Results 31 to 40 of about 17,567 (301)

Geometrically Non-Linear Vibration of a Cantilever Interacting with Rarefied Gas Flow

open access: yesCybernetics and Information Technologies, 2020
The work is devoted to study 2D pressure driven rarefied gas flow in a microchannel having an elastic obstacle. The elastic obstacle is clamped at the bottom channel wall and its length is half of the channel height.
Shterev Kiril, Manoach Emil
doaj   +1 more source

Features of calculation and modeling of flow of rotors and pucher propellers for aerial vehicle in the condition of very rarefied atmosphere

open access: yesАвіаційно-космічна техніка та технологія, 2022
This article presents the structure of designing and modeling the flow of rotors and pusher propellers in a highly rarefied atmosphere. The aerodynamic characteristics of an airfoil are key factors in determining design accuracy and performance ...
Mykola Kulyk   +4 more
doaj   +1 more source

Multiscale lattice Boltzmann approach to modeling gas flows [PDF]

open access: yes, 2010
For multiscale gas flows, kinetic-continuum hybrid method is usually used to balance the computational accuracy and efficiency. However, the kinetic-continuum coupling is not straightforward since the coupled methods are based on different theoretical ...
E. F. TORO   +6 more
core   +2 more sources

A thermal lattice Boltzmann model for micro/nano-flows [PDF]

open access: yes, 2008
The dynamic behavior of charged micro and nanofluids plays a crucial role in a large variety of industrial and biological processes. Such dynamic behavior is characterized by the simultaneous occurrence of several competing mechanisms, such as ...
Barber, Robert W.   +3 more
core   +2 more sources

Apparent permeability in tight gas reservoirs combining rarefied gas flow in a microtube

open access: yesFrontiers in Earth Science, 2023
In tight gas reservoirs, the major flow channels are composed of micro/nanopores in which the rarefaction effect is prominent and the traditional Darcy law is not appropriate for gas flow.
Lingli Zheng   +5 more
doaj   +1 more source

Lattice Boltzmann Model for Rarefied Gaseous Mixture Flows in Three-Dimensional Porous Media Including Knudsen Diffusion

open access: yesFluids
Numerical modeling of gas flows in rarefied regimes is crucial in understanding fluid behavior in microscale applications. Rarefied regimes are characterized by a decrease in molecular collisions, and they lead to unusual phenomena such as gas phase ...
Michel Ho   +5 more
doaj   +1 more source

Evaporation Boundary Conditions for the Linear R13 Equations Based on the Onsager Theory

open access: yesEntropy, 2018
Due to the failure of the continuum hypothesis for higher Knudsen numbers, rarefied gases and microflows of gases are particularly difficult to model.
Alexander Felix Beckmann   +3 more
doaj   +1 more source

EFFECT OF VISCOUS HEAT GENERATION ON TEMPERATURE OF RAREFIED GAS MICROFLOWS DRIVEN BY MOVING SURFACE [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
Good understanding of the gas flow under rarefied conditions is important for designing the micro-electro-mechanical systems. The Navier-Stokes-Fourier equations with the slip and jump conditions can capture the rarefied gas flows in the slip regime.
NAM T. P. LE, THOAI N. TRAN
doaj  

Rarefied Poiseuille Flow in a Circular Tube [PDF]

open access: yesEPJ Web of Conferences, 2019
An isothermal rarefied gas flow through a long circular tube due to longitudinal pressure gradient (a three-dimensional Poiseuille problem) was studied using the linearized Bhatnagar-Gross-Krook model kinetic equation over the whole range of the Knudsen ...
Germider Oksana, Popov Vasily
doaj   +1 more source

Comparing macroscopic continuum models for rarefied gas dynamics : a new test method [PDF]

open access: yes, 2006
We propose a new test method for investigating which macroscopic continuum models, among the many existing models, give the best description of rarefied gas flows over a range of Knudsen numbers.
Reese, Jason   +2 more
core   +1 more source

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