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in creator/contributor: "Boman, A."

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RELAP5/MOD3 analysis of a heated channel in downflow

The onset of flow instability (OFI) is a significant phenomenon affecting the determination of a safe operating power limit in the Savannah River Site production reactors. Tests performed at Columbia University for a single tube with uniform axial and azimuthal heating have been analyzed with RELAP5/NPR, Version 0, a version of RELAP5/MOD3. The tests include water flow rates from 3.2 {times} l0{sup {minus}4} - 2.l {times} 10{sup {minus}3} m{sup 3}/s (5 - 33 gpm), Reynolds numbers from 30,000 - … more

Date: May 1, 1993

Creator: Dimenna, R. A.; Qureshi, Z. H. & Boman, A. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Development of 0.5-5 W, 10K Reverse Brayton Cycle Cryocoolers - Phase II Final Report

Miniature cryocoolers for the 8-30 K range are needed to provide 0.5-5 w of cooling to high sensitivity detectors (for long-wave-length IR, magnetism, mm-wave, X-ray, dark matter, and possibly y-ray detection) while maintaining low mass, ultra-low vibration, and good efficiency. This project presents a new approach to eliminating the problems normally encountered in efforts to build low-vibration, fieldable, miniature cryocoolers. Using the reverse Brayton Cycle (RBC), the approach applies and … more

Date: October 15, 2001

Creator: Doty, F. D.; Boman, A.; Arnold, S.; Spitzmesser, J. B.; Jones, D.; McCree, D. et al.

Item Type: Report