Improving Energy Efficiency for All: Lessons on sustainable building retrofits from Shanghai, China

Improving the energy efficiency of existing buildings is a critical part of action on climate change. Retrofitting in particular provides benefits to the economy, the environment and society, as well as making significant reductions to operational greenhouse gas emissions. This policy brief looks in detail at the impact of retrofitting schemes...

Comparison of some preconditioners for the incompressible Navier-Stokes equations

In this report we explore the performance of the SIMPLER , augmented Lagrangian, ’grad-div’ preconditioners and their variants for the two-by-two block systems arising in the incompressible Navier-Stokes equations. The lid-driven cavity and flow over a finite flat plate are chosen as the benchmark problems. For each problem Reynolds number...

On preconditioning incompressible non-Newtonian flow problems

This paper deals with fast and reliable numerical solution methods for the incompressible non-Newtonian Navier-Stokes equations. To handle the nonlinearity of the governing equations, the Picard and Newton methods are used to linearize these coupled partial differential equations. For space discretization we use the finite element method and...

An experimental study of hypersonic flow development in a pipe