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RISA Conceptual Model for Entrainment in Cumulus Clouds
Publisher: American Meteorological Society
Abstract: Cumulus clouds are generally modeled as a plume, and the model works well up until the cloud base is encountered, beyond which the continuously entraining model does not appear appropriate. Although it has been known for ...
Analysis of Burnett Stresses and Entropy Generation for Pressure-Driven Plane Poiseuille Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we undertake an analytical study of stresses (augmented and Onsager–Burnett) and entropy generation for the plane Poiseuille flow problem, and their variation with Knudsen number. The gas flow is assumed to ...
Grad's Second Problem and Its Solution Within the Framework of Burnett Hydrodynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In his seminal work, Grad not only derived 13 moment equations but also suggested two problems to check his derived equations. These problems are highly instructive as they bring out the character of the equations by ...
Significance of Upstream Wall Conditions in Characterizing the Heat Transfer Phenomena of Rarefied Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Slip flows in small-scale flow networks involve simultaneous presence of multiple factors governing the flow field. In addition, conditions of upstream wall need to be clearly defined for quantifying the total heat that ...
Evaluation of Grad's Second Problem Using Different Higher Order Continuum Theories
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In our earlier work (Jadhav, and Agrawal, 2020, “Grad's second problem and its solution within the framework of Burnett hydrodynamics,” ASME J. Heat Transfer, 142(10), p. 102105), we proposed Grad's second problem (examination ...
Revisiting the Lattice Boltzmann Method Through a Nonequilibrium Thermodynamics Perspective
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, we incorporate a nonequilibrium thermodynamics perspective that is consistent with the Onsager reciprocity principle into the lattice Boltzmann framework to propose a novel regularized lattice Boltzmann ...
Investigations on Bluff Bodies as Improved Vortex Shedders Placed Inside a Circular Pipe
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the present study, we visualize the turbulent wake of various bluff bodies placed inside a circular pipe. The objective is to identify shapes which are strong vortex generators and incur minimum irrecoverable pressure ...
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 ...
OBurnett Equations: Thermodynamically Consistent Continuum Theory Beyond the Navier–Stokes Regime
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rarefied gas flows are highly nonequilibrium flows whose flow physics cannot be discerned accurately within the framework of the Navier–Stokes equations. The Burnett equations and the Grad moment equations, which form a ...
Laminar Vortex Shedding in the Wake of a Cube
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow around a cube is numerically studied in the laminar vortex shedding regime. The objective is to examine the three-dimensional vortex shedding mechanism and understand the temporal behavior of the wake. Vortices were ...