Body-fitted topology optimization of 2D and 3D fluid-to-fluid heat exchangers

We present a topology optimization approach for the design of fluid-to-fluid heat exchangers which rests on an explicit meshed discretization phases at stake, every iteration process. The considered physical situations involve weak coupling between Navier–Stokes equations velocity and pressure in fluid, convection–diffusion equation temperature field. proposed framework combines several recent techniques from field shape optimization, notably level-set based mesh evolution algorithm tracking shapes their deformations, efficient constrained problems, numerical method to handle wide variety geometric constraints such as thickness non-penetration constraints. Our strategy is applied various types exchangers. At first, we consider simplified 2D cross-flow model where optimized boundary section hot fluid phase flowing transverse direction, naturally composed multiple holes. A minimum constraint imposed cross-section so account manufacturing maximum drop In second part, optimize 3D two channels (hot cold), are separated by solid body. non-mixing components containing cold enforced prescribing distance them. Numerical results presented test cases, demonstrating efficiency our generating new, realistic, unconventional exchanger designs.