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Fiscaletti, D. (author), Westerweel, J. (author), Elsinga, G.E. (author)The investigation of flows at high Reynolds number is of great interest for the theory of turbulence, in that the large and the small scales of turbulence show a clear separation. But, as the Reynolds number of the flow increases, the size of the Kolmogorov length scale ( ? ) drops almost proportionally. Aiming at achieving the adequate spatial...journal article 2014
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Deng, W. (author), Hoekstra, J.S.C.M. (author), Elsinga, M.G. (author)This paper reviews the housing policy of China from 1949-2013. It examines the housing tenure change, policy instruments, and impacts social structures in different time periods. After the welfare period of 1949-77, the dual provision period of 1978-1998, and the market dominant period of 1999-2011, China’s housing policy was again reformed...conference paper 2014
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Goudar Vishwanathappa, M. (author), Elsinga, G.E. (author)We explore the mechanisms behind vortical structural interactions modifying largescale structures in wall turbulence. The evidence for this in terms of vortex interactions, such as merging and intense vortex strengthening, is found in [4] in ideal flow conditions. Here, these interactions are studied experimentally and numerically in turbulent...journal article 2014
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Wei, L. (author), Elsinga, G.E. (author), Brethouwer, G. (author), Schlatter, P. (author), Johansson, A.V. (author)The Reynolds number scaling of flow topology in the eigenframe of the strain-rate tensor is investigated for wall-bounded flows, which is motivated by earlier works showing that such topologies appear to be qualitatively universal across turbulent flows. The databases used in the current study are from direct numerical simulations (DNS) of fully...journal article 2014
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Doling, J. (author), Elsinga, M.G. (author), Ronald, R. (author)This book provides an overview of the effects of home ownership, a housing sector that has grown rapidly in recent years in many countries, not least because this is normally encouraged by governments. The first part of the subtitle, ‘Getting in’, refers to processes in the development of the homeownership stock including problems of access,...book 2014
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Gruis, V.H. (author), Elsinga, M.G. (author)Europese regulering voor bevordering van marktwerking heeft in verschillende landen geleld tot jurisprudentie over de voorziening in sociale huisvesting. Veelal wordt erop gewezen dat dit leidt tot spanningen tussen nationaal en Europees beleid, met de Nederlandse corporatiesector als prominent voorbeeld. Analyse van de beschikbare zaken wijst...journal article 2014
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Fiscaletti, D. (author), Elsinga, G.E. (author), Ganapathisubramani, B. (author), Westerweel, J. (author)This work involves the large-scale amplitude and frequency modulation of the small-scale motions in fullydeveloped turbulence of a high Reynolds number jet. The scales responsible for the production of turbulent kinetic energy (large scales), and those responsible for its viscous dissipation (small scales) are extracted from time series of...conference paper 2013
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Tokgoz, S. (author), Elsinga, G.E. (author), Westerweel, J. (author)Time-resolved tomographic PIV was used to investigate the time evolution of turbulent flow structures in Taylor-Couette flow. Turbulence is created by the shear due to exact counter rotation of the cylinders, where the mean velocity is zero in the bulk flow. This enables to observe the structures longer than many other turbulent flow types,...conference paper 2013
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Fiscaletti, D. (author), Elsinga, G.E. (author), Westerweel, J. (author)The present work involves the investigation of the fine scale motions in the turbulent region of a high Reynolds number air jet. In the fully developed region of the jets, the small scales of turbulence are assumed to be isotropic, and expected to contain elongated vortices (worms), whose diameter scales with the Kolmogorov length scale. Aimed...conference paper 2013
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Tokgoz, S. (author), Elsinga, G.E. (author), Westerweel, J. (author)Time-resolved tomographic PIV was used to investigate the time evolution of turbulent flow structures in Taylor-Couette flow. Turbulence is created by the shear due to exact counter rotation of the cylinders, where the mean velocity is zero in the bulk flow. This enables to observe the structures longer than many other turbulent flow types,...conference paper 2013
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Elsinga, G.E. (author)This paper discusses and compares several methods, which aim to remove spurious peaks, i.e. ghost particles, from the volume intensity reconstruction in Tomographic-PIV. The assessment is based on numerical simulations of timeresolved tomographic-PIV experiments in linear shear flows. Within the reconstructed volumes intensity peaks are detected...conference paper 2013
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Elsinga, G.E. (author)This paper discusses and compares several methods, which aim to remove spurious peaks, i.e. ghost particles, from the volume intensity reconstruction in Tomographic-PIV. The assessment is based on numerical simulations of timeresolved tomographic-PIV experiments in linear shear flows. Within the reconstructed volumes intensity peaks are detected...conference paper 2013
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Goudar Vishwanathappa, M. (author), Breugem, W.P. (author), Elsinga, G.E. (author)For channel flow, we explore how a hairpin eddy may reach a threshold strength required to produce additional hairpins by means of auto-generation. This is done by studying the interaction of two eddies with different initial strengths (but both below the threshold strength), initial sizes and initial streamwise spacing between them. The...conference paper 2013
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Eisma, H.E. (author), Elsinga, G.E. (author), Westerweel, J. (author)Interfaces are commonly observed features of turbulent flows. Previous research has indicated the significance of these interfaces on the overall dynamics of the turbulent flow [1]. The current research focuses on both the external Turbulent/Non-Turbulent (T/NT) interface as well as internal layers that are present in an experimentally...conference paper 2013
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- Wei, L (author), Elsinga, G.E. (author), Brethouwer, G (author), Schlatter, P (author), Johansson, AV (author) conference paper 2013
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- Elsinga, M.G. (author) conference paper 2012
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Elsinga, M.G. (author)Waar gaat het heen met de woningcorporaties? De financiële stabiliteit staat onder druk, doelgroep en kerntaken worden geherdefinieerd, het toezicht gaat op de schop. Marja Elsinga schetst een toekomstscenarioconference paper 2012
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- Tokgoz, S. (author), Elsinga, G.E. (author), Delfos, R. (author), Westerweel, J. (author) journal article 2012
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Elsinga, G.E. (author), Westerweel, J. (author)Tomographic-PIV was used to measure the boundary layer transition forced by a zigzag trip. The resulting instantaneous three-dimensional velocity distributions are used to quantitatively visualize the flow structures. They reveal undulating spanwise vortices directly behind the trip, which break up into individual arches and then develop into...journal article 2012
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Elsinga, J. (author), Hooimeijer, F.L. (author), Slob, A. (author)De Deltabeslissing Ruimtelijke Adaptatie richt zich op het verbinden van de wateropgave met ruimtelijke opgaven in gebieden en het op een kwalitatief goede manier ruimte maken voor water. Om deze beslissing te kunnen onderbouwen, werkt het Deltaprogramma Nieuwbouw en Herstructurering langs twee inhoudelijke sporen: ruimtelijke inrichting en...journal article 2012