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  • RPI SCOREC - Transonic Aerodynamics

    (No additional info available in detailed archive for this subpage)
    Original URL path: /TransonicAero.php (2015-07-15)



  • Adaptive Wake Capturing
    aeroelastic computations Vorticity contours can define the wake trajectory As vorticity is computed from the derivative of the primitive velocity variables it is a higher order computation The initial solution requires a refined mesh on the blade surface Additionally in order to compute vorticity in the wake local mesh refinement is necessary This local refinement procedure is carried out by adaptivity methods developed at SCOREC Solutions in the form of

    Original URL path: http://www.scorec.rpi.edu/AdaptiveWake.html (2015-07-15)
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  • Research Activities
    will be used to validate our simulations The process is being tested using pigs due to the similarity of their vascular system to that of humans First a bypass is created around a section of the artery of a healthy pig Then the original arterial section is restricted forcing a greater percentage of the flow to utilize the bypass simulating a bypass of a diseased state Next the aforementioned MRI data is collected Our simulation of this real patient s pig s arterial system is shown in this animation 15Mb As you can see the constriction bypass and pulsatile nature of the flow create rather complex flow patterns In the second animation we zoom 22Mb in on the region close to the constriction and bypass reattachment While visualizing the flow patterns and the pressure field provides some insight into the quality of the bypass more information can be gleaned from these simulations Recent research suggests that the shear stress on the various solids suspended within blood can affect the formation of clots and other arterial blockages Though it is currently impractical to model each solid particle in the blood suspension we can develop transport equations that can keep track of the concentration of these suspensions We can further develop transport equations that keep track of the shear stress history as a function of space and time Then by incorporating models which relate this shear history to the physics of cell adhesion to the vessel walls or to a pre existing adhesion a model for disease location and progression should be possible This model will most likely require information related to the average residence time as a function of space Our preliminary work in this area can be visualized in the following animation 24Mb Here we consider five cardiac cycles from

    Original URL path: http://www.scorec.rpi.edu/~kjansen/BioResearch.html (2015-07-15)
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  • ( MANE 4070 ) Aerodynamics 1 Fall 2009
    to Homeworks Download Homework Format Here FAQ Exam Solutions Office Hours Professor K E Jansen CII 7223 Tuesday 3 30 5 15 and Thursday 3 00 4 15 T A

    Original URL path: http://www.scorec.rpi.edu/~kjansen/AeroD/Fall_09/index.html (2015-07-15)
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  • M Zhou O Sahni H J Kim C A Figueroa C A Taylor M S Shephard and K E Jansen 8220Cardiovascular Flow Simulations at Extreme Scale 8221 Computational Mechanics 46 1 71 82 2010 A Yu Galimov O Sahni R T Lahey M S Shephard D A Drew and K E Jansen 8220Parallel Adaptive Simulation of a Plunging Liquid Jet 8221 Acta Mathematica Scientia 30B 2 522 538 2010 M Zhou O Sahni M S Shephard C D Carothers and K E Jansen 8220Adjacency based Data Reordering Algorithm for Acceleration of Finite Element Computations 8221 Scientific Programming 18 2 107 123 2010 J C Vaccaro O Sahni J Olles K E Jansen and M Amitay 8220Experimental and Numerical Investigation of Active Control of Inlet Ducts 8221 International Journal of Flow Control 1 2 133 154 2009 O Sahni C D Carothers M S Shephard and K E Jansen 8220Strong Scaling Analysis of a Parallel Unstructured Implicit Solver and the Influence of the Operating System Interference 8221 Scientific Programming 17 3 261 274 2009 K Devine L Diachin J Kraftcheck K E Jansen V Leung X Luo M Miller C Ollivier Gooch A Ovcharenko O Sahni M S Shephard T Tautges T Xie and M Zhou 8220Interoperable Mesh Components for Large Scale Distributed Memory Simulations 8221 Journal of Physics Conference Series 180 012011 2009 O Sahni K E Jansen C A Taylor and M S Shephard 8220Automated Adaptive Cardiovascular Flow Simulations 8221 Engineering with Computers 25 1 25 36 2009 O Sahni K E Jansen M S Shephard C A Taylor and M W Beall 8220Adaptive Boundary Layer Meshing for Viscous Flow Simulations 8221 Engineering with Computers 24 3 267 285 2008 M S Shephard K E Jansen O Sahni and L A Diachin 8220Parallel Adaptive Simulations on Unstructured Meshes 8221 Journal of Physics Conference Series 78 012053 2007 O Sahni J Mueller K E Jansen M S Shephard and C A Taylor 8220Efficient Anisotropic Adaptive Discretization of the Cardiovascular System 8221 Computer Methods in Applied Mechanics and Engineering 195 41 43 5634 5655 2006 J Mueller O Sahni X Li K E Jansen M S Shephard and C A Taylor 8220Anisotropic Adaptive Finite Element Method for Modelling Blood Flow 8221 Computer Methods in Biomechanics and Biomedical Engineering 8 5 295 305 2005 Conference Proceedings Published A Ovcharenko K Chitale O Sahni K E Jansen and M S Shephard 8220Parallel Adaptive Boundary Layer Meshing for Adaptive CFD Analysis 8221 Proceedings of the 21st International Meshing Roundtable San Jose CA USA Oct 2012 X Ge J T Wen M Boucher and O Sahni 8220Low Order Model Identification and Controller Design for Active Flow Control 8221 Proceedings of the 2012 AIAA Guidance Navigation and Control Conference Minneapolis MN USA Aug 2012 K Miki R R Upadhyay O Sahni and S H Cheung 8220Bayesian Model Comparison and Selection for Quantifying Uncertainty in Active Graphite Nitridation 8221 Proceedings of the 50th AIAA Aerospace Sciences Meeting and Exhibit Nashville TN USA Jan 2012 J Cardillo Y

    Original URL path: http://www.scorec.rpi.edu/~sahni/publications.html (2015-07-15)
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  • inst phavg vortZ mov and SJ inst vortX speed backplane mov Abdominal aortic aneurysm AAA speed vol render A1 U1 mov Backward facing step BackwardStep clipA mesh mov and BackwardStep

    Original URL path: http://www.scorec.rpi.edu/~sahni/animations.html (2015-07-15)
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  • RPI SCOREC - Technical Reports
    paper presents a definition for multidimensional SBP finite difference operators that is a natural extension of the classical one dimensional SBP definition Theoretical implications of the definition are investigated for the special case of a diagonal norm mass matrix and it is shown that the operators retain the desirable properties of tensor product SBP operators A cubature rule with positive weights is proven to be a necessary and sufficient condition

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=662 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    WIKIS Author Cameron W Smith Ben Matthews Michel Rasquin Kenneth E Jansen Title Performance and Scalability of Unstructured Mesh CFD Workflow on Emerging Architectures Year 2015 Abstract The performance and scalability of an unstructured mesh based CFD workflow on Intel

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=663 (2015-07-15)
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