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RISPressure Drop Oscillations With Symmetry Breakdown in Two-Phase Flow Parallel Channels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-phase flow in parallel heated channels is prone to symmetry breakdown resulting in mass flow maldistribution. Moreover, in the presence of compressible volume (CV), such systems also undergo pressure drop oscillations ...
Orthogonal Eigenfunction Expansion Method for One-Dimensional Dual-Phase Lag Heat Conduction Problem With Time-Dependent Boundary Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The separation of variables (SOV) can be used for all Fourier, single-phase lag (SPL), and dual-phase lag (DPL) heat conduction problems with time-independent source and/or boundary conditions (BCs). The Laplace transform ...
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 ...
The Validity of Approximate Boundary Conditions for Natural Convection With Thermal Radiation in Open Cavities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The use of approximate boundary conditions at the opening of the cavities leads to restriction of the computational domain and, hence, the reduction in computational effort. However, the accuracy of the restricted domain ...
Rayleigh–Bénard Convection With Multiple Solutions in Trapezoidal Closed Cavities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rayleigh–Bénard convection (RBC) in symmetric trapezoidal closed cavities with cavity angle ϕ=70°−110°, filled with air, is studied using numerical simulations where inclined side walls are adiabatic. In contrast to ...
Analytical Solution for Three Dimensional, Unsteady Heat Conduction in a Multilayer Sphere
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An analytical solution has been obtained for the transient problem of threedimensional multilayer heat conduction in a sphere with layers in the radial direction. The solution procedure can be applied to a hollow sphere ...
A Closed Form Solution of Dual-Phase Lag Heat Conduction Problem With Time Periodic Boundary Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Laplace transform (LT) is a widely used methodology for analytical solutions of dual phase lag (DPL) heat conduction problems with consistent DPL boundary conditions (BCs). However, the inversion of LT requires a series ...
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 ...
Identification of the Onset of Bifurcations in a Trapezoidal Cavity Receiver Open at the Top
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Stability analysis of buoyancy-driven convective flow in the trapezoidal cavities is essential for efficient heat transfer in solar evaporators. In the present analysis, the symmetry breakdown pitchfork and Hopf bifurcations' ...
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 ...