Search Results - "Viswanathan, H. S."

A mechanisms-based model for dynamic behavior and fracture of geomaterials by Zubelewicz, A., Rougier, E., Ostoja-Starzewski, M., Knight, E.E., Bradley, C., Viswanathan, H.S.

“…A mechanisms-based fracture model applicable to a broad class of earth and earth-like materials is presented. The key features the model captures are: (1)…”
Get full text

From Fluid Flow to Coupled Processes in Fractured Rock: Recent Advances and New Frontiers by Viswanathan, H. S., Ajo‐Franklin, J., Birkholzer, J. T., Carey, J. W., Guglielmi, Y., Hyman, J. D., Karra, S., Pyrak‐Nolte, L. J., Rajaram, H., Srinivasan, G., Tartakovsky, D. M.

“…Quantitative predictions of natural and induced phenomena in fractured rock is one of the great challenges in the Earth and Energy Sciences with far‐reaching…”
Get full text

Efficient Monte Carlo With Graph‐Based Subsurface Flow and Transport Models by O'Malley, D., Karra, S., Hyman, J. D., Viswanathan, H. S., Srinivasan, G.

“…Simulating flow and transport in fractured porous media frequently involves solving numerical discretizations of partial differential equations with a large…”
Get full text

Understanding hydraulic fracturing: a multi-scale problem by Hyman, J. D., Jiménez-Martínez, J., Viswanathan, H. S., Carey, J. W., Porter, M. L., Rougier, E., Karra, S., Kang, Q., Frash, L., Chen, L., Lei, Z., O'Malley, D., Makedonska, N.

“…Despite the impact that hydraulic fracturing has had on the energy sector, the physical mechanisms that control its efficiency and environmental impacts remain…”
Get full text

Advancing Graph‐Based Algorithms for Predicting Flow and Transport in Fractured Rock by Viswanathan, H. S., Hyman, J. D., Karra, S., O'Malley, D., Srinivasan, S., Hagberg, A., Srinivasan, G.

“…Discrete fracture network (DFN) models are a powerful alternative to continuum models for subsurface flow and transport simulations because they explicitly…”
Get full text

Where Does Water Go During Hydraulic Fracturing? by O'Malley, D., Karra, S., Currier, R. P., Makedonska, N., Hyman, J. D., Viswanathan, H. S.

“…During hydraulic fracturing millions of gallons of water are typically injected at high pressure into deep shale formations. This water can be housed in…”
Get full text

GLOBAL POLITICAL AND ECONOMIC GOVERNANCE by Mihir Swarup Sharma, H. H. S. Viswanathan

“…This paper provides an overview about the challenges of multipolarity and globalization, focusing on various institutions of global governance, and how BRICS…”
Get full text

Extracting Hydrocarbon From Shale: An Investigation of the Factors That Influence the Decline and the Tail of the Production Curve by Lovell, A. E., Srinivasan, S., Karra, S., O'Malley, D., Makedonska, N., Viswanathan, H. S., Srinivasan, G., Carey, J. W., Frash, L. P.

“…Understanding physical processes that control the long‐term production of hydrocarbon from shale formations is important for both predicting the yield and…”
Get full text

Regression-based reduced-order models to predict transient thermal output for enhanced geothermal systems by Mudunuru, M.K., Karra, S., Harp, D.R., Guthrie, G.D., Viswanathan, H.S.

“…•Developed computationally inexpensive regression-based ROMs for EGS.•Performed sensitivity analysis to identify and rank key input model parameters.•ROMs are…”
Get full text

Efficient numerical techniques for modeling multicomponent ground-water transport based upon simultaneous solution of strongly coupled subsets of chemical components by Robinson, Bruce A., Viswanathan, Hari S., Valocchi, Albert J.

“…An iterative solution technique for reactive transport problems is developed, which we call the selective coupling method, that represents a versatile…”
Get full text

Continuous conditional generative adversarial networks for data-driven solutions of poroelasticity with heterogeneous material properties by Kadeethum, T, O'Malley, D, Choi, Y, Viswanathan, H. S, Bouklas, N, Yoon, H

“…Machine learning-based data-driven modeling can allow computationally efficient time-dependent solutions of PDEs, such as those that describe subsurface…”
Get full text

Continuous conditional generative adversarial networks for data-driven solutions of poroelasticity with heterogeneous material properties by Kadeethum, T., O’Malley, D., Choi, Y., Viswanathan, H. S., Bouklas, N., Yoon, H.

Get full text

Continuous conditional generative adversarial networks for data-driven solutions of poroelasticity with heterogeneous material properties by Kadeethum, T., O’Malley, D., Choi, Y., Viswanathan, H.S., Bouklas, N., Yoon, H.

“…Machine learning-based data-driven modeling can allow computationally efficient time-dependent solutions of PDEs, such as those that describe subsurface…”
Get full text

Modeling flow and transport in fracture networks using graphs by Karra, S, O'Malley, D, Hyman, J. D, Viswanathan, H. S, Srinivasan, G

“…Phys. Rev. E 97, 033304 (2018) Fractures form the main pathways for flow in the subsurface within low-permeability rock. For this reason, accurately predicting…”
Get full text

Application of the theory of micromixing to groundwater reactive transport models by Robinson, Bruce A., Viswanathan, Hari S.

“…This study extends and applies the theory of micromixing, first introduced in the chemical reaction engineering literature, to the topic of reactive transport…”
Get full text

A reactive transport model of neptunium migration from the potential repository at Yucca Mountain by Viswanathan, Hari S., Robinson, Bruce A., Valocchi, Albert J., Triay, Ines R.

“…Characterization and performance assessment studies for the potential high-level nuclear waste repository at Yucca Mountain have identified 2 3 7Np as a…”
Get full text

Carbon Mineralization in Fractured Mafic and Ultramafic Rocks: A Review by Nisbet, H., Buscarnera, G., Carey, J. W., Chen, M. A., Detournay, E., Huang, H., Hyman, J. D., Kang, P. K., Kang, Q., Labuz, J. F., Li, W., Matter, J., Neil, C. W., Srinivasan, G., Sweeney, M. R., Voller, V. R., Yang, W., Yang, Y., Viswanathan, H. S.

“…Abstract Mineral carbon storage in mafic and ultramafic rock masses has the potential to be an effective and permanent mechanism to reduce anthropogenic CO 2 …”
Get full text

Regression-based reduced-order models to predict transient thermal output for enhanced geothermal systems by Mudunuru, M. K, Karra, S, Harp, D. R, Guthrie, G. D, Viswanathan, H. S

“…M.K. Mudunuru, S. Karra, D.R. Harp, G.D. Guthrie, H.S. Viswanathan, Regression-based reduced-order models to predict transient thermal output for enhanced…”
Get full text

Role of interaction between hydraulic and natural fractures on production by Makedonska, N., Karra, S., Viswanathan, H.S., Guthrie, G.D.

“…One of the main purposes of hydraulic fracturing in unconventional resources such as shale is to improve the connectivity between existing natural fractures…”
Get full text

A geostatistical modeling study of the effect of heterogeneity on radionuclide transport in the unsaturated zone, Yucca Mountain by Viswanathan, Hari S, Robinson, Bruce A, Gable, Carl W, Carey, James W

“…Retardation of certain radionuclides due to sorption to zeolitic minerals is considered one of the major barriers to contaminant transport in the unsaturated…”
Get full text