scholarly journals Geometry-dependent modal field properties of metal-rod-array-based terahertz waveguides

OSA Continuum ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 655 ◽  
Author(s):  
Dejun Liu ◽  
Ja-Yu Lu ◽  
Borwen You ◽  
Toshiaki Hattori
Keyword(s):  
Terahertz Waveguides ◽  
Modal Field ◽  
Rod Array

Turbulent Heat and Momentum Transports in an Infinite Rod Array

1987 ◽  
Vol 109 (3) ◽  
pp. 599-605 ◽  
Author(s):  
An-Shik Yang ◽  
Ching-Chang Chieng
Keyword(s):  
Heat Transfer ◽  
Friction Factor ◽  
Equation Model ◽  
Temperature Fields ◽  
Turbulent Heat ◽  
Fluid Temperature ◽  
Transfer Coefficients ◽  
Anisotropic Factor ◽  
Flow Through ◽  
Rod Array

An anisotropic factor is carefully selected from eleven distributions and adopted to the k–ε two-equation model of turbulence to obtain detailed velocity and temperature fields for steady-state, fully developed turbulent flow through infinite triangular/square rod array. The present study covers the ranges of pitch-to-diameter ratio from 1.123 to 1.5, and Reynolds number from 2.4 × 104 to 106. Velocity and wall shear stress are calculated and compared to experimental data. Normalized fluid temperature, friction factor, and heat transfer coefficient are also computed. The correlations of friction factor and heat transfer coefficients for flow inside circular pipe and flow through finite rod arrays are compared with the results for flow through infinite rod arrays.

A Circular Plane-Mirror Laser Interferometer Containing an Angular-Limiting Device

1973 ◽  
Vol 51 (19) ◽  
pp. 2114-2117
Author(s):  
K. O. Hill ◽  
C. K. Campbell
Keyword(s):  
Integral Equation ◽  
Steady State ◽  
Laser Interferometer ◽  
Plane Mirror ◽  
Field Distributions ◽  
Modal Field ◽  
Circular Plane

The integral equation is derived for the steady-state modal-field distributions in a circular plane-mirror laser interferometer containing a symmetrically positioned angular-limiting device. It is shown that this equation reduces to the corresponding Fox and Li formulation in the limit when the aperture is fully opened.

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