Homogeneous mixture model simulation of compressible multi-phase flows at all Mach number

Yoo, Young-Lin; Kim, Jong-Chan; Sung, Hong-Gye

doi:10.1016/j.ijmultiphaseflow.2021.103745

Cited by 11 publications

(3 citation statements)

References 41 publications

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“…These details, which are hardly found by experiments or by a one-dimensional model, have an important relationship with the operation of a vacuum distillation unit. In industrial design, the structure and diameter of the transfer line are designed by an engineer’s experience.…”

Section: Resultsmentioning

confidence: 95%

“…It is worth mentioning that the maximum velocity can reach a critical velocity. The critical condition means a singular discontinuity where the finite pressure and/or velocity change corresponds to an infinitesimal change in space coordinate, 28 which should be avoided in practice because it may lead to a large pressure drop and other operation problems.…”

Section: Pressure Distribution For Case 1 Of Type Amentioning

confidence: 99%

See 1 more Smart Citation

Computational Fluid Dynamics Simulation of Internal Compressible Flow in Transfer Lines and Structural Optimization

Qin,

Cong,

Fang

et al. 2023

Ind. Eng. Chem. Res.

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The design of transfer lines is a key factor affecting the transmission performance of petroleum transportations in vacuum distillation units of the petrochemical industry. Therefore, this study established a simulation method to describe compressible fluids in transfer lines and validated this method using a planar nozzle model and industrial data. Subsequently, the simulation results of pressure, velocity, and Ma number distribution were analyzed and discussed for seven sets of industrial transfer lines. The results indicate that the structure of the transition section and connection section is the key factor affecting the performance of the transfer line, and the connection forms of horizontal direct insertion (Case 1) and gradual expansion (Case 4 and Case 5) help to reduce the pressure drop in the transition section and connection section. For this reason, based on Case 1, a detailed analysis was conducted on the internal flow field and pressure drop at the connection under different mass flow rates, and a universal optimization method was proposed to connect the transition section and low-speed section in the transfer line. The results show that the optimized structure can eliminate large eddies at the connection section and reduce the pressure drop by 36.8%. The modeling methodology and the results presented will be useful for evolving better designs of transfer lines accompanying compressible fluids.

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Section: Resultsmentioning

confidence: 95%

Section: Pressure Distribution For Case 1 Of Type Amentioning

confidence: 99%

Computational Fluid Dynamics Simulation of Internal Compressible Flow in Transfer Lines and Structural Optimization

Qin,

Cong,

Fang

et al. 2023

Ind. Eng. Chem. Res.

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show abstract

“…From this parent model, different variants have been raised with the introduction of some relaxation parameters to restrict non-equilibrium states. 126 A more efficient alternative model is the homogenous mixture (single fluid) model, 127,128 which assumes a mechanical equilibrium (no slip velocity) between the phases and model one set of conservation equations for all the phases.…”

Section: ) Experimental and Numerical Methods Of Micro-scale Cavitati...mentioning

confidence: 99%

Fundamentals, biomedical applications and future potential of micro-scale cavitation-a review

et al. 2022

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Godunov-type solutions for gas-liquid two-phase transient flows with gas release effects

Lu,

Zhou,

Che

et al. 2023

J Hydrodyn

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Homogeneous mixture model simulation of compressible multi-phase flows at all Mach number

Cited by 11 publications

References 41 publications

Computational Fluid Dynamics Simulation of Internal Compressible Flow in Transfer Lines and Structural Optimization

Computational Fluid Dynamics Simulation of Internal Compressible Flow in Transfer Lines and Structural Optimization

Fundamentals, biomedical applications and future potential of micro-scale cavitation-a review

Godunov-type solutions for gas-liquid two-phase transient flows with gas release effects

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