Topology optimization for unsteady flow

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Topology Optimization of Turbulent Flows (2018, methodology): “Later optimizations of laminar flow problems using Navier-Stokes equations and Lattice Boltzmann methods have been demonstrated in [5, 6, 7] and [8, 9, 10], respectively.”
Large scale three-dimensional topology optimisation of heat sinks cooled by natural convection (2015, methodology): “Topology optimisation for fluid systems began with the treatment of Stokes flow in the seminal article by Borrvall and Petersson [19] and has since been applied to Navier-Stokes [20], as well as passive transport problems [21, 22], reactive flows [23], transient flows [24, 25, 26], fluid-structure i”
Level set topology optimization of structural problems with interface cohesion (2017, methodology): “For the sensitivity analysis, we adopt a discrete formulation similar to that used by [63, 75], which can be readily evaluated from the governing equations of the design problem.”
A survey of structural and multidisciplinary continuum topology optimization: post 2000 (2014, methodology): “By including inertial effects, Gersborg-Hansen et al. (2005) and Kreissl et al. (2011) focused on topology optimization of incom- pressible Navier-Stokes flow at low Reynolds numbers for channels while Oleson et al. (2006) utilized a similar formulation along with the commercial tool FEMLAB.”