On the isobaric specific heat capacity of natural gas

Jarrahian, Azad; Karami, Hojat; Heidaryan, Ehsan

doi:10.1016/j.fluid.2014.10.021

Cited by 15 publications

(2 citation statements)

References 24 publications

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“…The density-based approach is employed to solve the wet steam flow in steam turbines, and the second-order upwind discretization is used for the flow, turbulence and droplet number and liquid fraction equations. The thermophysical properties like the density [43], viscosity [44], specific heat capacity [45] and thermal conductivity [46] are used for the steam. The k-ω SST turbulence modelling [47,48] is utilized for solving the steam turbine based on its accuracy for the condensing process [49] in transonic flows [50].…”

Section: Numerical Implementationmentioning

confidence: 99%

Wet steam flow and condensation loss in turbine blade cascades

Wen

Yang

Ding

et al. 2021

Applied Thermal Engineering

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Section: Numerical Implementationmentioning

confidence: 99%

Wet steam flow and condensation loss in turbine blade cascades

Wen

Yang

Ding

et al. 2021

Applied Thermal Engineering

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“…The shear stress transport (SST) k-ω turbulence model [34,35] is adopted considering the supersonic flow [36] and nonequilibrium condensations [37]. The thermophysical properties like the density [38], viscosity [39], specific heat capacity [40] and thermal conductivity [41] are used from the Fluent library, while the saturation pressure, saturation temperature, surface tension, and density of water liquid are developed by the UDF during the numerical simulation.…”

Section: Model Implementationmentioning

confidence: 99%

Optimisation study of a supersonic separator considering nonequilibrium condensation behaviour

Wen

Ding

Yang

2020

Energy Conversion and Management

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The supersonic separation offers an opportunity for natural gas processing.The problem is that the phase change of water vapour in the supersonic flow is not fully understood in the presence of shock waves in a supersonic separator. This study aims to evaluate the performance of the supersonic separation with the phase change process and shock waves. The condensing flow model is developed to accurately predict the energy conversion within the supersonic separator. The computational results show that the single-phase flow model over-estimates the vapour expansions by 12.43% higher Mach number than the condensing flow model. The liquid fraction of 8.2% is predicted by the condensing flow model during the phase change process in supersonic separators.The supersonic separator is optimised via combining the diverging part of the supersonic nozzle and constant cyclonic separation tube as a long diverging part of the newly designed nozzle. The optimised supersonic separator reduces the energy loss by eliminating the oblique and expansion waves in the newly designed nozzle, which 2 improves the energy efficiency for natural gas processing.

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