Preliminary design and simulation of an innovative Rotary Supersonic Nozzles Expander apparatus for natural gas liquefaction and general refrigeration processes

Alhodali, Mazen Abdul-Jabbar

doi:10.1016/j.applthermaleng.2022.119755

Cited by 3 publications

(3 citation statements)

References 19 publications

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“… Apart from the nozzle inlet, the steam flowing through the nozzle could be described by the ideal gas equation of state. This assumption allowed for simplified calculations and analysis of the steam flow behavior. Steam flow could be treated as an isentropic process, neglecting the influence of nonisentropic factors such as shock waves The steam flow was assumed to be one-dimensional and in a steady-state condition.…”

Section: New Design Methods Of a Supersonic Steam Injection Nozzlementioning

confidence: 99%

“… Steam flow could be treated as an isentropic process, neglecting the influence of nonisentropic factors such as shock waves. 41 The steam flow was assumed to be one-dimensional and in a steady-state condition. This assumption simplified the analysis by disregarding variations in flow parameters along different dimensions.…”

Section: New Design Methods Of a Supersonic Steam Injection Nozzlementioning

confidence: 99%

“…Steam flow could be treated as an isentropic process, neglecting the influence of nonisentropic factors such as shock waves. 41 …”

Section: New Design Methods Of a Supersonic Steam Injection Nozzlementioning

confidence: 99%

See 2 more Smart Citations

New Design Method of a Supersonic Steam Injection Nozzle and Its Numerical Simulation Verification

Wang,

Pang,

Tian

et al. 2023

ACS Omega

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Steam huff-n-puff in horizontal wells often had limitations, such as uneven steam injection and low reservoir utilization. To improve steam injection efficiency, a new method for designing a supersonic nozzle was proposed based on the principles of aerodynamics and thermodynamics. The nozzle featured a tapering section, a throat, and a diverging section. The best geometric shape of the tapering section was the Witoszynski curve. A set of nozzle size designs were established, and the size parameters were optimized. The results showed that the nozzle could inject steam into the formation at supersonic speed and it had the characteristics of constant flow rate and uniform development of the steam chamber. According to the steam Reynolds number and the good aggregation distribution characteristics of the size design model, three sequential nozzles of 3.0, 5.0, and 6.5 mm were formed based on the throat. When the throat diameter was 5.0 mm, the tapering length was 4.3 mm, the diverging length was 5.5 mm, the throat length was 3.0 mm, the inlet diameter was 9.8 mm, and the outlet diameter was 6.2 mm. Numerical simulations indicated that the pressure drop loss during steam huff-n-puff injection in horizontal wells was within 10%. It was of great significance to establish the nozzle size design model of the steam injection effect of horizontal wells.

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Section: New Design Methods Of a Supersonic Steam Injection Nozzlementioning

confidence: 99%

Section: New Design Methods Of a Supersonic Steam Injection Nozzlementioning

confidence: 99%

See 1 more Smart Citation

New Design Method of a Supersonic Steam Injection Nozzle and Its Numerical Simulation Verification

Wang,

Pang,

Tian

et al. 2023

ACS Omega

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Construction of vapor compression cycle with composite pressure-regulating components using GraPHsep method

Cui,

Ying,

Wang

et al. 2024

Energy Conversion and Management

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Effect of inlet water vapor mass fraction on flow characteristics in Laval nozzle

Wang,

Zhai,

Chen

et al. 2024

International Journal of Chemical Reactor Engineering

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The Laval nozzle is an important component of the supersonic cyclone to achieve the change of gas–liquid two-phase, and the condensation characteristics of the Laval nozzle have an important influence on the separation performance of the supersonic cyclone. In this work, the effect of inlet water vapor mass fraction on the condensation characteristics in the Laval nozzle was investigated using numerical simulation and experimental methods by establishing a three-dimensional numerical model of air-water vapor supersonic condensation flow. The flow field structures in the Laval nozzle under different inlet water vapor mass fractions were investigated, including Mach number, pressure, and temperature and the effects of the inlet water vapor mass fraction on the liquefaction characteristics in the Laval nozzle were investigated. In addition, the droplet distribution in the Laval nozzle were also tested by a particle image velocimetry (PIV) experimental system. The comparison of simulation and experimental results indicates that the numerical model established in this work can effectively describe the real flow situation in the Laval nozzle. The results show that the inlet water vapor mass fraction has a little effect on the flow field structure in the Laval nozzle, and has the significant impact on the water vapor condensation characteristics. With increasing the inlet steam mass fraction from 5 % to 12.5 %, the nucleation rate, droplet number, and separation efficiency in the Laval nozzle increase to 4.05 × 1021 kg−1 s−1, 3.67 × 1014 kg−1, and 79.4 %, respectively, and when further increasing the inlet steam mass fraction to 15 %, these parameters decrease.

show abstract

Preliminary design and simulation of an innovative Rotary Supersonic Nozzles Expander apparatus for natural gas liquefaction and general refrigeration processes

Cited by 3 publications

References 19 publications

New Design Method of a Supersonic Steam Injection Nozzle and Its Numerical Simulation Verification

New Design Method of a Supersonic Steam Injection Nozzle and Its Numerical Simulation Verification

Construction of vapor compression cycle with composite pressure-regulating components using GraPHsep method

Effect of inlet water vapor mass fraction on flow characteristics in Laval nozzle

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