Guglielmo VivarelliImperial College London | Imperial · Department of Aeronautics
High-order technology for turbomachinery applications
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Citations since 2016
7 Research Items
Within the literature, there are limited high-order results concerning large Reynolds number flows under the influence of strong adverse pressure gradients, mainly due to the computational expense involved. The main advantage in employing high-order methodologies over standard second-order finite-volume solvers, relates to their ability to increase...
In this work a high-order spectral-h/p element solver is employed to efficiently but accurately resolve the flow field around the NACA0012 aerofoil. In particular, the conditions considered are a Reynolds number of 150000 and three angles of attack, namely 9◦, 10◦ and 12◦. This particular study aims at providing the necessary preliminary insight in...
Computational Fluid Dynamics (CFD) discretisation errors are generally present in any simulation result, with the main issues lying in the mesh generation stage. Despite this, CFDsoftware has widespread use in the industrial design procedure. To improve modelling reliability, mesh adaptation proposes to automatically modify grids to better their ac...
The benefit of mesh adaptation to improve the optimisation process of turbomachinery components is here demonstrated. Mesh movement is used to automatically cluster and align the cells with significant flow features such as shocks, shock-induced separation and wakes for every geometry tested during a transonic compressor blade optimisation. Using m...
Summar Nowadays, aerodynamic computational modelling is carried out on a daily basis in an industrial setting. This is done with the aim of predicting the performance and flow characteristics of new components. However, limited resources in terms of time and hardware force the engineer to employ relatively coarse computational grids, thus achieving...
Within an industrial setting, mesh adaptation has so far found very limited use. This is, in part, due to the complexity of the geometries and flow features that are to be dealt with. However, the successful utilisation of grid modification techniques, could help engineers achieve more accurate estimates of quantities of interest quickly and effici...