Searched for: author:"Henkes, R.A.W.M."
(1 - 20 of 20)
document
Sanderse, B. (author), Buist, J.F.H. (author), Henkes, R.A.W.M. (author)
A novel pressure-free two-fluid model formulation is proposed for the simulation of one-dimensional incompressible multiphase flow in pipelines and channels. The model is obtained by simultaneously eliminating the volume constraint and the pressure from the widely used two-fluid model (TFM). The resulting ‘pressure-free two-fluid model’ (PF...
journal article 2021
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Rahbari, A. (author), Brenkman, Jeroen (author), Hens, R. (author), Ramdin, M. (author), van den Broeke, L.J.P. (author), Schoon, Rogier (author), Henkes, R.A.W.M. (author), Moultos, O. (author), Vlugt, T.J.H. (author)
Hydrogen is one of the most popular alternatives for energy storage. Because of its low volumetric energy density, hydrogen should be compressed for practical storage and transportation purposes. Recently, electrochemical hydrogen compressors (EHCs) have been developed that are capable of compressing hydrogen up to P = 1000 bar, and have the...
journal article 2019
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Schutte, K.C.J. (author), Portela, L. (author), Twerda, A. (author), Henkes, R.A.W.M. (author)
We have developed and applied an Eulerian-Lagrangian model for the transport, formation, break-up, deposition and re-entrainment of particle agglomerates. In this paper, we focus on agglomeration and break-up. Simulations were carried out to investigate what changes in the turbulent flow are inflicted by the presence of the agglomerates. Also...
journal article 2018
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van Duin, Erik (author), Henkes, R.A.W.M. (author), Ooms, G. (author)
An experimental study has been made of oil-water core-annular flow in a horizontal pipe with special attention for the influence of the oil viscosity on the pressure drop. For that purpose a heating system has been installed and configured that is able to control the oil temperature, such that the oil viscosity could be varied between 3000 cSt...
journal article 2018
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van Zwieten, J.S.B. (author), Sanderse, B. (author), Hendrix, M.H.W. (author), Vuik, Cornelis (author), Henkes, R.A.W.M. (author)
One-dimensional models for multiphase flow in pipelines are commonly discretised using first-order Finite Volume (FV) schemes, often combined with implicit time-integration methods. While robust, these methods introduce much numerical diffusion depending on the number of grid points. In this paper we propose a high-order, space-time...
journal article 2017
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Ingen Housz, E.M.R.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author), Pourquie, M.J.B.M. (author), Kidess, A. (author), Radhakrishnan, R. (author)
An experimental and numerical study has been made of oil-water core-annular flow in a horizontal pipe with special attention for the turbulence in the water. An experimental set-up was built to be able to compare numerical predictions with detailed experimental results. The oil density was considerably smaller than the water density. Full 3D and...
journal article 2017
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Birvalski, M. (author), Tummers, M.J. (author), Henkes, R.A.W.M. (author)
An experimental study was performed in stratified wavy flow of air and water through a horizontal pipe. The velocity fields in both phases were measured simultaneously using PIV and the interfacial shape was resolved using a profile capturing technique. The objective of the study was to investigate the interfacial characteristics and the...
journal article 2016
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van Nimwegen, A.T. (author), Portela, L. (author), Henkes, R.A.W.M. (author)
In this work, we extend our previous efforts on the effect of surfactants on air-water flow in a vertical pipe by also considering pipe inclinations between 20° (with respect to horizontal) and vertical. For air-water flow, independent of the inclination, there is a regular annular flow at large gas flow rates, and an irregular churn or slug...
journal article 2016
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Van Zwieten, J.S.B. (author), Sanderse, B. (author), Hendrix, M.H.V. (author), Vuik, C. (author), Henkes, R.A.W.M. (author)
One-dimensional models for multiphase flow in pipelines are commonly discretised using first-order Finite Volume (FV) schemes, often combined with implicit time-integration methods. While robust, these methods introduce much numerical diffusion depending on the number of grid points. In this paper we propose a high-order, space-time...
report 2015
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Birvalski, M. (author), Tummers, M. (author), Delfos, R. (author), Henkes, R.A.W.M. (author)
The technique for obtaining detailed velocity fields in a wavy liquid layer in stratified air/water pipe flow is described in this paper. By combining Particle Image Velocimetry (PIV) with an interface detection technique, the velocity field is resolved in the whole liquid layer. Furthermore, since the shape of the interface is resolved at each...
conference paper 2013
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Henkes, R.A.W.M. (author)
public lecture 2010
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Westin, K.J.A. (author), Henkes, R.A.W.M. (author)
Boundary layer transition induced by high levels of free stream turbulence (FSl), so called bypass transition, can not be predicted with conventional stability calculations (e.g. the en-method). The use of turbulence models for transition prediction has shown some success for this type of flows, and the present study is a further investigation...
book 1998
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Henkes, R.A.W.M. (author)
An overview is given on the background of different turbulence models that can be used to compute boundary layers in external aerodynamics, such as for aircraft. The overview includes algebraic models (Cebeci-Smith, Baldwin-Lomax), a half-equation model (Johnson-King), two-equation models ( K-E-K-), and a differential Reynolds-stress model. The...
book 1998
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Henkes, R.A.W.M. (author), Van Ingen, J.L. (author)
The boundary layer along the fuselage, wings and tailplanes of aircraft will usually be laminar at the leading edge and will become unstable further downstream. Once the boundary layer has become unstable it will undergo transition to turbulence. Stability and transition can be considered as one of the most complex problems of fluid dynamics....
book 1998
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Henkes, R.A.W.M. (author), Bakker, R.G. (author)
book 1997
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Westin, K.J.A. (author), Henkes, R.A.W.M. (author)
report 1996
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Henkes, R.A.W.M. (author)
doctoral thesis 1990
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Henkes, R.A.W.M. (author), Veldman, A.E.P. (author)
report 1987
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Henkes, R.A.W.M. (author), Veldman, A.E.P. (author)
It is known that the classical boundary-layer solution breaks down by the appearance of the Goldstein singularity in a steady solution or Van Dommelen's singularity in an unsteady solution. Interaction between the inviscid flow and the boundary layer removes the Goldstein singularity, until a new critical parameter is reached, corresponding to a...
report 1986
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Henkes, R.A.W.M. (author)
report 1985
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