Shock interactions in two-dimensional steady flows of Bethe–Zel’dovich–Thompson fluids

Vimercati, Davide; Kluwick, A.; Guardone, Alberto

doi:10.1017/jfm.2019.1053

Cited by 4 publications

(1 citation statement)

References 44 publications

(67 reference statements)

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“…The nonclassical gas dynamics of mixtures was treated by Guardone et al (2014). Nonclassical oblique waves and wave interactions were discussed in detail by Vimercati et al (2018bVimercati et al ( , 2020. Nannan et al (2014) analyzed the possibility of observing nonideal and nonclassical gas dynamic effects in flows occurring with fluid states near Eckert number: T∞ , where u ∞ , c P∞ , T ∞ are the flow velocity, isobaric specific heat, and free-stream static temperature; for an ideal gas it reduces to (γ − 1)M 2 ∞ Chapman-Rubesin parameter:…”

Section: Nonclassical Gas Dynamicsmentioning

confidence: 99%

Nonideal Compressible Fluid Dynamics of Dense Vapors and Supercritical Fluids

Guardone,

Colonna,

Pini

et al. 2024

Annu. Rev. Fluid Mech.

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The gas dynamics of single-phase nonreacting fluids whose thermodynamic states are close to vapor-liquid saturation, close to the vapor-liquid critical point, or in supercritical conditions differs quantitatively and qualitatively from the textbook gas dynamics of dilute, ideal gases. Due to nonideal fluid thermodynamic properties, unconventional gas dynamic effects are possible, including nonclassical rarefaction shock waves and the nonmonotonic variation of the Mach number along steady isentropic expansions. This review provides a comprehensive theoretical framework of the fundamentals of nonideal compressible fluid dynamics (NICFD). The relation between nonideal gas dynamics and the complexity of the fluid molecules is clarified. The theoretical, numerical, and experimental tools currently employed to investigate NICFD flows and related applications are reviewed, followed by an overview of industrial processes involving NICFD, ranging from organic Rankine and supercritical CO2 cycle power systems to supercritical processes. The future challenges facing researchers in the field are briefly outlined.

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Section: Nonclassical Gas Dynamicsmentioning

confidence: 99%

Nonideal Compressible Fluid Dynamics of Dense Vapors and Supercritical Fluids

Guardone,

Colonna,

Pini

et al. 2024

Annu. Rev. Fluid Mech.

Self Cite

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Comparative numerical study of aerodynamic heating and performance of transonic hyperloop pods with different noses

Niu

Yang

et al. 2022

Case Studies in Thermal Engineering

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Dense-vapor effects in compressible internal flows

et al. 2021

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Paradigmatic compressible one-dimensional flows provide insights regarding the loss mechanisms of fluid machinery components typical of power and propulsion systems, like turbomachines and heat exchangers. Their performance also depends on the working fluid, thus, on both molecular complexity and thermodynamic state. Four typical flow configurations have been investigated, namely, Rayleigh and Fanno flows, mixing of two co-flowing streams, and flow injection into a mainstream. It was found that the Grüneisen parameter allows the quantitative characterization of the influence of molecular complexity on losses. Moreover, the influence of dense vapor effects has been evaluated and assessed in terms of other fluid parameters. The analysis allowed the quantification of how, in Rayleigh flows, the energy transferred as heat is converted into kinetic and internal energy of the fluid, and, in Fanno flows, entropy is generated due to friction. In Rayleigh flow, the fluid at the inlet of the channel must have more energy for the flow to choke, depending on the molecular complexity. Similarly, in Fanno flows and for a given value of the compressibility factor, molecular complexity determines the choking point in the channel, and the higher its value the further downstream is the location. Moreover, for both Fanno and Rayleigh flows, if the flow is subsonic and dense vapor effects are relevant, the Mach number varies non-monotonically along the channel. Finally, it was proven that the amount of entropy generated in mixing flows increases with both the fluid molecular complexity and with the thermodynamic non-ideality of the fluid states.

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Shock interactions in two-dimensional steady flows of Bethe–Zel’dovich–Thompson fluids

Cited by 4 publications

References 44 publications

Nonideal Compressible Fluid Dynamics of Dense Vapors and Supercritical Fluids

Nonideal Compressible Fluid Dynamics of Dense Vapors and Supercritical Fluids

Comparative numerical study of aerodynamic heating and performance of transonic hyperloop pods with different noses

Dense-vapor effects in compressible internal flows

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