Explanipedia

Investigation of the Flow Field Morphology of Film Cooling in Supersonic Flow Open

Umberto Sandri, Massimiliano Ferro, Alessio Picchi, Antonio Andreini, Bruno Facchini , et al. · 2025

Film cooling is widely implemented in highly thermally stressed gas turbine components. Its performance has been extensively investigated for several decades and many results are available in the literature. In conventional gas turbines, r…

Onset of separation unsteadiness in hypersonic shock boundary layer interaction on a cone-step Open

Jenquin, Chase, Cui, Eric L., Dwivedi, Anubhav, Sidharth, G. S., Jewell, Joseph S. · 2025

Shock-boundary layer interactions (SBLI) on hypersonic cone step flows exhibit a range of intrinsic unsteady behaviors, from shear-layer oscillations to large-scale pulsations. This work investigates the unsteadiness in a cone-step geometr…

Onset of separation unsteadiness in hypersonic shock boundary layer interaction on a cone-step Open

Jenquin, Chase, Cui, Eric L., Dwivedi, Anubhav, Sidharth, G. S., Jewell, Joseph S. · 2025

Shock-boundary layer interactions (SBLI) on hypersonic cone step flows exhibit a range of intrinsic unsteady behaviors, from shear-layer oscillations to large-scale pulsations. This work investigates the unsteadiness in a cone-step geometr…

ConeFlowSim: an educational Python tool for supersonic flow over sharp cones Open

Seyed Arsham Asgari · 2025

First public release with Taylor–Maccoll solver and comparison plots

ConeFlowSim: an educational Python tool for supersonic flow over sharp cones Open

Seyed Arsham Asgari · 2025

First public release with Taylor–Maccoll solver and comparison plots

Effect of cross-sectional anisotropy on shock train dynamics in supersonic internal flows Open

Singh Jagmohan, Raman, Venkat · 2025

This study investigates the effect of duct aspect ratio ($AR$), defined as the ratio of major to minor axis in an elliptical duct, on shock train dynamics for a freestream Mach number of 2.1. The aspect ratio $AR$ is varied from 1.0 to 3.0…

Effect of cross-sectional anisotropy on shock train dynamics in supersonic internal flows Open

Singh Jagmohan, Raman, Venkat · 2025

This study investigates the effect of duct aspect ratio ($AR$), defined as the ratio of major to minor axis in an elliptical duct, on shock train dynamics for a freestream Mach number of 2.1. The aspect ratio $AR$ is varied from 1.0 to 3.0…

Data publication: Investigation of Two-Phase Critical Flow Phenomena during a Large-Break LOCA in a German PWR with the System Code ATHLET Open

Diaz-Pescador, Eduard, Kosowski, Kai, Schäfer, Frank, Seidl, Marcus, Kliem Soren · 2025

This manuscript presents the study of a large-break loss-of-coolant accident (LB-LOCA) sequence with the thermal-hydraulic system code ATHLET applied to a four-loop German pressurized water reactor (PWR) model. The investigation focuses pr…

Impact of Inducer Tip Clearance on Cryopump Performance Open

Wuji Wangsun, Xiaomei Guo, Ping Li, ZuChao Zhu, Aminjon Gulakhmadov , et al. · 2025

To investigate the influence of different tip clearances on the hydraulic performance and cavitation characteristics of a cryogenic inducer, this study builds upon previous research by employing the SST k-ω turbulence model and modifying t…

Data publication: Investigation of Two-Phase Critical Flow Phenomena during a Large-Break LOCA in a German PWR with the System Code ATHLET Open

Diaz-Pescador, Eduard, Kosowski, Kai, Schäfer, Frank, Seidl, Marcus, Kliem Soren · 2025

This manuscript presents the study of a large-break loss-of-coolant accident (LB-LOCA) sequence with the thermal-hydraulic system code ATHLET applied to a four-loop German pressurized water reactor (PWR) model. The investigation focuses pr…

The Impact of Shock Wave Control on the Structural Design of Supersonic Aircraft Open

yanjie zhang · 2025

Aviation technology keeps developing, so supersonic aircraft have become a key research focus. This is because they have advantages in efficiency and speed. However, the shock waves from supersonic flight cause problems. They increase aero…

Guided-jet waves generated by an acoustic source in a jet at a Mach number of 0.95 Open

Christophe Bogey · 2025

The guided-jet waves (GJWs) that may be trapped into a jet are investigated by simulating the propagation of the waves generated by an acoustic source on the axis of a jet at a Mach number of 0.95. The flow is modelled as a cylindrical she…

Experimental Investigation on the Cavitation Fundamental Characteristics of a Venturi Tube Under Ambient-Pressure Conditions Open

Guichun Chen, Deyong Zou, Wei-Dong Zhou, Luopeng Li, Fangxiang Wang , et al. · 2025

The sensitivities of the cavitation inception conditions and the cavitation discharge coefficient, together with the path independence and uniqueness of inception, underpin reliable use of cavitating Venturi tube under ambient conditions. …

On the use of a low velocity oxygen-fueled (L-VOF) gun to simulate sustained hypersonic flight conditions Open

Antonio Esposito, Marcello Lappa · 2025

This research deals with an innovative Blowdown-Induction System powered by a Low Velocity Oxygen-Fueled (L-VOF) gun; the system has been designed and built to mimic various flow scenarios related to sustained hypersonic flight. The fundam…

Assessment of Gradient-based Reconstruction and Artificial Diffusivity Methods in Simulating High-Speed Compressible Flows Open

Kumar R R, Saini, S., Vadlamani, N. R., Chamarthi, A. S. · 2025

The two promising methods for capturing high-speed flows are local artificial diffusivity (LAD) and centralised gradient-based reconstruction (C-GBR), the former being computationally economical and the latter being more robust and stable …

Assessment of Gradient-based Reconstruction and Artificial Diffusivity Methods in Simulating High-Speed Compressible Flows Open

Kumar R R, Saini, S., Vadlamani, N. R., Chamarthi, A. S. · 2025

The two promising methods for capturing high-speed flows are local artificial diffusivity (LAD) and centralised gradient-based reconstruction (C-GBR), the former being computationally economical and the latter being more robust and stable …

Numerical study on mixing and ignition enhancement characteristics in an air-intake strut supersonic combustor Open

Guowei Luan, JunLong zhang, Xiao-Si Li, Zilong Hu, Hongchao Qiu , et al. · 2025

Stability of Inverse Problems for Steady Supersonic Flows Past Lipschitz Perturbed Cones Open

Gui-Qiang G. Chen, Yun Pu, Yongqian Zhang, Gui-Qiang G. Chen, Yun Pu , et al. · 2025

We are concerned with inverse problems for supersonic potential flows past infinite axisymmetric Lipschitz cones. The supersonic flows under consideration are governed by the steady isentropic Euler equations for axisymmetric potential flo…

Mack modes in supersonic boundary layer Open

Nader Masmoudi, Yuxi Wang, Di Wu, Zhifei Zhang, Nader Masmoudi , et al. · 2025

Understanding the transition mechanism of boundary layer flows is of great significance in physics and engineering, especially due to the current development of supersonic and hypersonic aircraft. In this paper, we construct multiple unsta…

Singularity formation for the supersonic inward wave of compressible Euler equations with radial symmetry Open

Chen, Geng, El-Katri, Faris A., Hu Yanbo, Shen, Yannan · 2025

In this paper, we consider the singularity formation of smooth solutions for the compressible radially symmetric Euler equations. By applying the characteristic method and the invariant domain idea, we show that, for polytropic ideal gases…

Singularity formation for the supersonic inward wave of compressible Euler equations with radial symmetry Open

Chen, Geng, El-Katri, Faris A., Hu Yanbo, Shen, Yannan · 2025

In this paper, we consider the singularity formation of smooth solutions for the compressible radially symmetric Euler equations. By applying the characteristic method and the invariant domain idea, we show that, for polytropic ideal gases…

Application of hybrid-temporal LES to shock-induced boundary layer separation in hyperloop flows Open

Benedikt Geiben, Marc Havermann, Errol Hale, Cees Bil, Benedikt Geiben , et al. · 2025

The development of evacuated tube trains (ETT), generally referred to as Hyperloop, has gained significant attention in recent years, offering the potential for high-speed and energy-efficient transportation. Achieving sustainability in hi…

Effect of cavity-induced perturbation interactions on the transitional flow after the trailing edge Open

Islam Md. Rashidul, Sun Yiyang · 2025

We investigate the modal and non-modal linear amplification mechanisms in the flow over a subsonic open cavity and their subsequent interactions to identify optimal flow perturbations that propagate downstream the cavity and trigger flow t…

Effect of cavity-induced perturbation interactions on the transitional flow after the trailing edge Open

Islam Md. Rashidul, Sun Yiyang · 2025

We investigate the modal and non-modal linear amplification mechanisms in the flow over a subsonic open cavity and their subsequent interactions to identify optimal flow perturbations that propagate downstream the cavity and trigger flow t…

Computational Modeling of High-Speed Flows around Finned Missiles Open

Markos Cagan · 2025

In this study, flows around generic missiles were computationally modeled and analyzed using a coupled density-based solver, OpenFOAM-HiSA. The issues regarding the modeling procedures, e.g., turbulence modeling, were addressed, and analys…

Hybrid Simulations of Supersonic Shear Flows: I) Particle Acceleration Open

Liang Naixin, Caprioli, Damiano · 2025

Supersonic flows are ubiquitous in warm and cool media; their dissipation leads to heating, generation of nonthermal particles, and amplification of background magnetic fields. We present 2D hybrid (kinetic ions - fluid electrons) simulati…

Hybrid Simulations of Supersonic Shear Flows: I) Particle Acceleration Open

Liang Naixin, Caprioli, Damiano · 2025

Supersonic flows are ubiquitous in warm and cool media; their dissipation leads to heating, generation of nonthermal particles, and amplification of background magnetic fields. We present 2D hybrid (kinetic ions - fluid electrons) simulati…

Application of a supersonic impactor to moisture separation from a steam‑nitrogen gas mixture Open

Ali Sadeghi, Sung-Jin Kim, Byoung Jae Kim · 2025

Numerical Analysis of Supersonic Flow and Shockwave Behavior Over a Convex Wedge Open

Nobin Dhar, Mohammad Ilias Inam, Azizul Hakim Aakash, Nobin Dhar, Mohammad Ilias Inam , et al. · 2025

The present study describes the flow behavior around the leading edge of a convex wedge having a specific dimension under varying upstream Mach numbers ranging from 1.4 to 2. The interaction between the free stream flow and the wedge signi…

Outflow Boundary Conditions for Turbine-Integrated Rotating Detonation Combustors Open

Tsung-Ming Hsieh, K. Mark Bryden, Richard P. Dalton, John Crane, Tom I-P. Shih · 2025

This study examines outflow boundary conditions (BCs) in computational fluid dynamics (CFD) simulations of a transition duct with and without guide vanes that converts supersonic flow exiting a rotating detonation combustor (RDC) to subson…

Choked flow