Academic literature on the topic 'Vacua configuration'

ABSTRACT The Kimmeridge Clay Formation of the Wessex Basin, United Kingdom, illustrates the expression of sequence-stratigraphic surfaces and units in a relatively restricted Mesozoic clastic shelf to relatively distal basin setting. This formation is of similar age and depositional setting to the Haynesville Formation (USA), Vaca Muerta Formation (Argentina), and Bazhenov Shale (Russia) but differs significantly in basin configuration and resultant depositional geometries. This chapter describes in detail the steps of the application of the sequence-stratigraphic method to the mudstone-dominated, organic-matter–rich interval around the Blackstone Band (Tithonian, Wessex Basin, UK) using a subset of the many datasets available for the Kimmeridge Clay Formation. We described 50 m of outcrop section at a 1:10 scale, constructed six detailed cross sections, correlated 21 parasequences across the basin, and mapped systems tracts. The insights gained by this approach allowed us to explain rock-property variations at a local to regional scale. Meter-scale stratal units and significant stratigraphic surfaces (flooding surfaces, sequence boundaries) could be correlated over more than 25,000 km2 in a depositional setting where no single sediment-accumulation process (organic-matter production, destruction, or dilution) obviously dominated across the entire area. In this setting, inherited and syndepositionally evolving bathymetry influenced sediment deposition and thickness trends, and controlled the distribution of rock properties. At the parasequence scale, the highest enrichment of organic matter occurs not only just above the basal flooding surface but also in some, more distal, areas, a short distance above. At the depositional-sequence scale, lateral changes in thickness occur not just by proportional thickening and thinning (“aggradation”) but also by stratal terminations by truncation, onlap, and downlap. A comparison of systems-tract–scale maps with ammonite-zone maps illustrates that the higher resolution sequence-stratigraphic framework has the potential to reveal more about mud accumulation and the influences on rock properties and their lateral variation.

In this paper the modal characteristics of a flexible cylinder in turbulent axial flow are investigated with partitioned fluid-structure interaction simulations. In these simulations a computational fluid dynamics calculation to resolve the flow field is coupled with a computational structure mechanics calculation to compute the structural behavior. The cylinder is initially deformed according to an eigenmode in vacuo and then released. From this free vibration decay of the cylinder in the turbulent axial flow, modal characteristics are determined. To assess the accuracy of these calculations,

This paper presents the summary of design features and test results of two Type B Shipping Package prototype configurations comprising different insulating materials developed by the Savannah River National Laboratory (SRNL) for the Department of Energy. The materials evaluated, a closed-cell polyurethane foam and a vacu-formed ceramic fiber material, were selected to provide adequate structural protection to the package containment vessel during Normal Conditions of Transport (NCT) and Hypothetical Accident Condition (HAC) events and to provide thermal protection during the HAC fire. Polyuret

Abstract La Calera is an unconventional wet gas field located close to Añelo city in Neuquén province. There are currently 30 horizontal wells in production from Vaca Muerta formation, drilled at three different landings zones, gathered in 3-well pads. The wells are first opened using testing facilities in order to evaluate their productivity, as well as to prevent liquids and sand from reaching plant facilities. This paper describes the lessons learned after the first wells flowback, the different events that had to be sorted (sand blockage, erosion, hydrates, etc.) and the operational workfl

Abstract Fiber-based flexible piezoelectric composites with interdigitated electrodes, namely Macro-Fiber Composite (MFC) structures, strike a balance between the deformation and actuation force capabilities for effective underwater bio-inspired locomotion. These materials are also suitable for vibration-based energy harvesting toward enabling self-powered electronic components. In this work, we design, fabricate, and experimentally characterize an MFC-based bio-inspired swimmer-energy harvester platform. Following in vacuo and in air frequency response experiments, the proposed piezoelectric