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RISOn the Development of Correlations for Bubble Liftoff Parameters During Subcooled Nucleate Flow Boiling Using Nonintrusive Dynamic Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate prediction of bubble dynamic parameters is essential to improve boiling heat transfer models. Considering the complexities and challenges associated with performing a large number of boiling experiments, researchers ...
Coupled Wall Boiling and Population Balance Model for High Void Fraction Flows Under Sub-Cooled Nucleate Boiling Regime: Model Development and Validation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The subcooled flow boiling of water in a vertical annulus channel is studied numerically at low-pressure conditions. The two-fluid model is developed with flow-regime dependent interfacial transfers for mass, momentum, and ...
Comparison of Local Heat Transfer Distribution in Between Three-Dimensional Inclined Closed and Open Cavities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The phenomenon of natural convection is investigated in three-dimensional (3D) cavities with four adiabatic walls and one hot wall. The surface opposite to the hot wall is either a wall (closed cavity) at a lower constant ...
Whole Field Measurements to Understand the Role of Varying Depths of Nucleation Site on Vapor Bubble Dynamics and Heat Transfer Rates
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work studies the possible effects of varying depths of cavity on bubbling features and the associated heat transfer rates in nucleate pool boiling regime. A single vapor bubble has been generated on a substrate with ...
Characterization of Pulsating Submerged Jet—A Particle Image Velocimetry Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental investigation has been performed to determine the flow characteristics of an axisymmetric submerged water jet with superimposed periodically oscillating flow. The objective of the study is to quantify in ...
Real-Time Observations of Density Anomaly Driven Convection and Front Instability During Solidification of Water
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Natural convection during solidification of liquids is known to impact the freezing characteristics and also lead to defect formation. In this study, we report the findings of real-time interferometric observation of ...
Experiments on the Identification of the Onset of Buoyancy-Driven Convection in High Aspect Ratio Top Open Cavities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental analysis of the onset of buoyancy-driven convection in a top facing high aspect ratio cavity is reported. Bottom surface of the cavity is heated, with its two vertical side walls being insulated. Thermal field ...
A Comprehensive Model for Single Bubble Nucleate Flow Boiling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The single bubble dynamics and local thermal effects in a rectangular channel are investigated in this paper under subcooled nucleate flow boiling conditions. A combined effect of Marangoni and microlayer evaporation in ...
Simultaneous Mapping of Bubbling Regimes and Thermal Layer During Direct Contact Condensation of Steam Using Gradients-Based Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Direct contact condensation experiments of steam in subcooled water are carried out for subcooling levels of ΔTsub= 20 °C, 30 °C, and 40 °C with a steam injection mass flux of 20 kg/m2 s. Rainbow schlieren deflectometry ...