Turbojet Module Sizing for Integration with Turbine-Based Combined Cycle EngineA turbine-based combined cycle (TBCC) vehicle is studied that relies on a scramjet engine for high-speed flight but requires a turbojet module to accelerate it to a high supersonic handover Mach…S. Rajashankar, N. Ananthkrishnan, A. Sharma et al.·Jun 27, 2024SaveLearn
Crude Oil Displacement Enhanced by Interfacially Active Nanoparticles and Their Coupling Effect with Low-Salinity BrinesFrom the microscopic scale to the petroleum-reservoir scale, the interfacial phenomena of the crude oil-water-rock system crucially control an immiscible flow in a porous reservoir. One of the key…Suparit Tangparitkul, Anupong Sukee, Jiatong Jiang et al.·Jun 27, 2024SaveLearn
Mitigation of fine hydrophobic liquid aerosols by polydispersed uncharged and charged water dropletsOne of the harmful contaminants in the atmosphere, which negatively affects the well-being of both humans and animals, is the suspended respirable particles. The most difficult aspect of the study is…Debabrat Biswal, Bahni Ray, Debabrata Dasgupta et al.·Jun 27, 2024SaveLearn
Stability of diffusion flames under shear flow: Taylor dispersion and the formation of flame streetsDiffusion flame streets, observed in non-premixed micro-combustion devices, align parallel to a shear flow. They are observed to occur in mixtures with high Lewis number (Le) fuels, provided that…Prabakaran Rajamanickam, Aiden Kelly, Joel Daou·Jun 27, 2024SaveLearn
On the two-reactant one-step activation-energy asymptotics for steady, adiabatic, planar flames with Lewis numbers of unityAspects of predictions of activation-energy asymptotics concerning the dependence of the burning velocity on the equivalence ratio are examined here through both asymptotic analyses and numerical…Prabakaran Rajamanickam·Jun 27, 2024SaveLearn
Effective Lewis number and burning speed for flames propagating in small-scale spatio-temporal periodic flowsPropagation of premixed flames having thick reaction zones in rapidly-varying, small-scale, zero-mean, spatio-temporal periodic flows is considered. Techniques of large activation energy asymptotics…Prabakaran Rajamanickam, Joel Daou·Jun 27, 2024SaveLearn
Diffusive-thermal instabilities of a planar premixed flame aligned with a shear flowThe stability of a thick planar premixed flame, propagating steadily in a direction transverse to that of unidirectional shear flow, is studied. A linear stability analysis is carried out in the…Joel Daou, Prabakaran Rajamanickam·Jun 27, 2024SaveLearn
Influences of stoichiometry on steadily propagating triple flames in counterflowsMost studies of triple flames in counterflowing streams of fuel and oxidizer have been focused on the symmetric problem in which the stoichiometric mixture fraction is 1/2. There then exist lean…Prabakaran Rajamanickam, Wilfried Coenen, Antonio L. Sánchez et al.·Jun 27, 2024SaveLearn
Enhancing interfacial thermal transport by nanostructures: Monte Carlo simulations with ab initio phonon propertiesRecent experiments have indicated that employing nanostructures can enhance interfacial heat transport, but the mechanism by which different structural morphologies and dimensions contribute to the…Wenzhu Luo, Neng Wang, Wenlei Lian et al.·Jun 27, 2024SaveLearn
Viscous Instabilities in Transversely Strained Channel FlowsWe investigate here linear stability in a canonical three-dimensional boundary layer generated by the superposition of a spanwise pressure gradient upon an otherwise standard channel flow. As the…Muhammad Abdullah·Jun 27, 2024SaveLearn
Magneto-Rayleigh-Taylor instability and feedthrough in a resistive liquid-metal liner of a finite thicknessThe effect of magnetic tension and diffusion on the perturbation growth of a liquid-metal liner subjected to the magneto-Rayleigh-Taylor (MRT) instability is investigated. An initially…Paria Makaremi-Esfarjani, Andrew J. Higgins·Jun 27, 2024SaveLearn
Numerical method for the magnetic vector potential in incompressible magnetohydrodynamic flows and the conservation properties of magnetic helicityAnalyzing magnetohydrodynamic (MHD) flows requires accurate predictions of the Lorentz force and energy conversion. Total energy, cross-helicity, and magnetic helicity can be used to investigate…Hideki Yanaoka·Jun 27, 2024SaveLearn
Resonance and Damping in Drop-Cantilever InteractionsIn this study, we investigated the dynamics of a droplet impacting and oscillating a polycarbonate cantilever beam of nine varying lengths. We analyzed the cantilever's damping and vibration…Crystal Fowler, Rehan Marshall, Maeji Son et al.·Jun 27, 2024SaveLearn
CFD analysis on the performance of a coaxial rotor with lift offset at high advance ratiosThe aerodynamic performance of an isolated coaxial rotor in forward flight is analyzed by a high-fidelity computational fluid dynamics (CFD) approach. The analysis focuses on the high-speed forward…Kaito Hayami, Hideaki Sugawara, Takumi Yumino et al.·Jun 27, 2024SaveLearn
Non-modal growth analysis of high-speed flows over an inclined coneSpatial optimal responses to both inlet disturbances and harmonic external forcing for hypersonic flows over a blunt cone at nonzero angles of attack are obtained by efficiently solving the…Xi Chen, Bingbing Wan, Guohua Tu et al.·Jun 27, 2024SaveLearn
Onset of spontaneous beating and whirling in the follower force model of an active filamentWe study the onset of spontaneous dynamics in the follower force model of an active filament, wherein a slender elastic filament in a viscous liquid is clamped normal to a wall at one end and…Ory Schnitzer·Jun 26, 2024SaveLearn
Bounded dissipation law and profiles of turbulent velocity moments in wall flowsTurbulent wall flows offer the most direct means for understanding the effects of boundaries and viscosity on turbulent fluctuations. Available data on mean-square fluctuations in these flows show…Xi Chen, Katepalli R. Sreenivasan·Jun 26, 2024SaveLearn
Bayesian inverse Navier-Stokes problems: joint flow field reconstruction and parameter learningWe formulate and solve a Bayesian inverse Navier-Stokes (N-S) problem that assimilates velocimetry data in order to jointly reconstruct a 3D flow field and learn the unknown N-S parameters, including…Alexandros Kontogiannis, Scott V. Elgersma, Andrew J. Sederman et al.·Jun 26, 2024SaveLearn
Efficient Lagrangian averaging with exponential filtersLagrangian averaging is a valuable tool for the analysis and modelling of multiscale processes in fluid dynamics. The numerical computation of Lagrangian (time) averages from simulation data is…Abhijeet Minz, Lois E. Baker, Hossein A. Kafiabad et al.·Jun 26, 2024SaveLearn
Rebuttal of Morris' criticism of the diffusive compressible Euler modelThis short note addresses the criticism of the diffusive compressible Euler model regarding heat diffusion, sound attenuation and material frame indifference put forward by M. Morris.Magnus Svärd·Jun 26, 2024SaveLearn
Near-limit H2-O2-N2 combustion in nonpremixed counterflow mixing layersNumerical computations employing detailed chemistry are used to characterize the different combustion modes emerging in mixing layers separating nitrogen-diluted counterflowing planar streams of…Jaime Carpio, Prabakaran Rajamanickam, Antonio L. Sánchez et al.·Jun 26, 2024SaveLearn
Thermal explosion characteristics of a gelled hypergolic dropletWhen a sphere of one reactant is placed in the medium of another reactant with which it is hypergolic, a chemical reaction (modeled here as a zeroth-order one-step irreversible Arrhenius reaction)…Prabakaran Rajamanickam·Jun 26, 2024SaveLearn
Exploring external rarefied gas flows through the method of fundamental solutionsThe well-known Navier--Stokes--Fourier equations of fluid dynamics are, in general, not adequate for describing rarefied gas flows. Moreover, while the Stokes equations -- a simplified version of the…Himanshi, Anirudh Singh Rana, Vinay Kumar Gupta·Jun 26, 2024SaveLearn
An Eulerian Meshless Method for Two-phase Flows with Embedded GeometriesWe present a novel Eulerian meshless method for two-phase flows with arbitrary embedded geometries. The spatial derivatives are computed using the meshless generalized finite difference method…Anand S Bharadwaj, Pratik Suchde, Prapanch Nair·Jun 26, 2024SaveLearn
Gauge Freedom and Objective Rates in the Morphodynamics of Fluid Deformable Surfaces: the Jaumann Rate vs. the Material DerivativeMorphodynamic descriptions of fluid deformable surfaces are relevant for a range of biological and soft matter phenomena, spanning materials that can be passive or active, as well as ordered or…Joseph Pollard, Sami Al-Izzi, Richard G. Morris·Jun 26, 2024SaveLearn