A comparison of adjoint-based optimizations for industrial pipe flow
Paper i proceeding, 2014

This paper presents results from adjoint-based optimization processes applied to an inlet pipe of an exhaust gas recirculation cooler in a diesel engine. The boundary conditions applied resemble those of a truck at cruising speed. Three implementations are considered for the gradient calculations with the objective of minimizing the total pressure drop through the pipe. In the first implementation the gradients are evaluated with respect to the motion of the center of the cell using a newly presented implementation based on the ALE formulation of the Navier-Stokes equations. The results are compared to the surface sensitivities, where the gradient of the cost function is evaluated with respect to the normal motion of the surface of the pipe. In the last approach a topological optimization is performed where the gradients are evaluated with respect to a momentum loss in each cell. This gives information that is used when blocking the cells.

Författare

EYSTEINN HELGASON

Chalmers, Tillämpad mekanik, Strömningslära

Sinisa Krajnovic

Chalmers, Tillämpad mekanik, Strömningslära

Proceedings of the 4th Joint US-European Fluids Engineering Summer Meeting, Chicago, United States, 3-7 August 2014

0888-8116 (ISSN)

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Energi

Ämneskategorier

Farkostteknik

Strömningsmekanik och akustik

DOI

10.1115/FEDSM2014-21542

ISBN

978-079184623-0