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Ongoing research projects

Rapid aquifer recharge technology for combined flood and drought mitigation

Groundwater recharge wells in karst/fractured rock dominated aquifers can recharge very high injection rates due to the unique hydro-geology. A network of recharge wells can be employed for rapid aquifer recharge during monsoon, for storage and recovery in the dry months.

Team

Rajagopal Sadasivam, Manivannan V

Example of sustained high recharge rates (several weeks) of a karst well in Ayankulam, Tamil Nadu

Conceptual model of karst aquifer with hydraulically connected and disconnected wells, and well network design for rapid aquifer recharge technology

Testing and monitoring water quality parameters of well injection water for safe standards

Funding agencies

New Faculty startup grant, ICSR, IIT Madras

Tirunelveli district administration, Tamil Nadu

Publications



3D canopy architecture modeling

The light environment in plant canopies exhibits high spatio-temporal heteogeneity that requires the use of 3D explicit canopy architecture models coupled with 3D ray rtacing model to accurately estimate whole plant photosynthetic carbon uptake and transpiratory water loss fluxes.

Team

Anurupa Das, Antriksh Srivastava, Pranav Hari, Gaurav Molugu

Computer simulated 3D architecture of soybean plants over a growing season

Computer simulation of 3D architecure of rice plants at different growth stages

Computer simulation of the dynamic light absorption of a canopy of soybean plants using 3D ray tracing

Funding agencies

New Faculty startup grant, ICSR, IIT Madras
Early career research grant, SERB, DST (Department of Science and Technology)

Publications

Advanced crop visualization for food security
Soybean canopy decomposition analysis



Plant hydraulics

The passive water movement through plant xylem vessels are driven by gradients in water potential between the leaf and the stem. Measuring and characterising the water potential gradients within a plant will lead to better predictive models for plant water requirements.

Team

Vinod Pathak, Spandan Gowda

Leaf water potential measurements using psychrometer

Effect of drought on leaf energy balance partitioning measured through thermal imaging

Computer simulation of the dynamic light absorption of a canopy of maize plants using 3D ray tracing

Funding agencies

New Faculty startup grant, ICSR, IIT Madras
Early career research grant, SERB, DST (Department of Science and Technology)

Publications



3D root architecture modeling

Root water and nutrient uptake from the soil exhibits spatio-temporal heterogeneity that can be captured by explicit 3D root system architecture models, coupled with 3D root water update models. This provides accurate estimates of plant root water and nutrient uptake under different climate forcings.

Team

Pavithraa Saravanane, Tathagata Sinha

Computer simulation of the dynamic light absorption of a canopy of maize plants using 3D ray tracing

Computer simulated root architecture of 4 different plants with differing architectural features

Funding agencies

Department of Civil Engineering, IIT Madras

Publications



Sea water intrusion remediation

Sea water intrusion is a growing problem affecting coastal groundwater aquifers. Computer model simulations, and laboratory experiments guide in developing strategies to mitigate sea water intrusion.

Team

Rajagopal Sadasivam, Prof. Indumathi Nambi, Prof. Prabhakar Clement

Laboratory investigation of receeding and advancing salt wedges due to sea level rise

Experimental simulation of upconing of salt wedge due to groundwater pumping

Numerical simulation of the effect of flow barriers on minimising the saltwater intrusion effect

Funding agencies

DST, Department of Science and Technology

Publications



Screening tools for contaminant transport modelling

Screening tools provide rapid initial estimates of groound water contaminant plume extant and concentrations. They are typically used in monitoring and remediation study of groundwater contaminantion.

Team

Jhansi Sangani, Sai Charan Nalla, Antriksh Srivastava



Mathematical modeling of 3D contaminant plumes emanating from a patch source for different contamination durations

Model simulations quantifying the error of approximations in existing screening models and suggesting improvements for the same

Improved model approximations for 3D groundwater contaminant transport problems

Funding agencies

Department of Civil Engineering, IIT Madras

Publications

Domenico solution-is it valid?

Improved analytical soltuion for contaminant transport

Completed research projects

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