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A novel 2D incompressible viscous inverse design method for internal flows using flexible string algorithm

Nili Ahmadabadi, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1115/1.400107
  3. Publisher: 2010
  4. Abstract:
  5. In this investigation, the flexible string algorithm (FSA), used before for inverse design of subsonic and supersonic ducts in compressible flows with and without normal shock, is developed and applied for inverse design of 2D incompressible viscous internal flow with and without separation. In the proposed method, the duct wall shape is changed under an algorithm based on deformation of a virtual flexible string in flow. At each modification step, the difference between current and target wall pressure distributions is applied to the string. The method is an iterative inverse design method and utilizes the analysis code for the flow field solution as a black-box. Some validation test cases and design examples are presented here, which show the robustness and flexibility of the method in handling complex geometries. In cases with separated flow pressure distribution, a unique solution for inverse design problem does not exist. The design algorithm is a physical and quick converging approach and can efficiently utilize commercial flow analysis software
  6. Keywords:
  7. 2D ducts ; Flexible string algorithm ; Inverse design ; Viscous incompressible flows ; Black boxes ; Complex geometries ; Duct walls ; Flow analysis ; Internal flows ; Inverse design methods ; Inverse designs ; Separated flows ; String algorithms ; Supersonic duct ; Validation test ; Wall-pressure distribution ; Algorithms ; Ducts ; Incompressible flow ; Pressure distribution ; Design
  8. Source: Journal of Fluids Engineering, Transactions of the ASME ; Volume 132, Issue 3 , 2010 , Pages 0314011-03140110 ; 00982202 (ISSN)
  9. URL: http://fluidsengineering.asmedigitalcollection.asme.org/article.aspx?articleid=1433423