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The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
The David W. Fentress Family Letters, 1856-1969
No full textTranscript of a letter by an unidentified author to David Fentress regarding sharing federal newspapers and the banning of federal newspapers in some areas. The author passes on the news of the war including the destruction of the Federal merchantmen by the Confederate fleet. He passes along world news: Russia preparing to go to War with Europe and how that could negatively affect the Confederacy. There is also speculation on the future of the war
Nektar++: Enhancing the capability and application of high-fidelity spectral/hp element methods
No full textNektar++ is an open-source framework that provides a flexible, high-performance and scalable platform for the development of solvers for partial differential equations using the high-order spectral/hp element method. In particular, Nektar++ aims to overcome the complex implementation challenges that are often associated with high-order methods, thereby allowing them to be more readily used in a wide range of application areas. In this paper, we present the algorithmic, implementation and application developments associated with our Nektar++ version 5.0 release. We describe some of the key software and performance developments, including our strategies on parallel I/O, on in situ processing, the use of collective operations for exploiting current and emerging hardware, and interfaces to enable multi-solver coupling. Furthermore, we provide details on a newly developed Python interface that enables a more rapid introduction for new users unfamiliar with spectral/hp element methods, C++ and/or Nektar++. This release also incorporates a number of numerical method developments – in particular: the method of moving frames (MMF), which provides an additional approach for the simulation of equations on embedded curvilinear manifolds and domains; a means of handling spatially variable polynomial order; and a novel technique for quasi-3D simulations (which combine a 2D spectral element and 1D Fourier spectral method) to permit spatially-varying perturbations to the geometry in the homogeneous direction. Finally, we demonstrate the new application-level features provided in this release, namely: a facility for generating high-order curvilinear meshes called NekMesh; a novel new AcousticSolver for aeroacoustic problems; our development of a ‘thick’ strip model for the modelling of fluid–structure interaction (FSI) problems in the context of vortex-induced vibrations (VIV). We conclude by commenting on some lessons learned and by discussing some directions for future code development and expansion
Portrait of author David Foster at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Author David Foster with academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Author David Foster and academic Jeff Doyle at the National Library of Australia, Canberra, 8 June 2011 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author David Foster at the National Library of Australia, Canberra, 8 June 2011.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
David Braithwaite at White Waltham Steam Fair
No full textDavid Braithwaite, fairground enthusiast and author photographed at White Waltham Steam Fair, August 1964
David Zimmer Christmas letter
No full textThis Christmas letter written November 30, 1999, by David Zimmer is titled "Season's Greetings from the last of the Red-Hot-Santas!" It features an illustration of Santa Claus with a guitar, and a summary of Zimmer's year.
David Zimmer (1929-2005) was born in Harrisburg, Ohio. He enlisted in the U.S. Army and served for two years during the Korean War at the Brooke Army Medical Center in San Antonio, where he performed in drag for wounded soldiers. After the war, he returned to Ohio. Zimmer performed as Dolly Divine, a name inspired by the song "Hello Dolly." In 1964, he established the Berwick Ball with Orn Huntington, another important early gay activist in Central Ohio. The Ball began as a formal Halloween costume ball that provided a safe space to gather and enjoy drag shows for the gay community each year; over the years, it grew into an annual Halloween tradition and an important fundraiser for the AIDS movement and other charities. During the 1970s, Zimmer was also known for hosting lavish parties at his Harrisburg home. In 1989, he moved to the German Village area of Columbus where he remained active in the community. During the 1990s, Zimmer continued to perform in and out of drag and commissioned costume designer Dick Frank to make elaborate outfits. Zimmer worked for Huntington National Bank for 39 years and was a member of the Harrisburg United Methodist Church, Veterans of Foreign Wars and the German Village Society
David Zimmer Christmas letter
No full textThis Christmas letter was written December 7, 2004, by David Zimmer. It features a small illustration of Santa Claus, a summary of Zimmer's year, and a clipping from the Village Crier recognizing his 75th birthday celebration.
David Zimmer (1929-2005) was born in Harrisburg, Ohio. He enlisted in the U.S. Army and served for two years during the Korean War at the Brooke Army Medical Center in San Antonio, where he performed in drag for wounded soldiers. After the war, he returned to Ohio. Zimmer performed as Dolly Divine, a name inspired by the song "Hello Dolly." In 1964, he established the Berwick Ball with Orn Huntington, another important early gay activist in Central Ohio. The Ball began as a formal Halloween costume ball that provided a safe space to gather and enjoy drag shows for the gay community each year; over the years, it grew into an annual Halloween tradition and an important fundraiser for the AIDS movement and other charities. During the 1970s, Zimmer was also known for hosting lavish parties at his Harrisburg home. In 1989, he moved to the German Village area of Columbus where he remained active in the community. During the 1990s, Zimmer continued to perform in and out of drag and commissioned costume designer Dick Frank to make elaborate outfits. Zimmer worked for Huntington National Bank for 39 years and was a member of the Harrisburg United Methodist Church, Veterans of Foreign Wars and the German Village Society
Example files for Discontinuous Galerkin simulation of sliding geometries using a point-to-point interpolation technique
No full text<p>Example files for the Nektar++ framework's ALE solver with sliding interfaces. The solver uses the <em>Discontinuous Galerkin method for sliding geometries using a point-to-point interpolation technique</em>. The files are provided in two different formats, tar.bz2 and zip.</p>
<p>Examples are for simulation of compressible flow over a rotating cylinder at Reynolds number Re=200. Test cases are for both fixed and rotating a cylinder with both conformal and non-conformal elements at the sliding interface.</p>
<p>The provided cases consist of two XML input files for each case, which are required to run solvers implemented in Nektar++ framework. The first input file is the mesh file used to define the geometry while the second input file is the conditions file, which defines related parameters and solver information.</p>
<p>The total time is set to 2 seconds for testing purposes, which can be changed to the desired value using the <code>FinTime</code> parameter. Considering the rotating cylinder, we need to define moving domains in the <code>MOVEMENT</code> tag, zones in the <code>ZONE</code> tag, and interfaces in the <code>INTERFACE</code> tag. If a zone is defined as <code>ROTATE</code>, the parameter <code>ORIGIN</code> specifies the Cartesian coordinates of the rotation origin, <code>AXIS</code> specifies the axis of rotation, and <code>ANGVEL</code> specifies the angular velocity in <code>PI</code> radians per second. In addition, necessary parameters and solver information are specified in<code>CONDITIONS</code>, including the boundary and initial conditions. Since we use the compressible solver, the equation type is to <code>NavierStokesCFE</code>. More details about other settings in the session file are illustrated in the user guide of Nektar++, available on website <a href="https://www.nektar.info">https://www.nektar.info</a></p>
<p>In order to run these cases, at least version 5.6.0 of Nektar++ is required. If compiling from source, then before installing, it is necessary to ensure that the CMake options <code>NEKTAR\_USE\_VTK</code> and <code>NEKTAR\_USE\_MPI</code> are enabled, and further instructions can be found in the user guide. Alternatively, docker images are available via the <code>nektarpp/nektar</code> image.</p>
<p>Tests can be run in parallel with for example 24 cores using the command:<br><br><code>mpirun -n 24 CompressibleFlowSolver nonconformal.xml conditions.xml</code><br><br>To visualize the flow field, we can use the built-in post-processing executable<br><code>FieldConvert</code> within Nektar++, using the command<br><br>FieldConvert nonconformal.xml conditions.xml nonconformal.fld output.vtu:vtu:highorder</p>
<p>This command generates a high-order <code>.vtu</code> VTK file that is readable by<br>various open-source packages, such as ParaView.</p>
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