Experimental and numerical parametric analysis of a reoriented duct flow

Date

2016-05-01

Author

Başkan Perçin, Özge
Metcalfe, Guy
Clercx, Herman J. H.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

191
views

0
downloads

This study concerns a coupled experimental-numerical analysis of scalar transport in reoriented duct flows found in industrial mixing processes. To this end the study adopts the Rotated Arc Mixer (RAM) as the representative configuration. The focus is on the effects of geometrical (i.e. reorientation angle Theta) and temporal (i.e. reorientation frequency tau) parameters of generic inline mixing devices on the Lagrangian particle dynamics and scalar field evolution. Lagrangian dynamics are investigated by constructing Poincare sections from analytic flow solutions and stroboscopic measurements of particle positions in 2D RAM laboratory setup. In order to obtain the optimal mixing and homogenization of scalar fields, dye visualizations are performed for an extensive set of parameters. The mixing quality in parameter space is quantitatively evaluated by means of the intensity of segregation. These results are used to determine the optimum forcing protocol. The outcome of this study validates the qualitative agreement in mixing characteristics of 2D time-periodic and 3D spatially-periodic flows and confirms the good mixing performance found before for certain RAM configurations. Moreover, we demonstrate that even more efficient protocols can be devised by suitably tuning the sequence of the reorientation angle. This knowledge might eventually lead to optimized 3D reoriented duct flow mixers. (C) 2016 Elsevier Masson SAS. All rights reserved.

Subject Keywords

Mathematical Physics, General Physics and Astronomy

URI

https://hdl.handle.net/11511/57165

Journal

EUROPEAN JOURNAL OF MECHANICS B-FLUIDS

DOI

https://doi.org/10.1016/j.euromechflu.2016.01.004

Collections

Department of Aerospace Engineering, Article

Suggestions

OpenMETU
Core

Experimental Study on the Effects of Winglets on the Performance of Two Interacting Horizontal Axis Model Wind Turbines Ostovan, Y.; Uzol, Oğuz (2016-10-07) The focus of this experimental study is to investigate the effects of winglets on the performance of two interacting similar horizontal axis model wind turbines. For this purpose, a downwind winglet is designed and manufactured to be attached to the blade tips of the upstream turbine. A set of wing extensions with the same length as the winglets is also produced to be compared to the winglets. Power and thrust coefficients of both turbines are measured with winglets as well as with wing extensions attached ...
Progressive changes in surface structure and electronic properties on Si(001) surface by CaF2 adsorption Alzahrani, A. Z.; Usanmaz, D. (AIP Publishing, 2011-06-15) Ab initio calculations, based on pseudopotentials and density functional theory, have been performed to investigate the atomic geometry and electronic structures of calcium fluoride (CaF2) on the Si(001) surface. We have considered the experimentally observed (2 x 1) and (3 x 1) reconstructions with different bonding configurations of the CaF2 molecule on the Si(001) surface. Our total energy calculations suggest that the (3 x 1) structure is slightly more preferable than the (2 x 1). The key structural par...
Parameter Identification in MHD Duct Flow Cauchy Problem using the DRBEM Tezer, Münevver (2018-08-31) In this study, the Hartmann number (Ha) is identified through the inverse formulation of Cauchy problem for magnetohydrodynamic (MHD) flow in a duct with insulated but no-slip or variably slipping walls. The solutions for direct and inverse problems are obtained using the dual reciprocity boundary element method (DRBEM), and Tikhonov regularization with L-curve method is used for solving ill-conditioned linear system of equations resulted from the inverse problem. The velocity and the induced magnetic field...
Analysis of the orientational order parameter and the magnetic field as functions of temperature for p-anisaldazine Yurtseven, Hasan Hamit (Korean Physical Society, 2016-06-01) We analyze in this study the orientational order parameter and the magnetic field as functions of temperature close to the nematic-isotropic liquid (NI) transition in anisaldazine. The experimental data from the literature are analyzed by using a power-law formula for both the orientational order parameter and the magnetic field, and the critical exponents are deduced. In particular, the mean field value of beta = 0.5 for the critical exponent of the orientational order parameter is used, and the power-law ...
Studies of Charm Quark Diffusion inside Jets Using Pb-Pb and pp Collisions at root s(NN)=5.02 TeV Sirunyan, A. M.; et. al. (American Physical Society (APS), 2020-09-01) The first study of charm quark diffusion with respect to the jet axis in heavy ion collisions is presented. The measurement is performed using jets with p(T)(jet) > 60 GeV/c and D-0 mesons with p(T)(D) > 4 GeV/c in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of root s(NN) = 5.02 TeV, recorded by the CMS detector at the LHC. The radial distribution of D-0 mesons with respect to the jet axis is sensitive to the production mechanisms of the meson, as well as t...

Citation Formats

Ö. Başkan Perçin, G. Metcalfe, and H. J. H. Clercx, “Experimental and numerical parametric analysis of a reoriented duct flow,” EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, pp. 1–14, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57165.