Search Results - "Vevek, U. S"

An efficient algorithm for computing smoothness indicators for WENO schemes by Vevek, U S

“…WENO schemes are a popular class of shock-capturing schemes which adopt an adaptive-stencil approach to interpolation. WENO schemes rely on smoothness…”
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Adaptive mapping for high order WENO methods by U S, Vevek, Zang, B., New, T.H.

“…In this paper, a novel mapping approach through the use of adaptive mapping functions is introduced for high order weighted essentially non-oscillatory (WENO)…”
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A domain decomposition technique for small amplitude wave interactions with shock waves by U S Vevek, Elhadidi, B., Chan, W.L.

“…•Linearized/nonlinear Euler equations are coupled by a domain decomposition method.•Method captures wave propagation and interactions with shock and heated…”
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Some Insights into the Screech Tone of Under-Expanded Supersonic Jets Using Dynamic Mode Decomposition by Zang, B, Vevek, U. S, New, T. H

“…AbstractJet screech is an intense pure tone which has attracted decades of research interest due to its possible detrimental effect on engineering structures…”
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A New Mapped WENO Method for Hyperbolic Problems by Vevek, U S, Zang, Bin, New, T. H.

“…In this study, a new family of rational mapping functions gRM(ω;k,m,s) is introduced for seventh-order WENO schemes. gRM is a more general family of mapping…”
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On the application of non-standard rainbow schlieren technique upon supersonic jets by Mariani, R., Lim, H. D., Zang, B., Vevek, U S, New, T. H., Cui, Y. D.

“…A quantitative rainbow schlieren study was conducted on an over-expanded jet at nozzle pressure ratio of 2.8, based on two different schlieren set-ups: the…”
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Corrigendum to “Adaptive mapping for high order WENO methods” [J. Comput. Phys. 381 (2019) 162–188] by U S Vevek, Zang, B., New, T.H.

“…•Corrected proof for the monotonicity of the gRM(ω;k,m,s) family of mapping functions.•Numerical validation of the choice of the adaptive parameter…”
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On Alternative Setups of the Double Mach Reflection Problem by Vevek, U. S., Zang, B., New, T. H.

“…The double Mach reflection (DMR) problem is an important test case for the assessment of the resolution of Euler codes. The initial and boundary conditions…”
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An Efficient Hybrid Method for Solving Euler Equations by Vevek, U. S., Zang, B., New, T. H.

“…In this paper, a hybrid method suitable for solving the Euler equations using high order methods has been proposed. The method was implemented and validated…”
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A carbuncle cure for the Harten-Lax-van Leer contact (HLLC) scheme using a novel velocity-based sensor by Vevek, U. S., Zang, B., New, T. H.

“…A hybrid numerical flux scheme is proposed by adapting the carbuncle-free modified Harten-Lax-van Leer contact (HLLCM) scheme to smoothly revert to the…”
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An assessment of OpenFOAM solver on RANS simulations of round supersonic free jets by Zang, B., US, Vevek, Lim, H.D., Wei, X., New, T.H.

“…•An account on the supersonic flow modeling and its implementations in OpenFOAM is discussed.•Fully 3D simulations are carried out on supersonic jets with…”
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Short-time proper orthogonal decomposition of time-resolved schlieren images for transient jet screech characterization by Lim, H.D., Wei, X.F., Zang, B., U S Vevek, Mariani, R., New, T.H., Cui, Y.D.

“…Short-time Proper Orthogonal Decomposition (POD) is proposed as an image-based technique to study the transient jet screech characteristics of moderately…”
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A comparative study on the use of calibrated and rainbow schlieren techniques in axisymmetric supersonic jets by Mariani, R., Zang, B., Lim, H.D., Vevek, U.S., New, T.H., Cui, Y.D.

“…Detailed experimental comparisons had been conducted between calibrated and rainbow schlieren on perfectly- and under-expanded axisymmetric supersonic jets…”
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