Global LC (GLC) datasets which are yet to be evaluated for uncertainties and their propagation into the simulation of land surface fluxes (LSFs) in land surface/climate modeling. The present study assesses t...
The assessment of land use land cover (LULC) and climate change over the hydrology of a catchment has become inevitable and is an essential aspect to understand the water resources-related problems within the catchment. For large catchments, mesoscale models such as variable infiltration capacity (VIC) model are required for appropriate hydrologica...
In many countries of the world including India, groundwater constitutes the main source of drinking water. But in recent decades, the groundwater quality has very much deteriorated due to rapid industrialization and human mismanagement. For the restoration of the contaminated aquifers, remediation efforts are used at the contaminated source and plu...
Ground water is the most important source of drinking water in many countries. Due to rapid industrialisation and human mismanagement, the ground water pollution in many places has reached a level that demands immediate attention and scientific and technological solutions for remediation on an urgent basis. For the restoration of the contaminated a...