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2010 DoD High Performance Computing Modernization Program Users Group Conference

14-17 June 2010

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  • [Front cover]

    Publication Year: 2010, Page(s): C1
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  • [Title page i]

    Publication Year: 2010, Page(s): i
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  • [Title page iii]

    Publication Year: 2010, Page(s): iii
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  • Copyright (c) 2011 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.

    Publication Year: 2010, Page(s): iv
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  • Table of contents

    Publication Year: 2010, Page(s):v - xi
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  • Editor's Preface

    Publication Year: 2010, Page(s):xii - xiv
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  • Conference Committee

    Publication Year: 2010, Page(s): xv
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  • Reviewers

    Publication Year: 2010, Page(s): xvi
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  • Numerical Modeling of Turbulent, Parallel, Round Jets

    Publication Year: 2010, Page(s):3 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    Although extensive research has been conducted for turbulent single and offset wall jets, relatively little research has been conducted for turbulent parallel jets. Relevant applications include burners, boilers, film cooling, fuel-injection, heating and air-conditioning systems, and designs for pollutant exhaust stacks. The objective of the present work is to evaluate the use of Reynolds-averaged... View full abstract»

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  • The Advantages and Costs of Higher-Fidelity Turbulence Modeling

    Publication Year: 2010, Page(s):8 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    This paper compares the results and the computational efficiency of a research code with that of a commercial code on the same problem. The research code (REACT-MB) is tested using its unsteady hybrid large-eddy simulation/Reynolds-averaged Navier-Stokes (LES/RANS) method as well as a more common steady-state Menter RANS method. CFD++ of Metacomp is tested on the same problem using its realizable ... View full abstract»

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  • Large-Scale Computations of Unsteady Forces on Marine Vehicles

    Publication Year: 2010, Page(s):12 - 19
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1384 KB) | HTML iconHTML

    Despite efforts to maintain streamlined shapes for minimal resistance and noise, US Navy marine vehicles oftentimes must have bluff body geometries or must operate in off-design modes. These situations produce separated flows that are unsteady. At large scales the flow unsteadiness may be the cause of structural concerns while the entire range of fluid dynamic scales, from large to small, may be t... View full abstract»

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  • Analysis of External and Internal Aero-propulsive Phenomena in Hypersonic Vehicles

    Publication Year: 2010, Page(s):20 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (317 KB) | HTML iconHTML

    Several parallel efforts were initiated in the first year of the Challenge Project C4D with the goal of computing and understanding the main aero-propulsive phenomena that dominate hypersonic flight. For external transition, stability analyses were performed for the HIFiRE Flight 1. A 7 degree sphere-cone fore body was employed to determine likely transition characteristics and location at differe... View full abstract»

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  • High-Fidelity Computations for Flexible Micro Air Vehicle Applications

    Publication Year: 2010, Page(s):26 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (655 KB) | HTML iconHTML

    Implicit large-eddy simulation (ILES) computations have been performed for canonical problems associated with flexible, flapping-wing micro air vehicles (MAVs). This computationally-intensive approach, which is able to directly model laminar/transitional/turbulent flow fields, requires the use of the best high performance computational platforms available. Results for the direct numerical simulati... View full abstract»

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  • Investigation of Boundary-Layer Separation for Lifting Surfaces

    Publication Year: 2010, Page(s):35 - 44
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (881 KB) | HTML iconHTML

    Flow separation from lifting surfaces such as airfoils is undesirable as it deteriorates performance. For example, when airfoils that are designed for large Reynolds numbers are operated at smaller off-design Reynolds numbers, laminar separation can occur. Laminar separation typically leads to transition and reattachment. Transition is influenced by factors, such as free-stream turbulence and wall... View full abstract»

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  • Investigation of Three-Dimensional Internal and External Flow Separation

    Publication Year: 2010, Page(s):45 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1103 KB) | HTML iconHTML

    Flow separation is always three-dimensional despite the fact that most of the past research has focused on two-dimensional separation. The three-dimensional character of separation is particularly relevant when low-aspect ratio geometries are considered. Separation is often associated with unsteadiness, which is caused by large coherent structures that are a consequence of hydrodynamic instability... View full abstract»

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  • A Dual-Mesh Simulation Strategy for Improved AV-8B Empennage Buffet Load Prediction

    Publication Year: 2010, Page(s):54 - 63
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1553 KB) | HTML iconHTML

    This paper describes the efforts to model full three-dimensional unsteady loads due to aerodynamic, and engine exhaust effects for an AV-8B aircraft model. This study utilizes USM3D for baseline comparison, and a CREATE-AV product - Helios - to transition into an engineering prediction tool. The comparative advantages of the different aerodynamic load predict in codes involved, and the capability ... View full abstract»

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  • Computational Naval Ship Hydrodynamics

    Publication Year: 2010, Page(s):64 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1013 KB) | HTML iconHTML

    The primary purpose of our research efforts is to improve naval design and detection capabilities. Our current research efforts leverage high performance computing (HPC) resources to perform high-resolution numerical simulations with hundreds-of-millions to billions of unknowns to study wave breaking behind a transom stern, wave-impact loading, the generation of spray by high-speed planing craft, ... View full abstract»

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  • A Comparison of Wavelet-Based Schemes for Parameter Estimation

    Publication Year: 2010, Page(s):71 - 76
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (617 KB) | HTML iconHTML

    We present the numerical performance of orthogonal and biorthogonal wavelet-based parameterization schemes for solving parameter estimation problems for finding a global solution using the Simultaneous Perturbation Stochastic Approximation (SPSA) algorithm. The two schemes are tested on a two-phase flow problem using the Integrated Parallel Accurate Reservoir Simulators (IPARS) simulator in MATLAB... View full abstract»

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  • Computational Modeling of Geometrically-Complex Weapons Bays

    Publication Year: 2010, Page(s):77 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (542 KB) | HTML iconHTML

    A computational study of the weapons bay acoustics characteristics on a geometry representative of the F-35 is currently underway to support the development of possible "control" strategies for the reduction of dynamic pressure loads in the weapons bay. Initial computations evaluate the wind-tunnel model design and establish a baseline of what is expected during the wind-tunnel testing. Computatio... View full abstract»

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  • Parallelization of a Vector-Optimized 3-D Flow Solver for Multi-core Node Clusters

    Publication Year: 2010, Page(s):83 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (459 KB) | HTML iconHTML

    In this paper, we describe the development of a parallel version of the IR3D (Incompressible Realistic 3-D) code, which simulates the environmental effects on the evolution of vortices trailing behind control surfaces of underwater vehicles. The objective of the project was to parallelize and optimize the existing implementation for clusters of multi-core nodes. The primary motivation was to reduc... View full abstract»

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  • Simulation of Combustion of C/B Clouds in Explosions

    Publication Year: 2010, Page(s):89 - 95
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1415 KB) | HTML iconHTML

    We have developed adaptive high-resolution methods for numerical simulations of turbulent combustion of chemical/biological (C/B) clouds in thermobaric explosions. The code is based on our AMR (Adaptive Mesh Refinement) technology that was used successfully to simulate distributed energy release in explosions, such as: afterburning in TNT explosions and turbulent combustion of Shock-Dispersed Fuel... View full abstract»

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  • Use of Time-Accurate CFD for Inlet-Fan Interaction

    Publication Year: 2010, Page(s):96 - 103
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (818 KB) | HTML iconHTML

    The Compressor Aerodynamics Research Laboratory at Wright-Patterson Air Force Base is currently investigating, experimentally and numerically, the effects of inlet distortion on transonic fan performance. The experimental investigation will quantify the flowfield for a cold-tested diffuser-fan with distortion screens, and a coupled diffuser-fan system. Each of these experiments will be mirrored nu... View full abstract»

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  • Use of the NRL DHPI System to Transfer Dispersion Nomograf Capabilities to the Field

    Publication Year: 2010, Page(s):104 - 108
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    As the ability to generate Dispersion Nomografs™ on the Dedicated High Performance Computing Project Investment (DHPI)-provided machine matures, the focus of this project has moved to the transition of CT-Analyst. CT-Analyst provides near-instantaneous urban plume prediction with unprecedented accuracy and ease. This paper will focus on the transition efforts to deploy CT-Analyst's unique D... View full abstract»

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  • Computational Analysis for Air/Ship Integration: 1st Year Report

    Publication Year: 2010, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (786 KB) | HTML iconHTML

    This paper documents the accomplishments from the first year of a three-year Grand Challenge Project focusing on the application of computational fluid dynamics (CFD) to predict coupled ship and aircraft aerodynamics. Unstructured chimera techniques were used to simulate the coupled ship and aircraft systems. Dynamic aircraft maneuvers were prescribed with the intention of building to simulations ... View full abstract»

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  • Advancing State-of-the-Art Unsteady, Multidisciplinary Rotorcraft Simulations

    Publication Year: 2010, Page(s):115 - 122
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB) | HTML iconHTML

    To address the complex multidisciplinary nature of rotorcraft analysis, high-fidelity computational fluid and structural dynamics models have been developed to investigate a range of challenging rotorcraft issues. First, an advanced technology, active flap rotor (Boeing SMART) is investigated, and performance, aerodynamic and structural loads, vibration, noise prediction and flow physics mechanism... View full abstract»

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