Knowledge Base

Submit new resource for the knowledge base

Title*

Resource type

Suggest a new resource type*

Author(s)*

Editor(s)*

Publisher*

Conference Title*

Institution/Organisation*

Year*

Journal*

Volume

Number

Pages

URL (DOI if available)

Keyword(s)

Suggest new keyword(s)

Discipline(s)

Suggest new discipline(s)

Category(s)

Length scale(s)less than 1e-9 m1e-9 to 1e-6 m1e-6 m1e-6 to 1e-3 m1e-3 m1e-3 to 1 m1 to 10 m10 to 1000 mgreater than 1 km

Time scale(s)less than 1e-3 s1e-3 to 1 s1 to 60 s1 to 60 min1 to 24 hours1 to 30 days1 to 12 monthsgreater than 1 year

Non-expert summary

1500 characters remaining

Your Name*

Organisation / Institution*

Email:*

I Have Read and Agree to the ModCaD Privacy Policy

Found 3 Results

Article

Experimental investigation of laminar and turbulent displacement of residual oil film

Zhang, Y., Barrouillet, B. and Skadsem, H.J.

2023Scientific Reports1321120

Keywordscleaning, flow displacement, shear flow, thin film

DisciplinesChemical Engineering, Fluid Mechanics, Mechanical Engineering

CategoryLaboratory experiments

Scale1e-6 to 1e-3 m / 1 to 60 s

Non-expert summaryThis paper reports an experimental study of the removal of thin oil films from the wall of a cylindrical tube by a flow of water. The removal of the oil film is measured by monitoring dye concentration in the flushing liquid leaving the system: local extents of removal were not measured. The authors investigated the effect of the flow regime of the displacing fluid (water Reynolds numbers ranged from 1480 to 12690), the duration of the displacing fluid flow, and the estimated wall shear stress imposed on the film. When the volume of fluid is limited, the largest displacement efficiency was observed at Re = 7000-8000 (named the intermediate turbulent regime). The largest Reynolds number flows were most effective for achieving complete cleaning over a long time period.

[... Show more]

Article

Self-cleaning of a hydrophobic surface by a rolling water droplet

Hassan, G., Yilbas, B.S., Al-Sharafi, A., Al-Qahtani, H.

2019Scientific Reports95744

Keywordscleaning, drop, flow displacement, wetting

DisciplinesMechanical Engineering, Surface Chemistry

CategoriesLaboratory experiments, Theoretical modelling

Scale1e-6 to 1e-3 m, 1e-3 m, 1e-3 to 1 m / 1e-3 to 1 s, 1 to 60 s

Non-expert summaryThis is an experimental study of removal of dust particles from a hydrophobic surface by a rolling/sliding water droplet. The effect of surface inclination angle on droplet dynamics and dust removal is analyses and compared with a model. Droplet rolling dominates over sliding. Removal is mainly due to the droplet liquid coating the particles as it passes over the particle, and the removal efficiency is determined by the inclination of the surface.

[... Show more]

Review article

Liquid jet impingement

Lienhard, J.H.

1995Annual Review of Heat Transfer6199-270

Keywordscleaning, heat transfer, multiphase flow

DisciplinesFluid Mechanics, Mechanical Engineering

CategoryReview

Scale1e-6 to 1e-3 m, 1e-3 to 1 m / 1e-3 to 1 s, 1 to 60 s

Non-expert summaryThis is a review of heat transfer and flow phenomena during unsubmerged liquid jet impingement on solid surfaces, such as when a water jet passes through air and impinges on a wall. Both axisymmetric and planar jets are considered. The focus is on convective transport without phase change. Results for the stagnation zone are given first, followed by those for the regions downstream. Correlations are presented for flow and heat transfer phenomena. The heat fluxes that can be generated in these systems can be large, so there is a considerable body of work on topic. Splattering - the formation of breakaway droplets from the liquid film - that accompanies turbulent jet impingement is described. Other aspects of liquid jet impingement cooling are discussed briefly.

[... Show more]