![]() #Mmass source code softwareFEHM Homepage įEHM is distributed as as open-source software under a BSD 3-Clause License. In addition to these standard methods, an option to use FE for flow is available, as well as a simple Finite Difference scheme. The numerical method used in FEHM is the control volume method (CV) for fluid flow and heat transfer equations which allows FEHM to exactly enforce energy/mass conservation while an option is available to use the finite element (FE) method for displacement equations to obtain more accurate stress calculations. Subsurface physics has ranged from single fluid/single phase fluid flow when simulating basin scale groundwater aquifers to complex multifluid/ multi-phase fluid flow that includes phase change with boiling and condensing in applications such as unsaturated zone surrounding nuclear waste storage facility or leakage of CO2/brine through faults or wellbores. FEHM has proved to be a valuable asset on a variety of projects of national interest including Environmental Remediation of the Nevada Test Site, the LANL Groundwater Protection Program, geologic CO2 sequestration, Enhanced Geothermal Energy (EGS) programs, Oil and Gas production, Nuclear Waste Isolation, and Arctic Permafrost. Today FEHM is used to simulate groundwater and contaminant flow and transport in deep and shallow, fractured and un-fractured porous media throughout the US DOE complex. ![]() The primary use over a number of years was to assist in the understanding of flow fields and mass transport in the saturated and unsaturated zones below the potential Yucca Mountain repository. #Mmass source code codeThe numerical background of the FEHM computer code can be traced to the early 1970s when it was used to simulate geothermal and hot dry rock reservoirs. Exporters should examine these updates to determine whether the changes alert the classification of their products.FEHM: Finite Element Heat and Mass Transfer Code The amendments modify about two dozen Export Control Classification Numbers (ECCNs) in CCL Categories 0-3, 5 (Part 2), 6, and 9. Wassenaar Arrangement updatesĪlso included in today’s amendments are technical updates to the CCL agreed to at the December 2019 WA Plenary meeting. Pursuant to today’s updates, these items will be eligible for export following self-classification, but will be subject to an annual reporting requirement. These items, including certain chips, chipsets, electronic assemblies, field programmable logic devices, and associated executable software, previously required the submission of a formal classification request to BIS before they could be exported as mass market items. Under the revised rules, annual reports will only be required for a limited set of mass market items described in § 740.17(e)(3). Today’s amendment eliminates the requirement that exporters submit an annual report to BIS for most “mass market” encryption items (e.g., software and other items generally available for sale to the public). Changes to “mass market” reporting and classification requirements The change should substantially reduce the reporting burden for companies that frequently publish open source software online. government before being formally released from control under the EAR. Under the new rules, only source code that implements proprietary or unpublished encryption must be reported to the U.S. Today’s amendment eliminates the reporting requirement for source code that uses standard cryptography, releasing source code from the EAR’s licensing requirements once the code is published online. ![]() Previously, software source code published online that called, contained, or used encryption functionality often remained subject to the EAR (and its licensing requirements) until the author of the code submitted an email notification report to the U.S. Today’s rule also revises the Commerce Control List (CCL) to implement updates from the December 2019 Wassenaar Arrangement (WA) Plenary meeting. ![]() ![]() Today, the Bureau of Industry & Security (BIS) is amending the Export Administration Regulations (EAR) to eliminate most reporting requirements related to open source encryption software and certain “mass market” encryption items. ![]()
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