Pressure wave propagation characteristics in a two-phase flow pipeline for liquid-propellant rocket

Li, Yanzhong; Cui, Li; Chen, Erfeng; Yuan-yuan, Ying

doi:10.1016/j.ast.2010.09.011

Cited by 49 publications

(5 citation statements)

References 13 publications

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“…Material Settings. Because there is not UDMH in the material database, the material parameter of UDMH [1] must be added into the database as Table1.…”

Section: Model and Settingsmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Analysis of Diffusion of Leaked UDMH on a Cliff

Chen

Wang

Zhang

2015

AMR

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Built-in VOF model and k-ε turbulence model in Fluent were used to simulate the evaporation and diffusion of the pool formed by leaked UDMH on a cliff. Different situations in three wind speeds were calculated, and the diffusion mode and concentration distribution law were analyzed. The results show that there is a large poisoned area formed on the cliff, and people under the cliff should escape to upwind immediately and the emergency personnel should access the accident spot along the back of the cliff.

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“…Material Settings. Because there is not UDMH in the material database, the material parameter of UDMH [1] must be added into the database as Table1.…”

Section: Model and Settingsmentioning

confidence: 99%

“…Unsymmetrical Dimethyl hydrazine (UDMH) is a type of common used liquid rocket propellant, but it is toxic, flammable and explosive, and it belongs to poison of second class [1]. Transportation of propellant often goes through mountain area.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Diffusion of Leaked UDMH on a Cliff

Chen

Wang

Zhang

2015

AMR

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“…Substituting (39) into (40), the total pressure drop gradient along the flow direction within the annulus can be expressed as…”

Section: The United Model Developedmentioning

confidence: 99%

“…The propagation of pressure wave during the condensation of R404A and R134a refrigerants in pipe minichannels that undergo periodic hydrodynamic disturbances was given by Kuczynski [37,38]. Li et al [39] simulated the condensation of gas oxygen in subcooled liquid oxygen and the corresponding mixing process in pump pipeline with the application of thermal phase change model in Computational Fluid Dynamics code CFX and investigated the pressure wave propagation characteristics in two-phase flow pipeline for liquid-propellant rocket based on a proposed pressure wave propagation model and the predicted flow parameters. Based on the unified theory of Kanagawa et al [40], the nonlinear wave equation for pressure wave propagation in liquids containing gas bubbles is rederived.…”

Section: Introductionmentioning

confidence: 99%

Calculation Analysis of Pressure Wave Velocity in Gas and Drilling Mud Two-Phase Fluid in Annulus during Drilling Operations

Lin

Kong

Qiu

et al. 2013

Mathematical Problems in Engineering

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Investigation of propagation characteristics of a pressure wave is of great significance to the solution of the transient pressure problem caused by unsteady operations during management pressure drilling operations. With consideration of the important factors such as virtual mass force, drag force, angular frequency, gas influx rate, pressure, temperature, and well depth, a united wave velocity model has been proposed based on pressure gradient equations in drilling operations, gas-liquid two-fluid model, the gas-drilling mud equations of state, and small perturbation theory. Solved by adopting the Runge-Kutta method, calculation results indicate that the wave velocity and void fraction have different values with respect to well depth. In the annulus, the drop of pressure causes an increase in void fraction along the flow direction. The void fraction increases first slightly and then sharply; correspondingly the wave velocity first gradually decreases and then slightly increases. In general, the wave velocity tends to increase with the increase in back pressure and the decrease of gas influx rate and angular frequency, significantly in low range. Taking the virtual mass force into account, the dispersion characteristic of the pressure wave weakens obviously, especially at the position close to the wellhead.

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“…The effects of aerated concentration, liquid pressure, perturbation frequency, and interfacial forces on the acoustic wave velocity and its attenuation in the aerated flow are also explored. With the application of thermal phase change model in computational fluid dynamics code CFX, Li et al [38] proposed a pressure wave propagation model and investigated the pressure wave propagation characteristics in two-phase fuel systems of liquid-propellant rocket. The propagation of pressure wave during the condensation of R404A and R134A refrigerants in pipe minichannels was given by Kuczyński [39].…”

Section: Introductionmentioning

confidence: 99%

A Novel Dynamic Model for Predicting Pressure Wave Velocity in Four-Phase Fluid Flowing along the Drilling Annulus

Kong

Lin

Qiu

et al. 2015

Mathematical Problems in Engineering

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A dynamic pressure wave velocity model is presented based on momentum equation, mass-balance equation, equation of state, and small perturbation theory. Simultaneously, the drift model was used to analyze the flow characteristics of oil, gas, water, and drilling fluid multiphase flow. In addition, the dynamic model considers the gas dissolution, virtual mass force, drag force, and relative motion of the interphase as well. Finite difference and Newton-Raphson iterative are introduced to the numerical simulation of the dynamic model. The calculation results indicate that the wave velocity is more sensitive to the increase of gas influx rate than the increase of oil/water influx rate. Wave velocity decreases significantly with the increase of gas influx. Influenced by the pressure drop of four-phase fluid flowing along the annulus, wave velocity tends to increase with respect to well depth, contrary to the gradual reduction of gas void fraction at different depths with the increase of backpressure (BP). Analysis also found that the growth of angular frequency will lead to an increase of wave velocity at low range. Comparison with the calculation results without considering virtual mass force demonstrates that the calculated wave velocity is relatively bigger by using the presented model.

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Pressure wave propagation characteristics in a two-phase flow pipeline for liquid-propellant rocket

Cited by 49 publications

References 13 publications

Numerical Analysis of Diffusion of Leaked UDMH on a Cliff

Numerical Analysis of Diffusion of Leaked UDMH on a Cliff

Calculation Analysis of Pressure Wave Velocity in Gas and Drilling Mud Two-Phase Fluid in Annulus during Drilling Operations

A Novel Dynamic Model for Predicting Pressure Wave Velocity in Four-Phase Fluid Flowing along the Drilling Annulus

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