Results 41 to 50 of about 25,769,904 (341)
Flow control of a plunging cylinder based on resolvent analysis
Journal of Fluid Mechanics, 2023 We design an open-loop active flow control for separated flows around a plunging circular cylinder based on resolvent analysis. The cylinder is plunging at a Strouhal number of 0.36 and a Reynolds number of 500.
Ching-Te Lin, Min-Lin Tsai, H. Tsai
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Resolvent Analysis of an Under-expanded Planar Supersonic Impinging Jet [PDF]
AIAA AVIATION 2022 Forum, 2022 This investigation aims to assess the effect of different types of actuator forcing on the feedback loop of an under-expanded Mach 1.27 planar impinging jet using a resolvent framework.
Qiong Liu, Chitrarth Prasad, D. Gaitonde
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Wavelet-based resolvent analysis of non-stationary flows [PDF]
Journal of Fluid MechanicsThis work introduces a formulation of resolvent analysis that uses wavelet transforms rather than Fourier transforms in time. Under this formulation, resolvent analysis may extend to turbulent flows with non-stationary mean states.
E. Ballouz +3 more
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Journal of Fluid Mechanics, 2023 The potential of frequency-tuned surfaces as a passive control strategy for reducing drag in wall-bounded turbulent flows is investigated using resolvent analysis. These surfaces are considered to have geometries with impedances that permit transpiration
A. Jafari, B. McKeon, M. Arjomandi
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Acoustic response of turbulent cavity flow using resolvent analysis [PDF]
The Physics of Fluids, 2021 Fluid-acoustic interactions are important in a variety of applications, and typically result in adverse effects. We analyze the influence of Mach number on such interactions and their input-output characteristics by combining resolvent analysis with Doak’
Qiong Liu, D. Gaitonde
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Bounded, asymptotically stable, and L^{1} solutions of Caputo fractional differential equations [PDF]
Opuscula Mathematica, 2015 The existence of bounded solutions, asymptotically stable solutions, and \(L^1\) solutions of a Caputo fractional differential equation has been studied in this paper.
Muhammad N. Islam
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Identification of cross-frequency interactions in compressible cavity flow using harmonic resolvent analysis [PDF]
Journal of Fluid MechanicsThe resolvent analysis reveals the worst-case disturbances and the most amplified response in a fluid flow that can develop around a stationary base state. The recent work by Padovan et al. (J. Fluid Mech., vol.
Md Rashidul Islam, Yiyang Sun
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Cubo, 2023 In this work, we investigate the existence of a mild solution and the approximate controllability of non-instantaneous impulsive stochastic integrodifferential equations driven by the Rosenblatt process in Hilbert space with the Hurst parameter \(\mathsf{
Essozimna Kpizim +4 more
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Sparse space–time resolvent analysis for statistically stationary and time-varying flows [PDF]
Journal of Fluid MechanicsResolvent analysis provides a framework to predict coherent spatio-temporal structures of the largest linear energy amplification, through a singular value decomposition (SVD) of the resolvent operator, obtained by linearising the Navier–Stokes equations
Barbara Lopez-Doriga +3 more
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Axioms, 2021 In this paper, we investigate the existence of mild solutions to a multi-term fractional integro-differential equation with random effects. Our results are mainly relied upon stochastic analysis, Mönch’s fixed point theorem combined with a random fixed ...
Amadou Diop, Wei-Shih Du
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