0
TECHNICAL PAPERS

Attainment of Flowrate Uniformity in the Channels That Link a Distribution Manifold to a Collection Manifold

[+] Author and Article Information
Jimmy C. K. Tong, Ephraim M. Sparrow

Laboratory for Heat Transfer and Fluid Flow Practice, Department of Mechanical Engineering,  University of Minnesota, Minneapolis, MN 55455

John P. Abraham

Laboratory for Heat Transfer and Fluid Flow Practice, School of Engineering, University of St. Thomas, St. Paul, MN 55105

J. Fluids Eng 129(9), 1186-1192 (Mar 28, 2007) (7 pages) doi:10.1115/1.2754319 History: Received June 13, 2006; Revised March 28, 2007

A logic-based systematic method of designing manifold systems to achieve flowrate uniformity among the channels that interconnect a distribution manifold and a collection manifold has been developed, implemented, and illustrated by case studies. The method is based on tailoring the flow resistance of the individual channels to achieve equal pressure drops for all the channels. The tailoring of the flow resistance is accomplished by the use of gate-valve-like obstructions. The adjustment of the valve-like obstructions is determined here by means of numerical simulations. Although the method is iterative, it may converge in one cycle of the iterations. Progress toward the goal of per channel uniformity can be accelerated by tuning a multiplicative constant. The only departure of the method from being fully automatic is the selection of the aforementioned multiplicative constant. The method is described in detail in a step-by-step manner. These steps are illustrated both generically and specifically for four case studies. As an example, in one of the case studies, an original flow imbalance of over 100% in an untailored manifold system was reduced to a flow imbalance of less than 10% in one cycle of the method.

FIGURES IN THIS ARTICLE
<>
Copyright © 2007 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

A schematic diagram of a generic manifold system

Grahic Jump Location
Figure 2

A schematic diagram showing simulated valves at the exits of the interconnecting channels

Grahic Jump Location
Figure 3

The physical model of a typical channel

Grahic Jump Location
Figure 4

Generic presentation of pressure drops of the simulated valves for the individual channels having a common per channel flowrate

Grahic Jump Location
Figure 5

Generic presentation of pressure drops of the simulated valves (curves) and the relative per channel pressure drops (horizontal straight lines)

Grahic Jump Location
Figure 6

Discretization of the solution domain in the neighborhood of a valve: (a) coarse mesh; and (b) fine mesh

Grahic Jump Location
Figure 7

Generic presentation of the method of obtaining Δpvalve

Grahic Jump Location
Figure 8

Valve-related pressure drops (curves) and relative per channel pressure drops (horizontal straight lines) for Case Study 1

Grahic Jump Location
Figure 9

Pattern of fluid flow in the neighborhood of a valve at the exit of a channel

Grahic Jump Location
Figure 10

Pattern of fluid flow in the neighborhood of the inlet of a channel

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In