HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Birkholzer, J. T. Articles by Zhang, Y. Search for Related Content PubMed Articles by Birkholzer, J. T. Articles by Zhang, Y. GeoRef GeoRef Citation Agricola Articles by Birkholzer, J. T. Articles by Zhang, Y. Related Collections Heat Transport Dual Porosity/Permeability Models Fractured Rock

The Impact of Fracture–Matrix Interaction on Thermal–Hydrological Conditions in Heated Fractured Rock

Ernest Orlando Lawrence Berkeley National Lab., 1 Cyclotron Rd., MS 90-1116, Berkeley, CA 94720

View larger version (72K): [in a new window]   Fig. 1. Schematic of expected thermal–hydrological conditions near emplacement drift at Yucca Mountain (not to scale).

View larger version (87K): [in a new window]   Fig. 2. Schematic illustration of channelized flow in a fracture–matrix system.

View larger version (55K): [in a new window]   Fig. 3. Schematic of (a) Center for Nuclear Waste Regulatory Analyses heater experiment and (b) simulation domain with finite volume grid. The simulation domain—reduced to one-quarter of the laboratory test cell—is rotated around the z-axis to allow for better visualization. The local coordinate system of the simulation domain is located at the top of the test cell in the center of the liquid-release cylinder. The y-axis is aligned with the drift axis.

View larger version (25K): [in a new window]   Fig. 4. Temperature contours after 5 d of heating, just before the onset of water release. Black contour line shows 100°C isotherm.

View larger version (25K): [in a new window]   Fig. 5. (a) Temperature and (b) saturation evolution just above the crown of the drift in the center of the test cell (x = 0 m, y = 0 m); (c) gives the evolution of the distance of the boiling isotherm above the drift crown, measured in the center of the test cell (x = 0 m, y = 0 m). The time axis scale is identical in all three graphs; M = matrix, F = fracture.

View larger version (62K): [in a new window]   Fig. 6. Fracture saturation contours after 10, 50, and 130 d of heating for simulation runs (a) Case A, (b) Case 1a, and (c) Case 1b. Black contour line shows 100°C isotherm.

View larger version (25K): [in a new window]   Fig. 7. Fracture–matrix interface reduction factor given as a function of saturation. For cases using the active fracture model, the saturation of active fractures, SLe,a, is shown.