Heat and mass transfer of oscillatory lid-driven cavity flow in the continuum, transition and free molecular flow regimes

Wang, Peng; Wu, Lei; Zhu, Li-Guo; Zhang, Yonghao

doi:10.1016/j.ijheatmasstransfer.2018.11.060

Cited by 20 publications

(10 citation statements)

References 42 publications

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“…It is noted that although pressure/force driven oscillatory rarefied gas flows have received very little attention, the corresponding shear-driven flows have attracted considerable attention. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] Rarefied oscillatory flows due to moving boundaries are present in resonating filters, sensors, actuators, and signal processing, 36,37 where the computation of the damping forces is crucial in order to control and optimize the resolution and sensitivity of the signal. Simulations have been based on linearized 24,25 and nonlinear 26,[30][31][32]34,35,37 kinetic models, as well as on the Direct Simulation Monte Carlo (DSMC) method.…”

Section: Articlementioning

confidence: 99%

“…[21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] Rarefied oscillatory flows due to moving boundaries are present in resonating filters, sensors, actuators, and signal processing, 36,37 where the computation of the damping forces is crucial in order to control and optimize the resolution and sensitivity of the signal. Simulations have been based on linearized 24,25 and nonlinear 26,[30][31][32]34,35,37 kinetic models, as well as on the Direct Simulation Monte Carlo (DSMC) method. [21][22][23][27][28][29]33,36 It is also noted that steady-state force driven Poiseuille type flows have been investigated [38][39][40][41][42][43] based on kinetic theory and modeling, clarifying certain phenomena and paradox appearing near the continuum regime that cannot be described by the typical hydrodynamic approach.…”

Section: Articlementioning

confidence: 99%

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Nonlinear oscillatory fully-developed rarefied gas flow in plane geometry

et al. 2019

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Section: Articlementioning

confidence: 99%

Section: Articlementioning

confidence: 99%

Nonlinear oscillatory fully-developed rarefied gas flow in plane geometry

et al. 2019

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“…Further study on the effects of oscillation on heat transfer in a 2D square cavity was conducted [79]. It was found that the thermal convection could be dramatically enhanced under oscillation conditions even at moderate Knudsen numbers, which played a dominant role in the heat transfer.…”

Section: Flows In Devices With Moving Partsmentioning

confidence: 99%

Progress of discrete unified gas-kinetic scheme for multiscale flows

Guo

2021

Adv. Aerodyn.

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Multiscale gas flows appear in many fields and have received particular attention in recent years. It is challenging to model and simulate such processes due to the large span of temporal and spatial scales. The discrete unified gas kinetic scheme (DUGKS) is a recently developed numerical approach for simulating multiscale flows based on kinetic models. The finite-volume DUGKS differs from the classical kinetic methods in the modeling of gas evolution and the reconstruction of interface flux. Particularly, the distribution function at a cell interface is reconstructed from the characteristic solution of the kinetic equation in space and time, such that the particle transport and collision effects are coupled, accumulated, and evaluated in a numerical time step scale. Consequently, the cell size and time step of DUGKS are not passively limited by the particle mean-free-path and relaxation time. As a result, the DUGKS can capture the flow behaviors in all regimes without resolving the kinetic scale. Particularly, with the variation of the ratio between numerical mesh size scale and kinetic mean free path scale, the DUGKS can serve as a self-adaptive multiscale method. The DUGKS has been successfully applied to a number of flow problems with multiple flow regimes. This paper presents a brief review of the progress of this method.

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“…Wubshet and Mohammed [3] employed finite element method to simulate the flow dynamics in a trapezoidal cavity which exposed to non-uniform temperature at its lower base. Wang et al [4] computed the lid-driven cavity with fin of porous surface exposed to mixed convection. Their study revealed that the transfer of heat in the cavity was greatly affected by the velocity of the lid and the oscillating frequency.…”

Section: Introductionmentioning

confidence: 99%

Mixed convection of Casson fluid in a differentially heated bottom wavy wall

Hirpho

2021

Heliyon

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Numerical simulations of mixed convection of Casson fluid with a heated bottom wavy wall in a trapezoidal enclosure are performed. The enclosure's left and right sidewalls are assumed to be cold temperatures, while the enclosure's bottom and top walls are kept at hot temperatures and thermally insulated, respectively. The top wall is supposed to slide at a constant speed U 0 from left to right. After transforming the governing equations into a non-dimensional form, the finite element method is employed to solve them and modeled with Comsol-Multiphysics. The effect of non-dimensional parameters such as the Richardson number ðRi ¼ 0:1; 1; 10Þ, Casson fluid parameters ðϕ ¼ 0:1;0:5;1Þ, and the number of oscillations ðN ¼ 0; 1; 2; 3Þ on flow and thermal fields, as well as the heat transfer rate has been studied. Furthermore, the results for the Average Nusselt number over the heated bottom wavy wall under the influence of the Rayleigh number and Casson parameter are depicted. The results showed that as the Richardson number increases, so does the average Nusselt number for all Casson fluid parameter values.

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Heat and mass transfer of oscillatory lid-driven cavity flow in the continuum, transition and free molecular flow regimes

Cited by 20 publications

References 42 publications

Nonlinear oscillatory fully-developed rarefied gas flow in plane geometry

Nonlinear oscillatory fully-developed rarefied gas flow in plane geometry

Progress of discrete unified gas-kinetic scheme for multiscale flows

Mixed convection of Casson fluid in a differentially heated bottom wavy wall

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