Journal of Heat Transfer: Recent submissions
Now showing items 241-260 of 3611
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Improved Wake Velocity Distribution Behind a Rising Bubble for Isothermal and Thermally Stratified Liquid Layers
(The American Society of Mechanical Engineers (ASME), 2022)This paper aims at (a) improving the vertical velocity distribution in the wake of a rising isolated bubble for isothermal water layers and (b) evaluating the proposed distribution for thermally stratified therminol layers ... -
Comparative Assessment of Different Turbulence Models to Estimate Thermo-Fluid Characteristics of an Infrared Suppression (IRS) Device
(The American Society of Mechanical Engineers (ASME), 2022)The accurate computation to predict the heat transfer and flow characteristics in an IRS system is challenging because of the complex designs of thermo-fluid dynamics, such as the entrainment of cold atmospheric air and ... -
Horizontal Chimney Effect
(The American Society of Mechanical Engineers (ASME), 2022)An analysis of natural convection in horizontal slots has been carried out. It is demonstrated that a proper combination of heating and groove patterns can create a net horizontal fluid movement, which we refer to as the ... -
Two Parallel Plates Microreactor for Ethylene Oxide
(The American Society of Mechanical Engineers (ASME), 2022)Ethylene oxide production inside a coated wall microreactor is simulated using computational fluid dynamics. This work considers two parallel plates microreactor filled with different cross-sectional shapes network spacers. ... -
Heat Transfer and Pressure Drop in Single-Phase Flows in Tapered Microchannels
(The American Society of Mechanical Engineers (ASME), 2022)This paper presents a comparison of heat transfer and pressure drop during single-phase flows inside diverging, converging, and uniform microgaps using distilled water as the working fluid. The microgaps were created with ... -
Parameter Optimization and Experimental Study on Effect of Rounding Off Edge Radius on Heat and Mass Transfer Between Gas Layers and Thermal Performance of Vortex Tube
(The American Society of Mechanical Engineers (ASME), 2022)Since 1933, the vortex tube (VT) has been used as a device for cooling, heating, and creating separation process (particles, hydrocarbons, energy, etc.). The VT efficiency is very relevant to the characteristics of the ... -
Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow
(The American Society of Mechanical Engineers (ASME), 2022)This study investigates the unsteady, two-dimensional flow and heat transfer past a rotationally oscillating circular cylinder in linear shear flow. A higher order compact (HOC) finite difference scheme is used to solve ... -
Rarefaction Effect, Heat Transfer, and Drag Coefficient for Gas Flow Around Square Cylinder in Transition Flow Regime
(The American Society of Mechanical Engineers (ASME), 2022)In this work, rarefaction effect, heat transfer, and drag coefficient for gas flow around a square cylinder in transition flow regime are numerically studied using unified gas kinetic scheme (UGKS). To reduce computational ... -
MTPS Analytical Temperature and Heat Flux Solution With Thermal Contact Resistance
(The American Society of Mechanical Engineers (ASME), 2022)An exact transient analytical solution of the temperature fields and heat fluxes for the modified transient plane source (MTPS) method is presented. The MTPS sensor is made of a thin disk with a heater/sensor and a heated ... -
Medium-Scale Methanol Pool Fire Model Validation
(The American Society of Mechanical Engineers (ASME), 2022)Medium scale (30 cm diameter) methanol pool fires were simulated using the latest fire modeling suite implemented in Sierra/Fuego, a low Mach number multiphysics reacting flow code. The sensitivity of model outputs to ... -
A General Model for the Longevity of Super-Hydrophobic Surfaces in Under-Saturated, Stationary Liquid
(The American Society of Mechanical Engineers (ASME), 2022)We perform a numerical study of the longevity of a super-hydrophobic surface (SHS) in under-saturated, stationary liquid. We numerically solve the spatial-temporal evolution of the gas concentration in the liquid, the ... -
The Influence of Geometrical and Inlet Parameters on the Impingement Cooling of Aviation Kerosene
(The American Society of Mechanical Engineers (ASME), 2022)In the present paper, numerical study of flow and heat transfer properties of RP-3 kerosene in an impingement model are conducted with SST k−ω turbulence model and a 10-species surrogate of kerosene. The independence of ... -
Generalized Nusselt Number Correlation for Binary Hybrid Nano-Oils as Heat Transfer Fluid in Solar Thermal Systems
(The American Society of Mechanical Engineers (ASME), 2022)The turbulent flow of binary hybrid nano-oils is investigated and Nusselt number correlation is developed for futuristic concentrated solar thermal application. Available Nusselt number correlations for water-based hybrid ... -
Weakly Nonlinear Stability of Thermosolutal Convection in an Oldroyd-B Fluid-Saturated Anisotropic Porous Layer Using a Local Thermal Nonequilibrium Model
(The American Society of Mechanical Engineers (ASME), 2022)The two-temperature model of local thermal nonequilibrium (LTNE) is utilized to investigate a weakly nonlinear stability of thermosolutal convection in an Oldroyd-B fluid-saturated anisotropic porous layer. The anisotropies ... -
Optimized Phonon Band Discretization Scheme for Efficiently Solving the Nongray Boltzmann Transport Equation
(The American Society of Mechanical Engineers (ASME), 2022)The phonon Boltzmann transport equation (BTE) is an important tool for studying the nanoscale thermal transport. Because phonons have a large spread in their properties, the nongray (i.e., considering different phonon ... -
Heat Transfer Enhancement of Ionic Wind Assisted Slot Jet Reattachment Nozzle: A Numerical Study
(The American Society of Mechanical Engineers (ASME), 2022)Impinging jet nozzles are omnipresent in industrial applications. Innovative impinging jet nozzles, such as radial jet reattachment (RJR) and slot jet reattachment (SJR) nozzles, have been proven to be highly efficient ... -
A Compact WSGG Formulation to Account for Inhomogeneity of H2O–CO2 Mixtures in Combustion Systems
(The American Society of Mechanical Engineers (ASME), 2022)An alternative weighted-sum-of-gray-gases (WSGG) model is proposed with a single set of constant pressure-based absorption coefficients that accounts for different mole fraction ratios (MRs) of H2O–CO2. The method requires ... -
The Nonlinear Diffusion Model of Recrystallization
(The American Society of Mechanical Engineers (ASME), 2022)The diffusion equation with a jump change in diffusion coefficient depending on the diffusant concentration is considered. The phase transition problem with moving boundary to describe the features of activated recrystallization ... -
Network Analogy for Convecting Walls of an Enclosure
(The American Society of Mechanical Engineers (ASME), 2022)The classical thermal network analogy is extended to plates bounded by two distinct states of convection, such as the walls of an enclosure. The full network is derived from an effective network representation, expressed ... -
Heat and Mass Transfer Correlations for Staggered Nanoporous Membrane Tubes in Flue Gas Crossflow
(The American Society of Mechanical Engineers (ASME), 2022)The use of transport membrane condenser (TMC) technology to recover heat and mass from the flue gas has been increasing recently. The heat and mass transfer from the TMC tube bundle have been studied experimentally and ...