Estimation Of Grid Induced Errors In Computational Fluid Dynamics Solutions Using A Discrete Error Transport Equation
Download Estimation Of Grid Induced Errors In Computational Fluid Dynamics Solutions Using A Discrete Error Transport Equation full books in PDF, epub, and Kindle. Read online free Estimation Of Grid Induced Errors In Computational Fluid Dynamics Solutions Using A Discrete Error Transport Equation ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : Brandon Riley Williams |
Publisher | : |
Total Pages | : 84 |
Release | : 2009 |
Genre | : |
ISBN | : |
Download Estimation of Grid-induced Errors in Computational Fluid Dynamics Solutions Using a Discrete Error Transport Equation Book in PDF, Epub and Kindle
Author | : Yuehui Qin |
Publisher | : |
Total Pages | : 392 |
Release | : 2004 |
Genre | : Fluid dynamics |
ISBN | : |
Download Discrete-error-transport Equation for Error Estimation in CFD Book in PDF, Epub and Kindle
Author | : David A. Caughey |
Publisher | : World Scientific |
Total Pages | : 468 |
Release | : 2005 |
Genre | : Science |
ISBN | : 9812565272 |
Download Frontiers of Computational Fluid Dynamics 2006 Book in PDF, Epub and Kindle
The series of volumes to which this book belongs honors contributors who have made a major impact in computational fluid dynamics. This fourth volume in the series is dedicated to David Caughey on the occasion of his 60th birthday. The first volume was published in 1994 and was dedicated to Prof Antony Jameson. The second, dedicated to Earl Murman, was published in 1998. The third volume was dedicated to Robert MacCormack in 2002.Written by leading researchers from academia, government laboratories, and industry, the contributions in this volume present descriptions of the latest developments in techniques for numerical analysis of fluid flow problems, as well as applications to important problems in industry.
Author | : J. Z. Zhu |
Publisher | : |
Total Pages | : 16 |
Release | : 2002 |
Genre | : |
ISBN | : |
Download Error Estimation and Uncertainty Propagation in Computational Fluid Mechanics Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 560 |
Release | : 2003 |
Genre | : Aeronautics |
ISBN | : |
Download 41st AIAA Aerospace Sciences Meeting & Exhibit Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 562 |
Release | : 2004 |
Genre | : Aeronautics |
ISBN | : |
Download AIAA Aerospace Sciences Meeting and Exhibit, 42nd Book in PDF, Epub and Kindle
Author | : Ravishankar Balsubramanian |
Publisher | : |
Total Pages | : |
Release | : 2002 |
Genre | : Boundary value problems |
ISBN | : |
Download Error Estimation and Grid Adaptation for Functional Outputs Using Discrete-adjoint Sensitivity Analysis Book in PDF, Epub and Kindle
Within the design process, computational fluid dynamics is typically used to compute specific quantities that assess the performance of the apparatus under investigation. These quantities are usually integral output functions such as force and moment coefficients. However, to accurately model the configuration, the geometric features and the resulting physical phenomena must be adequately resolved. Due to limited computational resources a compromise must be made between the fidelity of the solution obtained and the available resources. This creates a degree of uncertainty about the error in the computed output functions. To this end, the current study attempts to address this problem for two-dimensional inviscid, incompressible flows on unstructured grids. The objective is to develop an error estimation and grid adaptive strategy for improving the accuracy of output functions from computational fluid dynamic codes. The present study employs a discrete adjoint formulation to arrive at the error estimates in which the global error in the output function is related to the local residual errors in the flow solution via adjoint variables as weighting functions. This procedure requires prolongation of the flow solution and adjoint solution from coarse to finer grids and, thus, different prolongation operators are studied to evaluate their influence on the accuracy of the error correction terms. Using this error correction procedure, two different adaptive strategies may be employed to enhance the accuracy of the chosen output to a prescribed tolerance. While both strategies strive to improve the accuracy of the computed output, the means by which the adaptation parameters are formed differ. The first strategy improves the computable error estimates by forming adaptation parameters based on the level of error in the computable error estimates. A grid adaptive scheme is then implemented that takes into account the error in both the primal and dual solutions. The second strategy uses the computable error estimates as indicators in an iterative grid adaptive scheme to generate grids that produce accurate estimates of the chosen output. Several test cases are provided to demonstrate the effectiveness and robustness of the error correction procedure and the grid adaptive methods.
Author | : |
Publisher | : |
Total Pages | : 652 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author | : Iowa State University |
Publisher | : |
Total Pages | : 492 |
Release | : 2008 |
Genre | : Commencement ceremonies |
ISBN | : |
Download Commencement Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2002 |
Genre | : |
ISBN | : |
Download ERROR ESTIMATION AND GRID ADAPTATION FOR FUNCTIONAL OUTPUTS USING DISCRETE-ADJOINT SENSITIVITY ANALYSIS. Book in PDF, Epub and Kindle
Within the design process, computational fluid dynamics is typically used to compute specific quantities that assess the performance of the apparatus under investigation. These quantities are usually integral output functions such as force and moment coefficients. However, to accurately model the configuration, the geometric features and the resulting physical phenomena must be adequately resolved. Due to limited computational resources a compromise must be made between the fidelity of the solution obtained and the available resources. This creates a degree of uncertainty about the error in the computed output functions. To this end, the current study attempts to address this problem for two-dimensional inviscid, incompressible flows on unstructured grids. The objective is to develop an error estimation and grid adaptive strategy for improving the accuracy of output functions from computational fluid dynamic codes. The present study employs a discrete adjoint formulation to arrive at the error estimates in which the global error in the output function is related to the local residual errors in the flow solution via adjoint variables as weighting functions. This procedure requires prolongation of the flow solution and adjoint solution from coarse to finer grids and, thus, different prolongation operators are studied to evaluate their influence on the accuracy of the error correction terms. Using this error correction procedure, two different adaptive strategies may be employed to enhance the accuracy of the chosen output to a prescribed tolerance. While both strategies strive to improve the accuracy of the computed output, the means by which the adaptation parameters are formed differ. The first strategy improves the computable error estimates by forming adaptation parameters based on the level of error in the computable error estimates. A grid adaptive scheme is then implemented that takes into account the error in both the primal and dual solutions. The second stra.