Searched for: subject%3A%22supersonic%255C+flow%22
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Sofia-Gabrion, Grégoire (author)
A series of numerical simulations was executed using the high-performance cluster at TU Delft's Aerospace Faculty. The primary objective was to gain deeper insights into the intricate dynamics of a sonic transverse jet in a supersonic crossflow with an oblique induced shock wave, especially concerning mixing. These simulations delved into the...
master thesis 2023
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Wagenaar, Thomas (author)
While physics-informed neural networks have been shown to accurately solve a wide range of fluid dynamics problems, their effectivity on highly compressible flows is so far limited. In particular, they struggle with transonic and supersonic problems that involve discontinuities such as shocks. While there have been multiple efforts to alleviate...
master thesis 2023
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Pearse, Oliver (author)
During the start-up and shutdown sequence of rocket engines, immense forces are generated that are required to propel the payload into earth's orbit or outer space. The bulk of the generated forces are in the form of thrust. However, forces are also generated that act perpendicularly to the thrust direction. These side-loads are unwanted...
master thesis 2022
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Mathijssen, Lucas (author)
Supersonic panel flutter is a self-excited vibration, where energy is transferred into thin flexible panels, such as skin panels in supersonic vehicles, from the (supersonic) flow around them, which can lead to their rapid fatigue failure. Relevant examples of this include the failure of skin panels in the X-15 vehicle, or violent oscillations...
master thesis 2022
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Hu, W. (author), Hickel, S. (author), van Oudheusden, B.W. (author)
The flow over a forward-facing〉 step (FFS) at Ma<sub>∞</sub> = 1.7 and Re<sub>δ0</sub> = 1.3718 × 10<sup>4</sup> is investigated by well-resolved large-eddy simulation. To investigate effects of upstream flow structures and turbulence on the low-frequency dynamics of the shock wave/boundary layer interaction (SWBLI), two cases are considered:...
journal article 2022
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Modesti, D. (author), Sathyanarayana, Srikanth (author), Salvadore, Francesco (author), Bernardini, Matteo (author)
We perform direct numerical simulation of supersonic turbulent channel flow over cubical roughness elements, spanning bulk Mach numbers -, both in the transitional and fully rough regime. We propose a novel definition of roughness Reynolds number which is able to account for the viscosity variations at the roughness crest and should be used...
journal article 2022
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Cadambi Padmanaban, Uttam (author)
 Distributed surface roughness elements characterise Thermal Protection Systems (TPS) typical of supersonic and hypersonic flows. The presence of these distributed roughness elements cause an increase in drag and heat transfer.  As opposed to incompressible flow over roughness elements, there are very few experimental and numerical studies on...
master thesis 2021
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Head, A.J. (author)
The vast number of pioneering theoretical developments inthe area of non-classical gas dynamics together with the rising number ofapplications of organic Rankine cycle (ORC) technology have shaped a new branchof fluid mechanics called non-ideal compressible fluid dynamics (NICFD). Thisfield of fluid mechanics is concerned...
doctoral thesis 2021
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Baars, W.J. (author), Murray, Nathan E. (author), Tinney, Charles E. (author)
A quantitative assessment of the acoustic source field produced by a laboratory-scale heated jet with a gas dynamic Mach number of 1.55 and an acoustic Mach number of 2.41 is performed using arrays of microphones that are traversed across the axial and radial plane of the jet's acoustic field. The nozzle contour comprises a method of...
journal article 2021
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Sun, Z. (author)
The micro vortex generator (MVG) is used extensively in low speed aerodynamic problems and is now extended into the supersonic flow regime to solve undesired flow features that are associated with shock wave boundary layer interactions (SWBLI) such as flow separation and associated unsteadiness of the interaction system. Numerous experimental...
doctoral thesis 2014
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Sun, Z. (author), Schrijer, F.F.J. (author), Scarano, F. (author), Van Oudheusden, B.W. (author)
The three-dimensional instantaneous flow organization in the near wake of a micro-ramp interacting with a Mach 2.0 supersonic turbulent boundary layer is studied using tomographic particle image velocimetry. The mean flow reveals a wake with approximately circular cross section dominated by a pair of counter-rotating streamwise vortices...
journal article 2012
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Abbate, G. (author), Kleijn, C.R. (author), Thijsse, B.J. (author), Engeln, R. (author), Van de Sanden, M.C.M. (author), Schram, D.C. (author)
The gas dynamics of a stationary hot-gas jet supersonically expanding into a low pressure environment is studied through numerical simulations. A hybrid coupled continuum-molecular approach is used to model the flow field. Due to the low pressure and high thermodynamic gradients, continuum mechanics results are doubtful, while, because of its...
journal article 2008
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Schrijer, F.F.J. (author), Mignoli, G. (author), Scarano, F. (author), Walpot, L.M.G.F.M. (author)
conference paper 2008
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Schrijer, F.F.J. (author), Modenini, D. (author)
conference paper 2008
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Humble, R.A. (author), Scarano, F. (author), Van Oudheusden, B.W. (author)
The unsteady flow features of a series of two-dimensional, planar base flows are examined, within a range of low-supersonic Mach numbers in order to gain a better understanding of the effects of compressibility on the organized global dynamics. Particle image velocimetry is used as the primary diagnostic tool in order to characterize the...
journal article 2007
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Arnal, D. (author)
The global objective of the SUPERTRAC project is to explore the possibilities to delay laminar-turbulent transition on supersonic aircraft wings. The following techniques are investigated: micron-sized roughness elements, anti-contamination devices, suction and shape optimization. This paper provides an overview of the project and describes in...
conference paper 2006
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Nastase, A. (author)
The optimization strategy is an own, two times enlarged variational method, which is able to perform the global, optimal design (OD) and to include the friction effect in the computation of the total drag functional and in the OD. The first enlargement consists in the inviscid global OD of the flying configuration’s (FC’s) shape (namely, the...
conference paper 2006
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Houtman, E.M. (author), Bannink, W.J. (author), Timmerman, B.H. (author)
report 1995
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Hounjet, M.H.L. (author)
A description is given of the method CAR88 for the calculation of steady and time-linearized unsteady subsonic and supersonic flow about complex 2-D and 3-D configurations. The method belongs to the category of the socalled panel methods. Results of applications in supersonic flow are shown which have been made to a 2-D oscillating flat plate, a...
report 1988
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Elsenaar, A. (author)
As part of the joint International Vortex Flow Experiment, force and pressure measurements have been carried out on a 65 deg delta wing configuration in the transonic and supersonic wind tunnels of NLR. Out of these data three test cases were selected by the organizing committee of the GAMM WORKSHOP on the "Numerical Simulation of Compressible...
report 1986
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