Liquid Film Thickness Above a Bubble Rising Under an Inclined Plate

Addlesee, Angus; Cornwell, Keith

doi:10.1205/026387697524290

Cited by 32 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Examples include conductivity probes [15][16][17], ultrasound detectors [18], fibre-optic sensors [19], microwave techniques [20,21], laser interferometry [22,23], fluorescence [24], laser-induced fluorescence [25,26], optical measurement methods [27][28][29], rainbow refractometry [30] and infrared thermography [31]. The use of conductivity probes was not considered for this investigation because they require physical contact with the liquid film which would greatly affect flow characteristics due to the small flow channels and liquid film thicknesses encountered.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of liquid film in a microstructured falling film reactor using laser scanning confocal microscopy

Yeong

Gavriilidis

Zapf

et al. 2006

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Characterisation of liquid film in a microstructured falling film reactor using laser scanning confocal microscopy

Yeong

Gavriilidis

Zapf

et al. 2006

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

“…4 and 5, correspond to the regime of sliding bubble (diameters 6 mm and 3 mm) motion along an inclined vibrating plate without detachment, for J ≤ 1. This regime is characterized by the existence of a thin liquid film with a thickness 50-100 lm [5][6] between the plate and a translating bubble and by the straight trajectory of the bubble motion. The velocity minimum in Figs.…”

Section: Resultsmentioning

confidence: 99%

“…The acceleration and amplitude measurement was performed with a Bruel & Kjaer 4398 accelerometer (6). The measured signal analysis was performed by a FFT spectrum analyzer SR 760 (5).…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Regimes of Sliding Bubble Motion along an Inclined Vibrating Plate

Grinis

Fominykh

2006

Chem. Eng. Technol.

View full text Add to dashboard Cite

Experimental investigation of sliding bubble movement along an inclined plate vibrating in the vertical direction facilitated the determination of two regimes of bubble motion. The first regime is characterized by the existence of a thin liquid film between a plate and a translating bubble, and by the straight trajectory of the bubble motion. The second is characterized by periodical bubble detachment from a plate and by the zigzag trajectory of the bubble motion. The criteria of transition from the first regime to the second are obtained by applying the theory of transport of granular materials by inclining vibratory conveyors to the motion of a sliding bubble.

show abstract

“…Addlesee and Cornwell (1997), Addlesee and Kew (2002), and Li et al (2006) reported that in forced convection flow boiling, the micro-layer thickness might vary between 50 µm and 100 µm. Three different micro-layer thicknesses are studied in this work: 50 µm, 75 µm, and 100 µm.…”

Section: Micro-layer Thickness Influencementioning

confidence: 99%

On the Mechanism of Bubble Induced Forced Convective Heat Transfer Enhancement

Roy¹,

Venuvanalingam²,

Klausner³

et al. 2018

Frontiers in Heat and Mass Transfer

View full text Add to dashboard Cite

This article presents both an experimental and numerical study of both stationary and sliding bubbles in a horizontal duct with forced convection heat transfer. An experimental facility was fabricated using a fully transparent, electrically-heated test section in which the bubble dynamics and the thermal field on the heated wall can be acquired using high-speed cameras and Thermochromic Liquid Crystals (TLC). Experiments were conducted using the working fluid HFE 7000 for two different turbulent Reynolds numbers. The experimental temperature field in the span-wise direction is first compared to the numerically calculated temperature field of a bubble sliding near a wall and second to the temperature field calculated for a stationary bubble under the same flow and thermal conditions. In both cases the thermal field influence of the microlayer thickness, bubble shape, and the presence of multiple bubbles is investigated. An important outcome is that, unlike the sliding bubble case, the temperature field calculated in the stationary case is in agreement with the experimental results. The temperature field does not show any significant sensitivity to the micro-layer thickness or the bubble shape. It is concluded that the mechanism of heat transfer enhancement due to growing bubbles in forced convection is due to the flow perturbation induced by the bubble at the growth site or injection site rather than the thermal boundary layer disruption of the sliding bubbles. This is the reason flow boiling superposition correlations have success in predicting heat transfer without considering the bubble sliding process.

show abstract

Liquid Film Thickness Above a Bubble Rising Under an Inclined Plate

Cited by 32 publications

References 8 publications

Characterisation of liquid film in a microstructured falling film reactor using laser scanning confocal microscopy

Characterisation of liquid film in a microstructured falling film reactor using laser scanning confocal microscopy

Regimes of Sliding Bubble Motion along an Inclined Vibrating Plate

On the Mechanism of Bubble Induced Forced Convective Heat Transfer Enhancement

Contact Info

Product

Resources

About