Effect of interfacial turbulence and accommodation coefficient on CFD predictions of pressurization and pressure control in cryogenic storage tank

Kassemi, Mohammad; Kartuzova, Olga; Hylton, Sonya

doi:10.1016/j.cryogenics.2015.10.018

Cited by 77 publications

(19 citation statements)

References 30 publications

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“…Therefore, low Reynolds numbers are expected in most of the tank volume. This model is also commonly used in the literature [12,14,15] due its relatively low computational cost and high stability. The shear stress in the near wall regions is solved through the "law of the wall", which follows a logarithmic function that depends on the "y + ", which is a dimensionless parameter that represents the distance to the wall.…”

Section: Mode Descriptionmentioning

confidence: 99%

CFD Analysis of a Buffer Tank Redesigned with a Thermosyphon Concentrator Tube

Gómez¹,

Chapela

Collazo

et al. 2019

Energies

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This study analyzes a buffer tank simulated in both continuous operation mode and heating mode using CFD techniques. The analysis is focused in the thermal behavior of the tank, especially in parameters such as heat exchanged, heating time, and temperature distributions into the tank, in order to propose a better design. The results of the different simulations show that the tank heats water extremely slowly and extremely evenly when producing domestic hot water (DHW), which negatively affects the thermal stratification that is critical for rapidly reaching the DHW temperature. Therefore, the main problem of the tank is an inefficient heat exchange and a poor distribution of temperature. In order to overcome these operational limitations, a new design is proposed by installing a tube inside the tank that encloses the heating coil and sends hot water directly to the tank top region such that high-temperature DHW is rapidly provided, and thermal stratification is improved. Several simulations are performed with different open and closed configurations for the outlets of the inner tube. The different results show that the heating times significantly improve, and the time needed to reach the 45 °C set point temperature is reduced from 44 to 15 min. In addition, the simulations in which the opening and closing of the water outlets are regulated, the outlet DHW temperature is kept within 45–60 °C, which prevents overheating to unsafe use temperatures. Furthermore, the results of the simulation in continuous operation mode show a clear improvement of thermal stratification and an increase in the heat transmitted to the inside of the tank.

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Section: Mode Descriptionmentioning

confidence: 99%

CFD Analysis of a Buffer Tank Redesigned with a Thermosyphon Concentrator Tube

Gómez¹,

Chapela

Collazo

et al. 2019

Energies

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“…Storage tank is one of the basic components for spacecraft, in which the behavior of liquid is mostly responsible for the safety, stability, fuel supply, and so on. Correspondingly, researchers pay close attentions to the shape of free surface (Kulev and Dreyer 2010;Park et al 2015;Zhou et al 2016;Zwicke et al 2017), the pressure control inside tank (Lopez et al 2008; Barsi and Kassemi 2013;Chen and Liang 2013;Kassemi and Kartuzova 2016), the liquid sloshing (Zhou and Huang 2015;Deng and Yue 2017), and the measurement of the residual liquid. Among these aspects, the dynamic evolution of the free surface of the liquid inside tank is the key topic, which is principally determined by the surface tension force in microgravity environment.…”

Section: Introductionmentioning

confidence: 99%

“…The perspectives of researchers transferred from the properties of fluids, such as SF 0.65, SF 1.00, FC-77 (Stange et al 2003), LH 2 (Kumar et al 2007), to the outer geometry structure (with empty internal structure) of the tank (Lopez et al 2007). However, the mainly point is still on the latter, especially the capsule tank was mostly used (Kassemi and Kartuzova 2016).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behaviors of Liquid in Partially Filled Tank in Short-term Microgravity

Lin

Zhao

et al. 2018

Microgravity Sci. Technol.

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The oscillation of liquid/gas free surface in a partially filled storage tank caused by an abrupt drop of gravity level is of critical importance for the fluids management in space. In present study we investigate the dynamic behavior of free surface in tank models (tubes) using water as the working medium utilizing the Drop Tower Beijing, which can provide a 3.6s short-term microgravity condition. Meanwhile, the corresponding numerical simulation using volume of fluids (VOF) methods was carried out. It is shown that the dynamic behavior of free surface, which belongs to the typical phenomenon of capillary flow, is affected by the properties of working medium and the geometry and surface properties of the storage tank (especially the contact angle) jointly. The numerical simulation could capture the major characteristic oscillation frequency of free surface revealed by experiment. The oscillation frequency of free surface increases with the increasing air fraction and remains nearly constant at large air fraction. For the same air fraction, the oscillation frequency significantly increases with the decreasing tank diameter. Keywords Storage tank • Dynamic behavior • Oscillation frequency • Microgravity Ji-Cheng LI performed the numerical simulation and experimental data processing. Hai LIN carried out the experiment.

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“…With different liquid filling levels, heat fluxes, tank pressure control limits, and pressurization gases experimentally researched, TVS was validated to have well tank pressure control ability and be a feasible pressure control technique. During 2014 to 2016, Kassemi and Kartuzova established a numerical calculation model to investigate the pressurization and depressurization process of cryogenic storage tank based on the previous experiment results. Different from Kassemi and Kartuzova, Majumdar et al adopted the Generalized Fluid System Simulation Program to research the self‐pressurization and tank pressure control with TVS.…”

Section: Introductionmentioning

confidence: 99%

“…During 2014 to 2016, Kassemi and Kartuzova established a numerical calculation model to investigate the pressurization and depressurization process of cryogenic storage tank based on the previous experiment results. Different from Kassemi and Kartuzova, Majumdar et al adopted the Generalized Fluid System Simulation Program to research the self‐pressurization and tank pressure control with TVS. Almost in the same period, the France investigator Mer et al designed and established a room temperature TVS experimental apparatus with the simulant fluid NOVEC 1230 to assess the performance of TVS.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on thermodynamic vent system with different influence factors

Zhang

et al. 2017

Int J Energy Res

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Summary A ground experiment is established to investigate the pressure control performance of thermodynamic vent system (TVS) with HCFC123. Different influence factors, including tank pressure control bands, circulation volume flow rates, and heat loads, are investigated separately. The variations of tank pressure and fluid temperature are analyzed in different operation process. To compare the performance of TVS with that of direct venting, the tank heat leakage is solved with a quasi‐steady heat transfer model. With the actual penetration heat into tank determined, the performance comparison is made between direct venting and TVS. The results show that the increase rate of tank pressure rises with the heat load during the pressurization process. While the bulk fluid is still subcooled, great tank pressure control and fluid cooling could be obtained by increasing the circulation flow rate in the mixing injection process. With the cold capacity generated by the throttling process, both the vapor and liquid should be well cooled. For the case of No.3 to 4, as the refrigeration capacity of TVS could not eliminate the accumulated heat load timely, the fluid has a temperature increase in the early stage of throttling process. While for the case of No.6, with the fluid being cooled sufficiently, both the vapor and liquid have received great temperature control. Compared with the direct venting, the recovery ratio of venting gas loss generated by TVS ranges from 30% to 145%, which shows the TVS has a large advantage on exhaust saving.

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Effect of interfacial turbulence and accommodation coefficient on CFD predictions of pressurization and pressure control in cryogenic storage tank

Cited by 77 publications

References 30 publications

CFD Analysis of a Buffer Tank Redesigned with a Thermosyphon Concentrator Tube

CFD Analysis of a Buffer Tank Redesigned with a Thermosyphon Concentrator Tube

Dynamic Behaviors of Liquid in Partially Filled Tank in Short-term Microgravity

Experimental study on thermodynamic vent system with different influence factors

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