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Progress Toward Efficient Laminar Flow Analysis and Design

Campbell, Richard L. and Campbell, Matthew L. and Streit, Thomas (2011) Progress Toward Efficient Laminar Flow Analysis and Design. 29th AIAA Applied Aerodynamics Conference, 27 - 30 June 2011, Honolulu, Hawaii, USA.

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Official URL: http://www. aiaa.com


A multi-fidelity system of computer codes for the analysis and design of vehicles having extensive areas of laminar flow is under development at the NASA Langley Research Center. The overall approach consists of the loose coupling of a flow solver, a transition prediction method and a design module using shell scripts, along with interface modules to prepare the input for each method. This approach allows the user to select the flow solver and transition prediction module, as well as run mode for each code, based on the fidelity most compatible with the problem and available resources. The design module can be any method that designs to a specified target pressure distribution. In addition to the interface modules, two new components have been developed: 1) an efficient, empirical transition prediction module (MATTC) that provides n-factor growth distributions without requiring boundary layer information; and 2) an automated target pressure generation code (ATPG) that develops a target pressure distribution that meets a variety of flow and geometry constraints. The ATPG code also includes empirical estimates of several drag components to allow the optimization of the target pressure distribution. The current system has been developed for the design of subsonic and transonic airfoils and wings, but may be extendable to other speed ranges and components. Several analysis and design examples are included to demonstrate the current capabilities of the system.

Item URL in elib:https://elib.dlr.de/74448/
Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:AIAA 2011-3527
Title:Progress Toward Efficient Laminar Flow Analysis and Design
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Campbell, Richard L.NASA Langley Research CenterUNSPECIFIED
Campbell, Matthew L.Independent ConsultantUNSPECIFIED
Streit, Thomasth.streit (at) dlr.deUNSPECIFIED
Date:June 2011
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Natural laminar flow, inverse design, efficient empirical transition prediction, automatic laminar pressure target prediction method, drag components, subsonic and transonic airfoils, wings
Event Title:29th AIAA Applied Aerodynamics Conference
Event Location:Honolulu, Hawaii, USA
Event Type:international Conference
Event Dates:27 - 30 June 2011
Organizer:AIAA (American Institute of Aeronautics and Astronautics)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Streit, Dr.rer.nat. Thomas
Deposited On:24 Jan 2012 10:05
Last Modified:24 Jan 2012 10:05

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