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Body-fitted topology optimization of 2D and 3D fluid-to-fluid heat exchangers
- Source :
- Computer Methods in Applied Mechanics and Engineering, Computer Methods in Applied Mechanics and Engineering, Elsevier, 2021, 376, pp.113638. ⟨10.1016/j.cma.2020.113638⟩, Computer Methods in Applied Mechanics and Engineering, 2021, 376, pp.113638. ⟨10.1016/j.cma.2020.113638⟩
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- International audience; We present a topology optimization approach for the design of fluid-to-fluid heat exchangers which rests on an explicit meshed discretization of the phases at stake, at every iteration of the optimization process. The considered physical situations involve a weak coupling between the Navier-Stokes equations for the velocity and the pressure in the fluid, and the convection-diffusion equation for the temperature field. The proposed framework combines several recent techniques from the field of shape and topology optimization, and notably a level-set based mesh evolution algorithm for tracking shapes and their deformations , an efficient optimization algorithm for constrained shape optimization problems, and a numerical method to handle a wide variety of geometric constraints such as thickness constraints and non-penetration constraints. Our strategy is applied to the optimization of various types of heat exchangers. At first, we consider a simplified 2D cross-flow model where the optimized boundary is the section of the hot fluid phase flowing in the transverse direction, which is naturally composed of multiple holes. A minimum thickness constraint is imposed on the cross-section so as to account for manufacturing and maximum pressure drop constraints. In a second part, we optimize the design of 2D and 3D heat exchangers composed of two types of fluid channels (hot and cold), which are separated by a solid body. A non-mixing constraint between the fluid components containing the hot and cold phases is enforced by prescribing a minimum distance between them. Numerical results are presented on a variety of test cases, demonstrating the efficiency of our approach in generating new, realistic, and unconventional heat exchanger designs.
- Subjects :
- Convective heat transfer
Discretization
geometric constraints
Computer science
Computational Mechanics
General Physics and Astronomy
010103 numerical & computational mathematics
01 natural sciences
Shape and topology optimization
Heat exchanger
heat exchangers
[MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP]
Shape optimization
0101 mathematics
Mechanical Engineering
Numerical analysis
Topology optimization
Mechanics
non-mixing constraint
Computer Science Applications
010101 applied mathematics
Test case
convective heat transfer
Mechanics of Materials
Solid body
[MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA]
Subjects
Details
- Language :
- English
- ISSN :
- 00457825
- Database :
- OpenAIRE
- Journal :
- Computer Methods in Applied Mechanics and Engineering, Computer Methods in Applied Mechanics and Engineering, Elsevier, 2021, 376, pp.113638. ⟨10.1016/j.cma.2020.113638⟩, Computer Methods in Applied Mechanics and Engineering, 2021, 376, pp.113638. ⟨10.1016/j.cma.2020.113638⟩
- Accession number :
- edsair.doi.dedup.....feb0a4f0084599c7c36ee1c332c5d7e1