Visualization of liquid distribution and dry-out in a single-channel heat pipes with different wettability

Cecere, Anselmo; Cristofaro, Davide De; Savino, Raffaele; Boveri, Giulio; Raimondo, M.; Veronesi, Federico; Oukara, F.

doi:10.1016/j.expthermflusci.2018.03.012

Cited by 11 publications

(1 citation statement)

References 32 publications

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“…Pipeline visualization technology (PVT) realizes the visual monitoring of the pipeline interior, grasps the flow status of the fluid in the pipeline in real time, locates the location of the pipeline accident in time, reduces the economic loss caused by delayed processing, and improves the stability and safety of the transmission to a certain extent. [22][23][24] Pipeline visualization technology possesses a wide range of applications in pipeline materials, 25 fluid flow characteristics [26][27][28][29][30] pipeline sensitivity assessment, 31,32 risk assessment, 33 welding flaw exploration, [34][35][36] and subsurface corrosion detection. 37,38 The cemented tailing sand filling slurry CTBS is fouling in nature and the particle distribution state is not as clearly discernible as in aqueous solutions.…”

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Flow visualization simulation of cemented tailings backfill slurry by particle tracking technology

Sun

Gan

Zhi

et al. 2022

Engineering Reports

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Pipeline flow visualization of cemented tailings backfill slurry (CTBS) improves the safety and stability of transportation. High turbidity and low resolution make it difficult for conventional methods to monitor the particle distribution state of CTBS in a short period of time. Particle tracking technology (PTT) is used to simulate and investigate the flow characteristics of CTBS pipeline, combine with theoretical analysis to construct a CTBS pipeline visualization model, elaborate the particle distribution state when CTBS flows in the pipeline, and explore the effects of pipe diameter (PD), flow velocity (FV) and tailings gradation (TG) on the particle distribution. The results show that particle tracking technology is better applied to investigate the particle transport distribution characteristics of CTBS tailings. Three concepts of particle accumulated gravity Ga, static friction angle θ and diameter dividing line are defined, and the transport pipe is divided into light wear zone, medium wear zone and heavy wear zone. The increase in pipe diameter increases the content of fine particles at the pipe wall and the thickness of the lubrication layer becomes larger, which improves the safety and stability of CTBS transport. The increased flow velocity reduces the settling phenomenon of large size particles and improves the transport efficiency, which increases the pipeline transport resistance. Under good tailings grading conditions, a wide range of tailings grading is more suitable as backfill material. The results of the study illustrate the flow characteristics of the backfill slurry in the pipeline from the particle perspective and provide a theoretical basis for pipeline transportation research.

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