The completion of the mathematical model by parameter identification for simulating a turbofan engine [PDF]
INCAS Bulletin, 2015 The purpose of this paper is to set up a method to determine the missing engine design parameters (turbine inlet temperature T3T, airflow rate) which significantly influence the jet engines thrust.
Irina Carmen ANDREI +3 more
doaj +1 more source
Computations of the Shock Waves at Hypersonic Velocities Taken into Account the Chemical Reactions that Appear in the Air at High Temperatures [PDF]
INCAS Bulletin, 2015 The temperature in the nose region of a hypersonic vehicle can be extremely high, for example, reaching approximately 11 000 K at a Mach number of 36 (Apollo reentry).
Mihai Leonida NICULESCU +3 more
doaj +1 more source
Efficient Power System Transient Simulation Based on Frequency Response Optimized Integrators Considering Second Order Derivative [PDF]
arXiv, 2020 Frequency response optimized integrators considering second order derivative are proposed in this paper. Based on the proposed numerical integrators, and others which also consider second order derivative, this paper puts forward a novel power system transient simulation scheme.
arxiv
Two-scale numerical simulation of the weakly compressible 1D isentropic Euler equations [PDF]
Numerische Mathematik / Numerical Mathematics 108, 2 (2007)
263-293, 2007 Motivated by the difficulty to solve numerically the weakly compressible 1D isentropic Euler equations with classical methods, we develop in this paper a two scale numerical method on this model. This method is based on two scale convergence theory developped by N'Guetseng and Allaire, and finite volume scheme.
arxiv +1 more source
Analysis and optimal control of a Huanglongbing mathematical model with resistant vector
Infectious Disease Modelling, 2021 Huanglongbing (HLB) is an incurable disease that affects citrus trees. To better understand the transmission of HLB, the mathematical model is developed to investigate the transmission dynamics of the disease between Asian citrus psyllid (ACP) and citrus
Youquan Luo +3 more
doaj
Shear mixing in stellar radiative zones - II. Robustness of numerical simulations [PDF]
A&A 592, A59 (2016), 2015 Recent numerical simulations suggest that the model by Zahn (1992, A&A, 265, 115) for the turbulent mixing of chemical elements due to differential rotation in stellar radiative zones is valid. We investigate the robustness of this result with respect to the numerical configuration and Reynolds number of the flow.
arxiv +1 more source
Is $$d^*(2380)$$ d ∗ ( 2380 ) a compact hexaquark state?
European Physical Journal C: Particles and Fields, 2023 The most fascinating dibaryon in the non-strange quark sector is $$d^*(2380)$$ d ∗ ( 2380 ) , which was reported by WASA-at-COSY Collaboration and confirmed by A2@MAMI Collaboration. The reported mass and decay width are $$M\approx 2.37$$ M ≈ 2.37 GeV, $$
Manying Pan, Xinmei Zhu, Jialun Ping
doaj +1 more source
Multi-resolution dynamic mode decomposition for damage detection in wind turbine gearboxes
Data-Centric Engineering, 2023 We introduce an approach for damage detection in gearboxes based on the analysis of sensor data with the multi-resolution dynamic mode decomposition (mrDMD).
Paolo Climaco +2 more
doaj +1 more source
Large eddy simulation requirements for the Richtmyer-Meshkov Instability [PDF]
, 2014 The shock induced mixing of two gases separated by a perturbed interface is investigated through Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS). In a simulation, physical dissipation of the velocity field and species mass fraction often compete with numerical dissipation arising from the errors of the numerical method.
arxiv +1 more source
Symplectic Model Order Reduction with Non-Orthonormal Bases
Mathematical and Computational Applications, 2019 Parametric high-fidelity simulations are of interest for a wide range of applications. However, the restriction of computational resources renders such models to be inapplicable in a real-time context or in multi-query scenarios.
Patrick Buchfink +2 more
doaj +1 more source