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Open AccessArticle

Database of Near-Wall Turbulent Flow Properties of a Jet Impinging on a Solid Surface under Different Inclination Angles

1
Institute of Energy and Power Plant Technology, Technische Universität Darmstadt, 64287 Darmstadt, Germany
2
Institute of Reactive Flows and Diagnostics, Technische Universität Darmstadt, 64287 Darmstadt, Germany
*
Author to whom correspondence should be addressed.
Received: 27 November 2017 / Revised: 18 December 2017 / Accepted: 25 December 2017 / Published: 2 January 2018
(This article belongs to the Special Issue Turbulence: Numerical Analysis, Modelling and Simulation)
In the present paper, direct numerical simulation (DNS) and particle image velocimetry (PIV) have been applied complementarily in order to generate a database of near-wall turbulence properties of a highly turbulent jet impinging on a solid surface under different inclination angles. Thereby, the main focus is placed on an impingement angle of 45 , since it represents a good generic benchmark test case for a wide range of technical fluid flow applications. This specific configuration features very complex flow properties including the presence of a stagnation point, development of the shear boundary layer and strong streamline curvature. In particular, this database includes near-wall turbulence statistics along with mean and rms velocities, budget terms in the turbulent kinetic energy equation, anisotropy invariant maps, turbulent length/time scales and near-wall shear stresses. These properties are useful for the validation of near-wall modeling approaches in the context of Reynolds-averaged Navier–Stokes (RANS) and large-eddy simulations (LES). From this study, in which further impingement angles ( 0 , 90 ) have been considered in the experiments only, it turns out that (1) the production of turbulent kinetic energy appears negative at the stagnation point for an impingement angle other than 0 and is balanced predominantly by pressure-related diffusion, (2) quasi-coherent thin streaks with large characteristic time scales appear at the stagnation region, while the organization of the flow is predominantly toroidal further downstream, and (3) near-wall shear stresses are low at the stagnation region and intense in regions where the direction of the flow changes suddenly. View Full-Text
Keywords: database; impinging jet; direct numerical simulation; particle image velocimetry database; impinging jet; direct numerical simulation; particle image velocimetry
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MDPI and ACS Style

Ries, F.; Li, Y.; Rißmann, M.; Klingenberg, D.; Nishad, K.; Böhm, B.; Dreizler, A.; Janicka, J.; Sadiki, A. Database of Near-Wall Turbulent Flow Properties of a Jet Impinging on a Solid Surface under Different Inclination Angles. Fluids 2018, 3, 5. https://doi.org/10.3390/fluids3010005

AMA Style

Ries F, Li Y, Rißmann M, Klingenberg D, Nishad K, Böhm B, Dreizler A, Janicka J, Sadiki A. Database of Near-Wall Turbulent Flow Properties of a Jet Impinging on a Solid Surface under Different Inclination Angles. Fluids. 2018; 3(1):5. https://doi.org/10.3390/fluids3010005

Chicago/Turabian Style

Ries, Florian; Li, Yongxiang; Rißmann, Martin; Klingenberg, Dario; Nishad, Kaushal; Böhm, Benjamin; Dreizler, Andreas; Janicka, Johannes; Sadiki, Amsini. 2018. "Database of Near-Wall Turbulent Flow Properties of a Jet Impinging on a Solid Surface under Different Inclination Angles" Fluids 3, no. 1: 5. https://doi.org/10.3390/fluids3010005

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