void fraction
An analysis of steady state void fraction distribution and steam void response to sinusoidal power modulation in a boiling water coolant channel.
... and void fraction, has been used to predict void fractions at reactor operating ...volume fraction versus steam quality curve was found to exist at the bulk boiling ...
89
Modeling of void fraction and liquid temperature profile evolution in vertical subcooled nucleate boiling flow
... averaged void fraction radial profiles at different axial locations along the ...the void fraction peak and the widening of the layer near the wall, in which bubbles are ...the void ...
7
Void Fraction Measurement of Gas-Liquid Two-Phase Flow from Differential Pressure
... gas void fraction without the consideration of friction loss in the two-phase flow, which provides an alternative approach to validate the gas void fraction model based on differential ...The ...
10
A method for estimating sound speed and the void fraction of bubbles from sub bottom sonar images of gassy seabeds
... the void fraction and extent of the bubble layers (in terms of its penetration depth into the seabed and its horizontal extent in the profile) using that ...bubble void fraction between those ...
30
Measurements of void fraction distribution in cavitating pipe flow using x-ray CT
... the void fraction distribution is still one of the greatest challenges in cavitation ...quantitative void fraction characterization in a cavitating pipe flow is ...time-averaged void ...
12
Experimental study and modelling of average void fraction of gas liquid two phase flow in a helically coiled rectangular channel
... the void fraction, which closely related with flow regimes during condensation with R134a inside smooth ...the void fraction of air-water two-phase flow in a circular tube at different ...
72
Evaluation of EIT systems and algorithms for handling full void fraction range in two-phase flow measurement
... air void fraction dropped down to ...air void fraction was recorded by the EIT ...air void fraction during whole ...air void fraction through entire void ...
15
Simulation of Void Fraction Profile Evolution in Subcooled Nucleate Boiling in a Vertical Annulus with a Bubble-Tracking Model
... Experiments on subcooled nucleate boiling at atmospheric pressure were performed at Purdue University (USA) by Bartel [1]. The experiments were carried out in a vertical annulus with a heated inner rod. The diameter of ...
9
A Study of Flow and Mixing in Bubbly Gas-Liquid Pipe Flow Generated by a Grid
... Many researchers have studied the effects of bubbles on the turbulence in bubbly two- phase flows. Akimi Serizawa et al. [1] developed an electronic instrument for determining various important local para- meters in a ...
16
Water temperature effect on upward air-water flow in a vertical pipe: Local measurements database using four-sensor conductivity probes and LDA
... high void fraction near the wall and a ‘valley’ at the channel center with smaller void fraction; and core peak, for which a peak appears around the center of the channel ...The void ...
12
Development of Multiphase Computational Fluid Dynamics Solver in OpenFOAM.
... For this experiment we have Star-CCM + data so it is necessary to give the Star-CCM + setup that was used to obtain that data. However, the Star-CCM + setup does not very significantly to the one employed in our solver ...
168
Experimental Study of Two-Phase Flow in a Horizontal Circular Channel: Influence of Gas Injection on the Bubble Diameters
... Bubble sizes are around 5 to 10 mm at the outlet of the injection, as the flow rate increases the bubble diameters gets larger and reaches 60 mm in diameter. These values observed especially in the first measurement ...
5
Design, Characterization and In-vitro Evaluation of Superporous Hydrogel Tablets of Nimodipine
... Dimensional volume of the hydrogel / Total volume of pores The void fraction inside superporous hydrogels was determined by immersing the hydrogels in HCl solution (pH 1.2) up to equilibrium swelling. The ...
10
Measurement of local two phase flow parameters of nanofluids using conductivity double sensor probe
... the void fraction distribution is approximately ...of void fractions in the nanofluid becomes smaller than that of pure water as the sensor approaches the ...the void fraction distribu- ...
8
Applications of Artificial Neural Network (ANN) method for performance prediction of the effect of a vertical 90° bend on an air silicone oil flow
... It is worth mentioning that during the course of carrying out the experimental campaign, it was observed that, the structure of churn flow becomes unstable with the fluid travelling up and down in an oscillatory fashion ...
12
Two-Fluid Eulerian-Eulerian CFD Modelling of Bubbly Flows Using an Elliptic-Blending Reynolds Stress Turbulence Model
... lateral void fraction distribution essentially results from a balance between the lift and wall lubrication forces acting on the ...wall-peak void fraction distribution, no general consensus ...
7
Multiphase turbulence in bubbly flows: RANS simulations
... In Figure 10, liquid and air 948 velocities, void fraction, liquid streamwise velocity fluctuations or turbulence kinetic energy 949 and relative velocity radial profiles calculated with[r] ...
68
Effects of Polydispersity in Bubbly Flows
... In figure 5.11, we observe the evolution of the shock reflecting from the plate with ψ = 0.72 and the subsequent cloud cavitation. Behind the shock front, the different-sized nuclei bubbles (in the polydisperse case) ...
150
Measurement of Strands Location and Inter-Strand Contact Resistance in a CIC Conductor
... low void fraction to increase the conductor current den- sity and to prevent the wire movement which causes Tcs ...low void fraction ...
5
Two-phase distribution in the vertical flow line of a domestic wet central heating system
... the void fraction distribution, with a drop in the void fraction starting at a distance of circa ...larger void fractions at lower system velocities resulted in a reduction in the ...
6