Similarity Parameters for Non-ideal One-Dimensional Isentropic Expansions

Conti, Camilla Cecilia; Spinelli, Andrea; Guardone, Alberto

doi:10.1007/978-3-030-69306-0_4

Cited by 1 publication

(1 citation statement)

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“…Romei dependence of the flow quantities on total conditions and showed that for MM, if the fluid at the inlet is in a nonideal thermodynamic state, a larger area ratio A/A th is required to accommodate the larger variation of the volume flow rate. Conti et al (2021) showed how the critical pressure ratio P * /P t in sonic conditions strongly depends on the thermodynamic nonideality of the fluid states and the flow path is governed by the evolution of values and gradients of both the compressibility factor Z and the fundamental derivative of gas dynamics Γ . For HMC fluids, P * /P t increases with nonideality for 0.5 ≤ Z t ≤ 0.9.…”

Section: Inviscid Nozzle Flowmentioning

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: Inviscid Nozzle Flowmentioning

confidence: 99%