353 citations · 1.2k across the 16 of their papers we have counts for
16 papers
Density-based topology optimization for turbulent fluid flow using the standard k-epsilon RANS model with wall-functions imposed through an implicit wall penalty formulation
Amirhossein Bayat, Hao Li, Joe Alexandersen
Turbulent flows have high requirements for very fine meshes near the boundary to ensure accuracy. In the context of topology optimization (TO), such fine meshes become unrealistic…
Space-time spectral element summation-by-parts method for heterogeneous transient heat conduction arising in topology optimization
Sarah Nataj, Magnus Appel, Joe Alexandersen
We develop a stable space-time spectral element method for transient heat conduction in heterogeneous multi-material domains, motivated by topology optimization. The method treats…
Large-Scale Topology Optimisation of Time-dependent Thermal Conduction Using Space-Time Finite Elements and a Parallel Space-Time Multigrid Preconditioner
Joe Alexandersen, Magnus Appel
This paper presents a novel space-time topology optimisation framework for time-dependent thermal conduction problems, aiming to significantly reduce the time-to-solution. By treat…
Space-Time Multigrid Methods Suitable for Topology Optimisation of Transient Heat Conduction
Magnus Appel, Joe Alexandersen
This paper presents Space-Time MultiGrid (STMG) methods which are suitable for performing topology optimisation of transient heat conduction problems. The proposed methods use a po…
One-shot Parareal Approach for Topology Optimisation of Transient Heat Flow
Magnus Appel, Joe Alexandersen
This paper presents a method of performing topology optimisation of transient heat conduction problems using the parallel-in-time method Parareal. To accommodate the adjoint analys…
Topology optimization of contact-aided thermo-mechanical regulators
Anna Dalklint, Joe Alexandersen, Andreas Henrik Frederiksen +2
Topology optimization is used to systematically design contact-aided thermo-mechanical regulators, i.e. components whose effective thermal conductivity is tunable by mechanical def…
A detailed introduction to density-based topology optimisation of fluid flow problems with implementation in MATLAB
Joe Alexandersen
This article presents a detailed introduction to density-based topology optimisation of fluid flow problems. The goal is to allow new students and researchers to quickly get starte…
Revisiting the origin to bridge a gap between topology and topography optimisation of fluid flow problems
Joe Alexandersen
This paper revisits the origin of topology optimisation for fluid flow problems, namely the Poiseuille-based frictional resistance term used to parametrise regions of solid and flu…
Revisiting the optimal shape of cooling fins: A one-dimensional analytical study using optimality criteria
Joe Alexandersen, Ole Sigmund
This paper revisits the optimal shape problem of a single cooling fin using a one-dimensional heat conduction equation with convection boundary conditions. Firstly, in contrast to…
Topology Optimization of Two Fluid Heat Exchangers
Lukas Christan Høghøj, Daniel Ruberg Nørhave, Joe Alexandersen +2
A method for density-based topology optimization of heat exchangers with two fluids is proposed. The goal of the optimization process is to maximize the heat transfer from one flui…
Topology optimization of heat sinks for instantaneous chip cooling using a transient pseudo-3D thermofluid model
Tao Zeng, Hu Wang, Mengzhu Yang +1
With the increasing power density of electronics components, the heat dissipation capacity of heat sinks gradually becomes a bottleneck. Many structural optimization methods, inclu…
A "poor man's" approach for high-resolution three-dimensional topology optimization of natural convection problems
Nicolo Pollini, Ole Sigmund, Casper Schousboe Andreasen +1
This paper treats topology optimization of natural convection problems. A simplified model is suggested to describe the flow of an incompressible fluid in steady state conditions,…
A "poor man's" approach to topology optimization of natural convection problems
Janus Asmussen, Joe Alexandersen, Ole Sigmund +1
Topology optimization of natural convection problems is computationally expensive, due to the large number of degrees of freedom (DOFs) in the model and its two-way coupled nature.…
Large scale three-dimensional topology optimisation of heat sinks cooled by natural convection
Joe Alexandersen, Ole Sigmund, Niels Aage
This work presents the application of density-based topology optimisation to the design of three-dimensional heat sinks cooled by natural convection. The governing equations are th…
Robust topology optimisation of microstructural details without length scale separation - using a spectral coarse basis preconditioner
Joe Alexandersen, Boyan S. Lazarov
This paper applies topology optimisation to the design of structures with periodic microstructural details without length scale separation, i.e. considering the complete macroscopi…
Topology optimisation for natural convection problems
Joe Alexandersen, Niels Aage, Casper Schousboe Andreasen +1
This paper demonstrates the application of the density-based topology optimisation approach for the design of heat sinks and micropumps based on natural convection effects. The pro…