A general methodology and applications for conduction-like flow-channel design.

Cummings, Eric B. ; Fiechtner, Gregory J.

Sandia National Laboratories

关键词: Flow Measurement.;    Transport Theory-Mathematical Models.;    Electrostatics.;    Lagrangian Function;    Fluid Flow;   

DOI  :  10.2172/921605
RP-ID  :  SAND2004-8032
RP-ID  :  AC04-94AL85000
RP-ID  :  921605

美国|英语

来源: UNT Digital Library

【 摘 要 】

A novel design methodology is developed for creating conduction devices in which fields are piecewise uniform. This methodology allows the normally analytically intractable problem of Lagrangian transport to be solved using algebraic and trigonometric equations. Low-dispersion turns, manifolds, and expansions are developed. In this methodology, regions of piece-wise constant specific permeability (permeability per unit width) border each other with straight, generally tilted interfaces. The fields within each region are made uniform by satisfying a simple compatibility relation between the tilt angle and ratio of specific permeability of adjacent regions. This methodology has particular promise in the rational design of quasi-planar devices, in which the specific permeability is proportional to the depth of the channel. For such devices, the methodology can be implemented by connecting channel facets having two or more depths, fabricated, e.g., using a simple two-etch process.