Searched for: author%3A%22Klapwijk%2C+M.D.%22
(1 - 9 of 9)
document
Klapwijk, M.D. (author), Lloyd, Thomas (author), Vaz, Guilherme (author)
A new partially averaged Navier-Stokes (PANS) closure is derived based on the k-kL (KSKL) model. The aim of this new model is to incorporate the desirable features of the KSKL model, compared to the k-ω shear stress transport model, into the PANS framework. These features include reduced eddy-viscosity levels, a lower dependency on the cell...
journal article 2022
document
Klapwijk, M.D. (author)
There is increasing attention for the effects of anthropogenic underwater radiated noise (URN) on marine fauna. This is expected to lead to regulations with respect to the maximum permitted sound emissions of ships. It is known that cavitating tip vortices, generated by ship propellers, are some of the key contributors to URN. Consequently,...
doctoral thesis 2021
document
Klapwijk, M.D. (author), Lemaire, Sébastien (author)
Increased graphical capabilities of contemporary computer hardware make ray tracing possible for a much wider range of applications. In science, and numerical fluid mechanics in particular, visual inspections still play a key role in both understanding flows, predicted by computational fluid dynamics, exhibiting features observable in real-life,...
journal article 2021
document
Lidtke, Artur K. (author), Klapwijk, M.D. (author), Lloyd, Thomas (author)
Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers. While modelling of this phenomenon is well-established for higher Mach number aerospace problems, lower Mach number applications, which include marine propellers, still...
journal article 2021
document
Klapwijk, M.D. (author), Lloyd, T. (author), Vaz, G. (author), van Terwisga, T.J.C. (author)
The Delft Twist 11 Hydrofoil is a common test case for investigating the interaction between turbulence and cavitation modelling in computational fluid dynamics. Despite repeated investigations, results reported for the lift and drag coefficient are accompanied by significant uncertainties, both in experimental and numerical studies. When...
journal article 2021
document
Klapwijk, M.D. (author), Lloyd, T. (author), Vaz, G. (author), van Terwisga, T.J.C. (author)
Different variable resolution turbulence modelling approaches (Hybrid, Bridging models and LES) are evaluated for turbulent channel flow at Re<sub>τ</sub>=395, for cases using either streamwise periodic boundary conditions or a synthetic turbulence generator. The effect of iterative, statistical and discretisation errors is investigated. For...
journal article 2020
document
Klapwijk, M.D. (author), Lloyd, Thomas (author), Vaz, Guilherme (author), van Terwisga, T.J.C. (author)
<br/>
conference paper 2019
document
Liebrand, Rens (author), Klapwijk, M.D. (author), Lloyd, Thomas (author), Vaz, Guilherme (author), Lopes, Rui (author)
A sensitivity analysis of the transitional flow over a NACA66<sub>2</sub> - 415 foil and the elliptical Arndt wing is carried out. The SST turbulence model is complemented with the ? - Re <sup>~</sup><sub>?t</sub> transition model to determine the effect of varying turbulence intensity and eddy-viscosity ratio on the integral quantities and...
conference paper 2019
document
Klapwijk, M.D. (author), Lloyd, T. (author), Vaz, G. (author)
Partially Averaged Navier–Stokes computations can employ three different approaches for specifying the ratio of modelled-to-total turbulence kinetic energy f<sub>k</sub>. Use can be made of either a constant, a spatially- or a spatially- and temporally-varying value. This work compares different estimates for f<sub>k</sub> found in literature...
journal article 2019
Searched for: author%3A%22Klapwijk%2C+M.D.%22
(1 - 9 of 9)