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   <div id="projectbrief">Code for Particle Tracking simulations in 3D DFN</div>
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<div class="title">dfnTrans /dfnWorks V2.2 License </div>  </div>
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<div class="textblock"><p>This program was prepared at Los Alamos National Laboratory (LANL), Earth and Environmental Sciences Division, Computational Earth Science Group (EES-16), Subsurface Flow and Transport Team. All rights in the program are reserved by the DOE and LANL. Permission is granted to the public to copy and use this software without charge, provided that this Notice and any statement of authorship are reproduced on all copies. Neither the U.S. Government nor LANS makes any warranty, express or implied, or assumes any liability or responsibility for the use of this software.</p>
<p>Contact Information : <a href="#" onclick="location.href='mai'+'lto:'+'dfn'+'wo'+'rks'+'@l'+'anl'+'.g'+'ov'; return false;">dfnwo<span style="display: none;">.nosp@m.</span>rks@<span style="display: none;">.nosp@m.</span>lanl.<span style="display: none;">.nosp@m.</span>gov</a></p>
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License</h1>
<p>LA-CC-17-027</p>
<p>(or copyright) 2018 Triad National Security, LLC. All rights reserved. This program was produced under U.S. Government contract 89233218CNA000001 for Los Alamos National Laboratory (LANL), which is operated by Triad National Security, LLC for the U.S. Department of Energy/National Nuclear Security Administration. All rights in the program are reserved by Triad National Security, LLC, and the U.S. Department of Energy/National Nuclear Security Administration. The Government is granted for itself and others acting on its behalf a nonexclusive, paid-up, irrevocable worldwide license in this material to reproduce, prepare derivative works, distribute copies to the public, perform publicly and display publicly, and to permit others to do so.</p>
<p>The U.S. Government has rights to use, reproduce, and distribute this software. NEITHER THE GOVERNMENT NOR TRIAD NATIONAL SECURITY, LLC MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to produce derivative works, such modified software should be clearly marked, so as not to confuse it with the version available from LANL.</p>
<p>Additionally, this program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Accordingly, this program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.</p>
<p>Additionally, redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p><ol type="1">
<li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
<li>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</li>
<li>Neither the name of Los Alamos National Security, LLC, Los Alamos National Laboratory, LANL, the U.S. Government, nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY LOS ALAMOS NATIONAL SECURITY, LLC AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LOS ALAMOS NATIONAL SECURITY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</li>
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dfnTrans</h1>
<p>First release date is April 1st 2015.</p>
<p>The detail explanation of the technique of Particle Tracking in 3D DFN is published: Makedonska, N., Painter, S. L., Bui, Q. M., Gable, C. W., &amp; Karra, S. (2015). Particle tracking approach for transport in three-dimensional discrete fracture networks. Computational Geosciences, 19(5), 1123-1137.</p>
<p>This code is using velocity reconstruction algorithm: Painter, S.L., Gable, C.W., Kelkar, S. (2012). Pathline tracing on fully unstructured control-volume grids. Comput. Geosci. 16(4), 1125–1134. </p>
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