Progress in physical modelling and numerical simulation of phase transitions in cryogenic pool boiling and cavitation

Petersen, K.J.; Rahbarimanesh, Saeed; Brinkerhoff, Joshua

doi:10.1016/j.apm.2022.11.028

Cited by 4 publications

(3 citation statements)

References 208 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rough surfaces with pits, crevices, and cracks are more likely to retain gas and induce bubble nucleation. The heating effect is also stronger than for flat regions, as shown in Figure 3 [23]. The superheating around the bubbles is not uniform because of the thermal boundary layer and micro-liquid layer, making the growth of bubbles in non-homogeneous boiling more complex than in homogeneous boiling.…”

Section: Heterogeneous Nucleationmentioning

confidence: 97%

“…The factor b is proposed to modify the interference of the interface curvature on the temperature gradient, usually between one and √ 3, and the recommended value b = π/2 is obtained by comparing with the experimental data. The energy equation in non-uniform boiling was corrected to Equation ( 22) to obtain the bubble radius in Equation (23).…”

Section: Thermal Boundary Layer Bubble Growth Modelingmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Pool-Boiling Processes Based on Bubble-Dynamics Parameters

Xiao,

Zhuang,

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Immersion cooling is widely used for thermal management of servers. The two-phase immersion cooling, which transfers heat by boiling, possesses efficient temperature control ability under intensive heat generation. In the process of temperature control through boiling, the generation and transportation of bubbles play a crucial role in calculating the heat-transfer capacity. Therefore, it holds immense significance to obtain a profound understanding of the mechanisms underlying bubble formation and detachment. Currently, numerous mechanistic explanations and empirical correlations have been proposed to elucidate the various parameters of bubbles during the boiling process. These findings were considered to be valuable references when selecting appropriate boiling media and designing efficient heating surfaces. To comprehensively present the progress of bubble formation and heat transfer in the boiling system, the forces exerted on the bubbles are highlighted in this article. A meticulous review of bubble-force analysis and correlation formulae pertaining to various relevant parameters (e.g., nucleation sites density, bubble growth rate, bubble growth period, and detachment frequency) was conducted. This review article was also expected to provide a novel foundation for further exploration of enhanced boiling heat transfer.

show abstract

Section: Heterogeneous Nucleationmentioning

confidence: 97%

Section: Thermal Boundary Layer Bubble Growth Modelingmentioning

confidence: 99%

A Review of Pool-Boiling Processes Based on Bubble-Dynamics Parameters

Xiao,

Zhuang,

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Cavitation numerical simulation is an important auxiliary for cavitation research [29]. In the early 1990s, with the development of computer technology, cavitation models were proposed to describe the cavitation phenomenon using computational fluid dynamics (CFD) methods [30].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Hydrodynamic Cavitation Pretreatment of Food Waste: Effect of Pressure Drop on the Cavitation Behavior

Zhou,

Zhong,

Zhu

2024

Processes

View full text Add to dashboard Cite

Hydrodynamic cavitation (HC) has a wide range of application scenarios. However, there are few studies on the HC treatment of food waste (FW). A Venturi device is designed and operated and plays a clear role in changing the characteristics of FW. The medium viscosity is often neglected when studying cavitation behavior by numerical simulations. We use the Herschel–Bulkley model to describe the viscosity curves of artificial FW samples obtained experimentally. RANS numerical simulation is carried out with a simplified 2D axisymmetric CFD-based model considering the non-Newtonian fluid properties. A numerical simulation study is carried out for FW (TS = 10.0 wt%) at pressure drop (ΔP = 0.05–0.4 MPa). The numerical simulation results show the variation of flow characteristics, viscosity, vapor volume, turbulent viscosity ratio, cavitation number, and pressure loss coefficient. With the increase in ΔP, the flow rate in the Venturi throat increases, and the average viscosity decreases. It reduces the inhibition effect of viscosity on cavitation. The position of incipient vacuoles at the moment of cavitation is constant and unrelated to the variation of ΔP. Under the effect of increasing ΔP, the average vapor volume fraction is increased, and the cavitation effect is enhanced; the cavitation number (σ) is decreased, and the cavitation potential is improved. A larger ΔP should be selected to increase the cavitation efficiency E of the device.

show abstract