Interaction theory of hypersonic laminar near-wake flow behind an adiabatic circular cylinder

Hinman, W. Schuyler; Johansen, Craig T.

doi:10.1007/s00193-015-0615-y

Cited by 19 publications

(2 citation statements)

References 40 publications

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“…Obviously, an increase in the Mach number Ma ∞ leads to a higher curvature of the detached shock. Hinman et al [37] performed numerical simulations at an even higher Mach number Ma ∞ = 10 and Re D = 5.5 × 10 4 , where the flow structure is somehow similar compared to Figure 21. However, there are noticeable differences in the flow structure, namely the lid separation shock, which connects the recirculation region with the oblique shock and there is more curvature in the detached shock due to the high Mach number.…”

Section: Kármán Vortex Streetmentioning

confidence: 84%

Compressible and Viscous Effects in Transonic Planar Flow around a Circular Cylinder—A Numerical Analysis Based on a Commercially Available CFD Tool

Hoffmann

Weiss

2023

Fluids

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Transonic planar flows around a circular cylinder are investigated numerically for laminar and turbulent flow conditions with Reynolds numbers of 50≤ReD≤300 and 8890≤ReD≤ 80,000 and free stream Mach numbers in the range of 0.2≤Ma∞≤2. A commercially available CFD tool is used and validated for this purpose. The results show that the flow phenomena occurring can be grouped into eight regimes. Compared to the incompressible flow regimes, several new phenomena can be found. In contrast, at higher Ma∞ of 0.6≤Ma∞≤0.8 vortices in the wake of the cylinder are suppressed for ReD=50. In some cases, Ma∞=0.8 and ReD≥300, λ-shocks are formed in the near cylinder wake. For supersonic Ma∞, two different phenomena are observed. Beside the well-known oblique and detached shocks, for 50≤ReD≤300 a wake with instabilities is formed downstream of the cylinder. Furthermore, the temporal mean drag coefficient C¯D, the Strouhal number Str, as well as the critical Mach number Macrit are calculated from the simulation results and are interpreted.

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Section: Kármán Vortex Streetmentioning

confidence: 84%

Compressible and Viscous Effects in Transonic Planar Flow around a Circular Cylinder—A Numerical Analysis Based on a Commercially Available CFD Tool

Hoffmann

Weiss

2023

Fluids

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“…A fully coupled fluid-solid approach for upward flame spread has been developed within Sutherland's law [18,65], and α is obtained by / ( ) Cp α λ ρ = , where λ is the thermal conductivity obtained by the modified eucken correction [65], and the specific heat at constant pressure Cp is calculated by [18,65]. D is given as D =α .…”

Section: Discussionmentioning

confidence: 99%

Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid–solid approach

Fukumoto

Wang

Wen

2018

Combustion and Flame

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2018) Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid-solid approach. Combustion and Flame, 190 . pp. 365-387. Permanent WRAP URL: Abstract A fully coupled fluid-solid approach has been developed within FireFOAM 2.2.x, a Large Eddy Simulation (LES) based fire simulation solver within the OpenFOAM® toolbox. Due consideration 1 Corresponding author email: Jennifer.Wen@warwick.ac.uk phenomena such as investigating the effects of width, inclination angles and side walls on flame spread as well as the predictions of flame spread in practical applications. Keywords Upward flame spread, Fully coupled fluid-solid approach, Large eddy simulation, PMMA 1. The time averaged reaction rate for the mass fraction equation chemical species J J ω is expressed as ( ) J J J u J fu f ( ) ( ) J J J

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Aft-Body Effects on Lip Shock-Wave Laminar Free-Interaction

Hinman

Johansen

2019

31st International Symposium on Shock Waves 1

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Interaction theory of hypersonic laminar near-wake flow behind an adiabatic circular cylinder

Cited by 19 publications

References 40 publications

Compressible and Viscous Effects in Transonic Planar Flow around a Circular Cylinder—A Numerical Analysis Based on a Commercially Available CFD Tool

Compressible and Viscous Effects in Transonic Planar Flow around a Circular Cylinder—A Numerical Analysis Based on a Commercially Available CFD Tool

Large eddy simulation of upward flame spread on PMMA walls with a fully coupled fluid–solid approach

Aft-Body Effects on Lip Shock-Wave Laminar Free-Interaction

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