The Effect of CARRC Model Spacing on the Characteristics of Slit Flow

2020 ◽  
Vol 08 (04) ◽  
pp. 71-79
Author(s):  
玉凡 莫
Keyword(s):  
Slit Flow

Nearly free-molecular slit flow at finite pressure and temperature ratios

1971 ◽  
Vol 50 (3) ◽  
pp. 565-577 ◽  
Author(s):  
P. Y. Wang ◽  
E. Y. Yu
Keyword(s):  
Mass Flow ◽  
Total Mass ◽  
Noble Gas ◽  
Order Correction ◽  
Linear Boltzmann Equation ◽  
Molecular Flow ◽  
First Order ◽  
Slit Flow ◽  
Isothermal Case ◽  
First Order Correction

An analytical study is made of nearly free-molecular flow of a noble gas from one reservoir to another through a two-dimensional slit, with finite pressure and temperature ratios across the slit. The fundamental solution of the linear Boltzmann equation is employed in the study. The total mass flow is calculated to the first-order correction terms, of the order of α ln α and α, where α is the inverse Knudsen number. The coefficients of these terms are in general multiple integrals, but they become explicit functions of the pressure and temperature ratios after the multiple integrations are carried out by using Krook collision model. When the general result is simplified to the isothermal case the first-order correction has a negative value, indicating the reduction of the total mass flow due to intermolecular collisions in the counter flows.

scholarly journals Molecular Orientation Structure of Liquid Crystals in the Slit-Flow Viscometer

2004 ◽  
Vol 32 (2) ◽  
pp. 71-78 ◽  
Author(s):  
Ming-Hung Wu ◽  
Ken'ichi Koseki ◽  
Takeshi Amari
Keyword(s):  
Liquid Crystals ◽  
Molecular Orientation ◽  
Slit Flow ◽  
Orientation Structure ◽  
Structure Of Liquid

Solitary stokes waves in heavy-fluid slit flow

1992 ◽  
Vol 26 (6) ◽  
pp. 935-937
Author(s):  
�. L. Amromin ◽  
V. A. Bushkovskii ◽  
D. Yu. Sadovnikov
Keyword(s):  
Heavy Fluid ◽  
Slit Flow ◽  
Stokes Waves

scholarly journals Experimental Investigation of Compact Evaporators for Ultralow Temperature Refrigeration of Microprocessors

2007 ◽  
Vol 129 (3) ◽  
pp. 291-299 ◽  
Author(s):  
Robert Wadell ◽  
Yogendra K. Joshi ◽  
Andrei G. Fedorov
Keyword(s):  
High Heat ◽  
Heat Fluxes ◽  
Junction Temperature ◽  
High Heat Flux ◽  
Base Line ◽  
Vapor Compression ◽  
Pin Fin ◽  
Slit Flow ◽  
Strong Motivation ◽  
Pin Fin Array

Microprocessor performance can be significantly improved by lowering the junction temperature, especially down to the deep subambient levels. This provides the strong motivation for the current study, which focuses on the design and thermohydraulic performance evaluation of high heat flux evaporators suitable for interfacing the microprocessor chip with a cascaded R134a∕R508b vapor compression refrigeration system at −80°C. Four compact evaporator designs are examined—a base line slit-flow structure with no microfeatures, straight microchannels, an inline pin fin array, and an alternating pin fin array—all fitting the same size envelope. Pressure drop and heat transfer measurements are reported and discussed to explain the performance of the various evaporator geometries for heat fluxes ranging between 20W∕cm2 and 100W∕cm2.

scholarly journals Research on Low Noise Pressure Reducing Structure using Radial Slit Flow

2004 ◽  
Vol 35 (5) ◽  
pp. 77-83 ◽  
Author(s):  
Chongho YOUN ◽  
Shintaro INOUE ◽  
Kenji KAWASHIM ◽  
Toshiharu KAGAWA
Keyword(s):  
Low Noise ◽  
Slit Flow

scholarly journals Resistance force pulsations of annular flow in the Couette-Taylor system with counter-rotating cylinders

2019 ◽  
Vol 196 ◽  
pp. 00045
Author(s):  
Nikolay Miskiv ◽  
Anatoly Serov ◽  
Aleksandr Nazarov ◽  
Valery Mamonov
Keyword(s):  
Reynolds Numbers ◽  
Mean Value ◽  
Working Fluid ◽  
Resistance Force ◽  
Taylor Vortices ◽  
Slit Flow ◽  
Ring Channel ◽  
Resistance Moment ◽  
Tension Sensor ◽  
Rotation Resistance

The paper presents the results of an experimental study of the Couette-Taylor flow fluctuations in a ring channel with oppositely rotating multicylinder rotors. Experiments were carried out using water-glycerine solutions as a working fluid. The rotation resistance moment and its pulsations were investigated, using the system for measuring the torque resistance of rotation of rotors, made in the form of a digital dynamometer based on a tension sensor. The investigations made it possible to establish that the classic dependence of the appearance of Taylor vortices is observed in the slit flow of a multicylinder system rotating oppositely. It was shown that in the range of Reynolds numbers Re = (100 – 500), pulsations of dissipative processes with variable frequency and amplitude up to 10% of the mean value of rotation resistance are observed.

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